Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 2.129
Filtrar
1.
Sci Rep ; 14(1): 11079, 2024 05 14.
Artigo em Inglês | MEDLINE | ID: mdl-38745047

RESUMO

N-acetyl glucosamine (NAG) is a natural amino sugar found in various human tissues with previously described anti-inflammatory effects. Various chemical modifications of NAG have been made to promote its biomedical applications. In this study, we synthesized two bi-deoxygenated NAG, BNAG1 and BNAG2 and investigated their anti-inflammatory properties, using an in vivo and in vitro inflammation mouse model induced by lipopolysaccharide (LPS). Among the parent molecule NAG, BNAG1 and BNAG2, BNAG1 showed the highest inhibition against serum levels of IL-6 and TNF α and the leukocyte migration to lungs and peritoneal cavity in LPS challenged mice, as well as IL-6 and TNF α production in LPS-stimulated primary peritoneal macrophages. BNAG2 displayed an anti-inflammatory effect which was comparable to NAG. These findings implied potential application of these novel NAG derivatives, especially BNAG1, in treatment of certain inflammation-related diseases.


Assuntos
Acetilglucosamina , Anti-Inflamatórios , Lipopolissacarídeos , Macrófagos Peritoneais , Fator de Necrose Tumoral alfa , Animais , Acetilglucosamina/farmacologia , Camundongos , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Macrófagos Peritoneais/efeitos dos fármacos , Macrófagos Peritoneais/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Interleucina-6/metabolismo , Interleucina-6/sangue , Inflamação/tratamento farmacológico , Masculino , Modelos Animais de Doenças
2.
Molecules ; 29(9)2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38731476

RESUMO

Although the wide variety of bioactivities of curcumin has been reported by researchers, the clinical application of curcumin is still limited due to its poor aqueous solubility. In view of this, a series of dimethylaminomethyl-substituted curcumin derivatives were designed and synthesized (compounds 1-15). Acetate of these derivatives were prepared (compounds 1a-15a). The Mannich reaction and aldol condensation reaction are the main reactions involved in this study. Compounds 6, 10, 12, 3a, 5a, 6a, 7a, 8a, 10a, 11a, 12a, 13a, 14a, and 15a exhibited better in vitro anti-inflammatory activity compared to curcumin in the RAW264.7 cell line. Compounds 5, 1a, 5a, 8a, and 12a exhibited better in vitro antioxidant activity compared to curcumin in the PC 12 cell line. Compounds 11, 13, 5a, 7a, and 13a exhibited better in vitro radiation protection compared to curcumin in the PC 12 cell line. The aqueous solubilities of all the curcumin derivative acetates were greatly improved compared to curcumin.


Assuntos
Anti-Inflamatórios , Antioxidantes , Curcumina , Protetores contra Radiação , Solubilidade , Curcumina/farmacologia , Curcumina/química , Curcumina/síntese química , Curcumina/análogos & derivados , Animais , Camundongos , Antioxidantes/farmacologia , Antioxidantes/química , Antioxidantes/síntese química , Células RAW 264.7 , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Protetores contra Radiação/farmacologia , Protetores contra Radiação/síntese química , Protetores contra Radiação/química , Desenho de Fármacos , Relação Estrutura-Atividade , Estrutura Molecular , Células PC12 , Ratos , Água/química
3.
J Med Chem ; 67(9): 7385-7405, 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38687956

RESUMO

Anemoside B4 (AB4), a triterpenoidal saponin from Pulsatilla chinensis, shows significant anti-inflammatory activity, and may be used for treating inflammatory bowel disease (IBD). Nevertheless, its application is limited due to its high molecular weight and pronounced water solubility. To discover new effective agents for treating IBD, we synthesized 28 AB4 derivatives and evaluated their cytotoxic and anti-inflammatory activities in vitro. Among them, A3-6 exhibited significantly superior anti-inflammatory activity compared to AB4. It showed a significant improvement in the symptoms of DSS-induced colitis in mice, with a notably lower oral effective dose compared to AB4. Furthermore, we discovered that A3-6 bound with pyruvate carboxylase (PC), then inhibited PC activity, reprogramming macrophage function, and alleviated colitis. These findings indicate that A3-6 is a promising therapeutic candidate for colitis, and PC may be a potential new target for treating colitis.


Assuntos
Anti-Inflamatórios , Colite , Piruvato Carboxilase , Saponinas , Animais , Humanos , Camundongos , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Colite/tratamento farmacológico , Colite/induzido quimicamente , Sulfato de Dextrana , Descoberta de Drogas , Camundongos Endogâmicos C57BL , Piruvato Carboxilase/antagonistas & inibidores , Piruvato Carboxilase/metabolismo , Células RAW 264.7 , Saponinas/farmacologia , Saponinas/química , Saponinas/uso terapêutico , Saponinas/síntese química , Relação Estrutura-Atividade
4.
Eur J Med Chem ; 271: 116427, 2024 May 05.
Artigo em Inglês | MEDLINE | ID: mdl-38657479

RESUMO

Glucocorticoids (GCs) have been used in the treatment of sepsis because of their potent anti-inflammatory effects. However, their clinical efficacy against sepsis remains controversial because of glucocorticoid receptor (GR) downregulation and side effects. Herein, we designed and synthesized 30 ocotillol derivatives and evaluated their anti-inflammatory activities. Ocotillol 24(R/S) differential isomers were stereoselective in their pharmacological action. Specifically, 24(S) derivatives had better anti-inflammatory activity than their corresponding 24(R) derivatives. Compound 20 most effectively inhibited NO release (85.97% reduction), and it exerted dose-dependent inhibitory effects on interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) levels. Mechanistic studies revealed that compound 20 reduces the degradation of GR mRNA and GR protein. Meanwhile, compound 20 inhibited the activation of nuclear factor-κB (NF-κB) signaling, thereby inhibiting the nuclear translocation of p65 and attenuating the inflammatory response. In vivo studies revealed that compound 20 attenuated hepatic, pulmonary, and renal pathology damage in mice with sepsis and suppressed the production of inflammatory mediators. These results indicated that compound 20 is a promising lead compound for designing and developing anti-sepsis drugs.


Assuntos
NF-kappa B , Receptores de Glucocorticoides , Sepse , Transdução de Sinais , Receptores de Glucocorticoides/metabolismo , Receptores de Glucocorticoides/antagonistas & inibidores , Sepse/tratamento farmacológico , Animais , NF-kappa B/metabolismo , NF-kappa B/antagonistas & inibidores , Camundongos , Transdução de Sinais/efeitos dos fármacos , Relação Estrutura-Atividade , Humanos , Estrutura Molecular , Células RAW 264.7 , Descoberta de Drogas , Masculino , Relação Dose-Resposta a Droga , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/uso terapêutico , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/síntese química
5.
Molecules ; 29(8)2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38675532

RESUMO

Pyxinol, an active metabolite of ginsenosides in human hepatocytes, exhibits various pharmacological activities. Here, a series of C-3 modified pyxinol derivatives was designed and virtually screened by molecular docking with the key inflammation-related proteins of the nuclear factor kappa B (NF-κB) pathway. Some of the novel derivatives were synthesized to assess their effects in inhibiting the production of nitric oxide (NO) and mitochondrial reactive oxygen species (MtROS) in lipopolysaccharide-triggered RAW264.7 cells. Derivative 2c exhibited the highest NO and MtROS inhibitory activities with low cytotoxicity. Furthermore, 2c decreased the protein levels of interleukin 1ß, tumor necrosis factor α, inducible nitric oxide synthase, and cyclooxygenase 2 and suppressed the activation of NF-κB signaling. Cellular thermal shift assays indicated that 2c could directly bind with p65 and p50 in situ. Molecular docking revealed that 2c's binding to the p65-p50 heterodimer and p50 homodimer was close to their DNA binding sites. In summary, pyxinol derivatives possess potential for development as NF-κB inhibitors.


Assuntos
Anti-Inflamatórios , Simulação de Acoplamento Molecular , NF-kappa B , Óxido Nítrico , NF-kappa B/metabolismo , NF-kappa B/antagonistas & inibidores , Camundongos , Animais , Células RAW 264.7 , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Óxido Nítrico/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Transdução de Sinais/efeitos dos fármacos , Lipopolissacarídeos/farmacologia , Humanos , Óxido Nítrico Sintase Tipo II/metabolismo , Óxido Nítrico Sintase Tipo II/antagonistas & inibidores , Relação Estrutura-Atividade
6.
J Am Chem Soc ; 146(17): 11811-11822, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38635880

RESUMO

The development of novel agents with immunoregulatory effects is a keen way to combat the growing threat of inflammatory storms to global health. To synthesize pseudo-steroidal glycosides tethered by ether bonds with promising immunomodulatory potential, we develop herein a highly effective deoxygenative functionalization of a novel steroidal donor (steroidation) facilitated by strain-release, leveraging cost-effective and readily available Sc(OTf)3 catalysis. This transformation produces a transient steroid-3-yl carbocation which readily reacts with O-, C-, N-, S-, and P-nucleophiles to generate structurally diverse steroid derivatives. DFT calculations were performed to shed light on the mechanistic details of the regioselectivity, underlying an acceptor-dependent steroidation mode. This approach can be readily extended to the etherification of sugar alcohols to enable the achievement of a diversity-oriented, pipeline-like synthesis of pseudo-steroidal glycosides in good to excellent yields with complete stereo- and regiospecific control for anti-inflammatory agent discovery. Immunological studies have demonstrated that a meticulously designed cholesteryl disaccharide can significantly suppress interleukin-6 secretion in macrophages, exhibiting up to 99% inhibition rates compared to the negative control. These findings affirm the potential of pseudo-steroidal glycosides as a prospective category of lead agents for the development of novel anti-inflammatory drugs.


Assuntos
Anti-Inflamatórios , Glicosídeos , Esteroides , Glicosídeos/química , Glicosídeos/síntese química , Glicosídeos/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Esteroides/química , Esteroides/farmacologia , Esteroides/síntese química , Camundongos , Animais , Humanos , Teoria da Densidade Funcional , Estrutura Molecular , Interleucina-6/antagonistas & inibidores , Interleucina-6/metabolismo , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/síntese química , Macrófagos/efeitos dos fármacos
7.
Org Biomol Chem ; 22(18): 3708-3724, 2024 05 08.
Artigo em Inglês | MEDLINE | ID: mdl-38639206

RESUMO

Despite the high global prevalence, rheumatoid arthritis lacks a satisfactory treatment. Hence, the present study is undertaken to design and synthesize novel anti-inflammatory compounds. For this, quinoline and anthranilic acid, two medicinally-privileged moieties, were linked by pharmacophore hybridization, and following their computational assessments, three hybrids 5a-c were synthesized in good over all yields. The in vitro and in vivo anti-inflammatory potential of these hybrids was determined by anti-denaturation and anti-proteinase, and carrageenan-induced paw edema models. The computational studies of these hybrids revealed their drug-likeness, optimum pharmacokinetics, and less toxicity. Moreover, they demonstrated high binding affinity (-9.4 to -10.6 kcal mol-1) and suitable binding interactions for TNF-α, FLAP, and COX-II. A three-step synthetic route resulted in the hybrids 5a-c with 83-86% yield of final step. At 50 µg mL-1, the antiprotease and anti-denaturation activity of compound 5b was significantly higher than 5a and 5c. Furthermore, 5b significantly reduced the edema in the right paw of the rats that received carrageenan. The results of this study indicate the medicinal worth of the novel hybrids in treating inflammatory disorders such as rheumatoid arthritis.


Assuntos
Desenho de Fármacos , Edema , Simulação de Acoplamento Molecular , Quinolinas , ortoaminobenzoatos , Quinolinas/química , Quinolinas/farmacologia , Quinolinas/síntese química , Animais , Edema/tratamento farmacológico , Edema/induzido quimicamente , ortoaminobenzoatos/química , ortoaminobenzoatos/farmacologia , ortoaminobenzoatos/síntese química , Ratos , Carragenina , Masculino , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Estrutura Molecular , Ratos Wistar , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/síntese química , Relação Dose-Resposta a Droga , Relação Estrutura-Atividade , Ciclo-Oxigenase 2/metabolismo , Ciclo-Oxigenase 2/química
8.
J Med Chem ; 67(9): 7088-7111, 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38634624

RESUMO

The novel metal(II)-based complexes HA-Cu, HA-Co, and HA-Ni with phenanthroline, sulfamethazine, and aromatic-aromatic coupled disulfamethazines as ligands were synthesized and characterized. HA-Cu, HA-Co, and HA-Ni all showed a broad spectrum of cytotoxicity and antiangiogenesis. HA-Cu was superior to HA-Co and HA-Ni, and even superior to DDP, showing significant inhibitory effect on the growth and development of tripe-negative breast cancer in vivo and in vitro. HA-Cu exhibited observable synergistic effects of antiproliferation, antiangiogenesis, anti-inflammatory, pro-apoptosis, and cuproptosis to effectively inhibited tumor survival and development. The molecular mechanism was confirmed that HA-Cu could downregulate the expression of key proteins in the VEGF/VEGFR2 signaling pathway and the expression of inflammatory cytokines, enhance the advantage of pro-apoptotic protein Bax, and enforce cuproptosis by weakening the expression of FDX1 and enhancing the expression of HSP70. Our research will provide a theoretical and practical reference for the development of metal-sulfamethazine and its derivatives as chemotherapy drugs for cancer treatment.


Assuntos
Inibidores da Angiogênese , Antineoplásicos , Apoptose , Complexos de Coordenação , Fenantrolinas , Neoplasias de Mama Triplo Negativas , Apoptose/efeitos dos fármacos , Humanos , Complexos de Coordenação/farmacologia , Complexos de Coordenação/química , Complexos de Coordenação/síntese química , Complexos de Coordenação/uso terapêutico , Animais , Fenantrolinas/farmacologia , Fenantrolinas/química , Fenantrolinas/síntese química , Feminino , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/patologia , Neoplasias de Mama Triplo Negativas/metabolismo , Inibidores da Angiogênese/farmacologia , Inibidores da Angiogênese/síntese química , Inibidores da Angiogênese/química , Inibidores da Angiogênese/uso terapêutico , Antineoplásicos/farmacologia , Antineoplásicos/síntese química , Antineoplásicos/química , Proliferação de Células/efeitos dos fármacos , Camundongos , Linhagem Celular Tumoral , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Sinergismo Farmacológico , Relação Estrutura-Atividade , Camundongos Endogâmicos BALB C , Ensaios de Seleção de Medicamentos Antitumorais
9.
Bioorg Med Chem Lett ; 106: 129770, 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38677560

RESUMO

We have previously reported the total synthesis and structure-activity relationships (SAR) of 2-prenylated benzopyrans with PPAR agonist activity. Herein, we have described the synthesis and PPAR activity of 2-prenylated benzopyrans and 2-prenylated quinolines. The benzopyran nucleus was generated via enamine-catalyzed Kabbe condensation, and the quinoline nucleus via Friedländer condensation. Results demonstrated that both benzopyran (5a) and quinoline (4b) derivatives bearing a γ,δ-unsaturated ester displayed a pan-PPAR agonism. They were full PPARα agonists, but showed different preferences for PPARγ and PPARß/δ activation. It was noteworthy that quinoline 4b displayed full hPPARα activation (2-fold than WY-14,643), weak PPARß/δ and partial PPARγ activation. In addition, quinoline 4b showed anti-inflammatory effects on macrophages by reducing LPS-induced expression of both MCP-1 and IL-6. Therefore, 4b emerges as a first-in-class promising hit compound for the development of potential therapeutics aimed at treating metabolic syndrome, metabolic dysfunction-associated fatty liver disease (MAFLD), and its associated cardiovascular comorbidities.


Assuntos
Síndrome Metabólica , Quinolinas , Síndrome Metabólica/tratamento farmacológico , Síndrome Metabólica/metabolismo , Quinolinas/química , Quinolinas/farmacologia , Quinolinas/síntese química , Relação Estrutura-Atividade , Humanos , Receptores Ativados por Proliferador de Peroxissomo/metabolismo , Receptores Ativados por Proliferador de Peroxissomo/agonistas , Estrutura Molecular , Lipopolissacarídeos/farmacologia , Lipopolissacarídeos/antagonistas & inibidores , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Relação Dose-Resposta a Droga , Benzopiranos/farmacologia , Benzopiranos/síntese química , Benzopiranos/química , Animais , Camundongos
10.
Chem Biodivers ; 21(5): e202400030, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38511964

RESUMO

A traditional Chinese medicine ingredient, dendrobine, has been demonstrated to have anti-inflammatory properties. However, due to its poor anti-inflammatory properties, its clinical use is limited. Consequently, we have designed and synthesized 32 new amide/sulfonamide dendrobine derivatives and screened their anti-inflammatory activities in vitro. Experiments showed that nitric oxide (NO) generation in lipopolysaccharide (LPS)-induced RAW264.7 cells was strongly reduced by derivative 14, with an IC50 of 2.96 µM. Western blot research revealed that 14 decreased the concentration-dependent expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (INOS). Molecular docking was used to predict the binding of the inflammation-associated proteins COX-2 and INOS to compound 14.


Assuntos
Amidas , Ciclo-Oxigenase 2 , Lipopolissacarídeos , Simulação de Acoplamento Molecular , Óxido Nítrico Sintase Tipo II , Óxido Nítrico , Sulfonamidas , Animais , Camundongos , Células RAW 264.7 , Sulfonamidas/química , Sulfonamidas/farmacologia , Sulfonamidas/síntese química , Lipopolissacarídeos/antagonistas & inibidores , Lipopolissacarídeos/farmacologia , Óxido Nítrico Sintase Tipo II/metabolismo , Óxido Nítrico Sintase Tipo II/antagonistas & inibidores , Óxido Nítrico/antagonistas & inibidores , Óxido Nítrico/biossíntese , Óxido Nítrico/metabolismo , Ciclo-Oxigenase 2/metabolismo , Amidas/química , Amidas/farmacologia , Amidas/síntese química , Relação Estrutura-Atividade , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Estrutura Molecular , Relação Dose-Resposta a Droga , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/síntese química , Anti-Inflamatórios não Esteroides/química
11.
Chem Biodivers ; 21(5): e202301260, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38513005

RESUMO

Microglia are key immune cells in the brain that maintain homeostasis and defend against immune threats. Targeting the dysfunctional microglia is one of the most promising approaches to inhibit neuroinflammation. In the current study, a diverse series of molecular hybrids were designed and screened through molecular docking against two neuroinflammatory targets, namely HMGB1 (2LY4) and HMGB1 Box A (4QR9) proteins. Based on the outcomes of docking scores fifteen compounds; ten furanyl-pyrazolyl acetamides 11(a-j), and five 2,4-thiazolidinyl-furan-3-carboxamide 15(a-e) derivatives were selected for further synthesis, followed by biological evaluation. The selected compounds, 11(a-j) and 15(a-e) were successfully synthesized with moderate to good yields, and structures were confirmed by IR, NMR, and mass spectra. The in-vitro cytotoxicity was evaluated on microglial cells namely BV-2, N-9, HMO6, leukemic HAP1, and human fibroblast cells. Further western-blot analysis revealed that 11h, 11f, 11c, 11j, 15d, 15c, 15e, and 15b compounds significantly suppressed anti-inflammatory markers such as TNF-α, IL-1, IL-6, and Bcl-2. All derivatives were moderate in potency compared to reference doxorubicin and could potentially act as novel anti-neuroinflammatory agents. This study can act as a beacon for further research in the application of furan-pyrazole and furan-2,4-thiazolidinediones as lead moieties for anti-neuroinflammatory and related diseases.


Assuntos
Acetamidas , Furanos , Simulação de Acoplamento Molecular , Humanos , Furanos/química , Furanos/farmacologia , Furanos/síntese química , Acetamidas/farmacologia , Acetamidas/química , Acetamidas/síntese química , Relação Estrutura-Atividade , Microglia/efeitos dos fármacos , Microglia/metabolismo , Pirazóis/química , Pirazóis/farmacologia , Pirazóis/síntese química , Estrutura Molecular , Animais , Camundongos , Sobrevivência Celular/efeitos dos fármacos , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/síntese química , Fármacos Neuroprotetores/química , Linhagem Celular , Relação Dose-Resposta a Droga , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química
12.
Chem Biodivers ; 21(5): e202400031, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38448389

RESUMO

Ulcerative colitis has been widely concerned for its persistent upward trend, and the sustained overproduction of pro-inflammatory cytokines such as IL-6 remains a crucial factor in the development of UC. Therefore, the identification of new effective drugs to block inflammatory responses is an urgent and viable therapeutic strategy for UC. In our research, twenty-three 6-acylamino/sulfonamido benzoxazolone derivatives were synthesized, characterized, and evaluated for anti-inflammatory activity against NO and IL-6 production in LPS-induced RAW264.7 cells. The results demonstrated that most of the target compounds were capable of reducing the overexpression of NO and IL-6 to a certain degree. For the most active compounds 3i, 3j and 3 l, the inhibitory activities were superior or equivalent to those of the positive drug celecoxib with a dose-dependent relationship. Furthermore, animal experiments revealed that active derivatives 3i, 3j and 3 l exhibited definitive therapeutical effect on DSS induced ulcerative colitis in mice by mitigating weight loss and DAI score while decreasing levels of pro-inflammatory cytokines such as IL-6 and IFN-γ, simultaneously increasing production of anti-inflammatory cytokines IL-10. In addition, compounds 3i, 3j and 3 l could also inhibit the oxidative stress to alleviate ulcerative colitis by decreasing MDA and MPO levels. These finding demonstrated that compounds 3i, 3j and 3 l hold significant potential as novel therapeutic agents for ulcerative colitis.


Assuntos
Benzoxazóis , Colite Ulcerativa , Interleucina-6 , Animais , Colite Ulcerativa/tratamento farmacológico , Camundongos , Interleucina-6/antagonistas & inibidores , Interleucina-6/metabolismo , Benzoxazóis/química , Benzoxazóis/farmacologia , Benzoxazóis/síntese química , Células RAW 264.7 , Relação Estrutura-Atividade , Lipopolissacarídeos/antagonistas & inibidores , Lipopolissacarídeos/farmacologia , Óxido Nítrico/antagonistas & inibidores , Óxido Nítrico/metabolismo , Óxido Nítrico/biossíntese , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/uso terapêutico , Sulfato de Dextrana , Descoberta de Drogas , Estrutura Molecular , Relação Dose-Resposta a Droga
13.
J Steroid Biochem Mol Biol ; 240: 106478, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38430971

RESUMO

Inflammation, an important biological protective response to tissue damage or microbial invasion, is considered to be an alarming signal for the progress of varied biological complications. Based on the previous reports in the literature that proved the noticeable efficacy of pyrazole and thiazole scaffold as well as nitrogen heterocyclic based compounds against acute and chronic inflammatory disease, a new set of novel D-ring substituted steroidal 4,5-dihydropyrazole thiazole derivatives were synthesized and evaluated their anti-inflammatory activities in vitro. Preliminary structure-activity relationship (SAR) analysis was conducted by their inhibitory activities against nitric oxide (NO) release in lipopolysaccharide (LPS)-induced RAW 264.7 cells, and the optimal compound 12b [3ß-hydroxy-pregn-5-en-17ß-yl-5'- (o- chlorophenyl)- 1'-(4''- phenyl -[1'', 3'']- thiazol-2''- yl) - 4',5'-dihydro - 1'H-pyrazol - 3'- yl] exhibited more potent anti-inflammatory activity than the positive control treatment methylprednisolone (MPS), with an IC50 value of 2.59 µM on NO production and low cytotoxicity against RAW 264.7 cells. In further mechanism study, our results showed that compound 12b significantly suppressed the production of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and inhibited the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) through blocking NF-κB p65 nuclear translocation and phosphorylation of IκBα. Compound 12b also attenuated LPS-induced activation of c-Jun amino-terminal kinase (JNK) and p38 phosphorylation in RAW 264.7 cells. Molecular docking study revealed the strong binding affinity of compound 12b to the active site of the COX-2 proteins, which confirmed that compound 12b acted as an anti-inflammatory mediator. These results indicate that steroidal derivatives bearing 4,5-dihydropyrazole thiazole structure might be considered for further research and scaffold optimization in designing anti-inflammatory drugs and compound 12b might be a promising therapeutic anti-inflammatory drug candidate.


Assuntos
Anti-Inflamatórios , Ciclo-Oxigenase 2 , Desenho de Fármacos , Lipopolissacarídeos , Simulação de Acoplamento Molecular , Óxido Nítrico Sintase Tipo II , Pirazóis , Tiazóis , Animais , Camundongos , Lipopolissacarídeos/farmacologia , Células RAW 264.7 , Óxido Nítrico Sintase Tipo II/metabolismo , Ciclo-Oxigenase 2/metabolismo , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Pirazóis/farmacologia , Pirazóis/química , Pirazóis/síntese química , Tiazóis/farmacologia , Tiazóis/química , Tiazóis/síntese química , Relação Estrutura-Atividade , Óxido Nítrico/metabolismo , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Inibidores de Ciclo-Oxigenase 2/farmacologia , Inibidores de Ciclo-Oxigenase 2/síntese química , Inibidores de Ciclo-Oxigenase 2/química
14.
J Nat Prod ; 87(4): 1131-1149, 2024 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-38555526

RESUMO

Herein, the first total synthesis of natural 13-hydroxy-14-deoxyoxacyclododecindione along with the revision of the proposed configuration is reported. This natural product, initially discovered in 2018, belongs to the oxacyclododecindione family, renowned for their remarkable anti-inflammatory and antifibrotic activities. The synthetic route involves an esterification/Friedel-Crafts-acylation approach and uses various triol fragments. It allows the preparation of different stereoisomers, including the (revised) natural product, two threo-derivatives, and two Z-isomers of the endocyclic C═C double bond. Furthermore, a late-stage inversion of the C-13 stereocenter could transform the originally proposed structure into the revised natural product. With this comprehensive set of compounds and the previously prepared (13R,14S,15R)-isomer, deeper insights into their structural properties and biological activities were obtained. A detailed analysis of the final macrolactones using spectroscopy (NMR, IR, UV-vis) and X-ray crystallography gave new insights such as the significance of the optical rotation for the elucidation of their configuration and the light-induced E/Z double-bond photoisomerization. The pharmacological potential of the compounds was underlined by remarkably low IC50 values in biological assays addressing the inhibition of cellular inflammatory responses.


Assuntos
Anti-Inflamatórios , Macrolídeos , Humanos , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Produtos Biológicos/farmacologia , Produtos Biológicos/química , Produtos Biológicos/síntese química , Lactonas/farmacologia , Lactonas/química , Lactonas/síntese química , Estrutura Molecular , Estereoisomerismo , Macrolídeos/química , Macrolídeos/farmacologia
15.
Arch Pharm (Weinheim) ; 357(5): e2300615, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38315093

RESUMO

Novel arylidene-5(4H)-imidazolone derivatives 4a-r were designed and evaluated as multidrug-directed ligands, that is, inflammatory, proinflammatory mediators, and reactive oxygen species (ROS) inhibitors. All of the tested compounds showed cyclooxygenase (COX)-1 inhibitory effect more than celecoxib and less than indomethacin and also demonstrated an improved inhibitory activity against 15-lipoxygenase (15-LOX). Compounds 4f, 4l, and 4p exhibited COX-2 selectivity comparable to that of celecoxib, while 4k was the most selective COX-2 inhibitor. Interestingly, the screened results showed that compound 4k exhibited a superior inhibition effect against 15-LOX and was found to be the most selective COX-2 inhibitor over celecoxib, whereas compound 4f showed promising COX-2 and 15-LOX inhibitory activities besides its inhibitory effect against ROS production and its lowering effect of both tumor necrosis factor-α and interleukin-6 levels by ∼80%. Moreover, compound 4f attenuated the lipopolysaccharide-mediated increase in NF-κB activation in RAW 264.7 macrophages. The preferred binding affinity of these molecules was confirmed by docking studies. We conclude that arylidene-5(4H)-imidazolone scaffolds provide promising hits for developing new synthons with anti-inflammatory and antioxidant activities.


Assuntos
Araquidonato 15-Lipoxigenase , Inibidores de Ciclo-Oxigenase 2 , Desenho de Fármacos , Inibidores de Lipoxigenase , Simulação de Acoplamento Molecular , Espécies Reativas de Oxigênio , Camundongos , Animais , Células RAW 264.7 , Relação Estrutura-Atividade , Araquidonato 15-Lipoxigenase/metabolismo , Inibidores de Lipoxigenase/farmacologia , Inibidores de Lipoxigenase/síntese química , Inibidores de Lipoxigenase/química , Inibidores de Ciclo-Oxigenase 2/farmacologia , Inibidores de Ciclo-Oxigenase 2/síntese química , Inibidores de Ciclo-Oxigenase 2/química , Estrutura Molecular , Espécies Reativas de Oxigênio/metabolismo , Ciclo-Oxigenase 2/metabolismo , Relação Dose-Resposta a Droga , Lipopolissacarídeos/farmacologia , Lipopolissacarídeos/antagonistas & inibidores , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/síntese química , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Humanos
16.
Curr Pharm Des ; 30(5): 333-351, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38303528

RESUMO

Due to its important biological and pharmacological properties, in the field of medicinal chemistry and drug discovery, the N-acylhydrazone motif has shown to be extremely adaptable and promising. This scaffold has become a crucial component in the synthesis of numerous bioactive agents. N-Acylhydrazones are also interesting biological and synthetic tools due to their easy and straightforward synthesis. The current review provides a summary of the analgesic and anti-inflammatory activities of N-acylhydrazone derivatives over the past ten years. A brief discussion of structure-activity relationships is also provided which may guide researchers in medicinal chemistry to develop derivatives based on N-acylhydrazone scaffold as potent anti-inflammatory candidates.


Assuntos
Analgésicos , Hidrazonas , Hidrazonas/farmacologia , Hidrazonas/química , Hidrazonas/síntese química , Hidrazonas/uso terapêutico , Humanos , Analgésicos/farmacologia , Analgésicos/química , Analgésicos/síntese química , Animais , Anti-Inflamatórios não Esteroides/farmacologia , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/síntese química , Estrutura Molecular , Relação Estrutura-Atividade , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/síntese química , Dor/tratamento farmacológico , Farmacóforo
17.
Molecules ; 28(14)2023 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-37513362

RESUMO

Heterocyclic compounds are significant lead drug candidates based on their various structure-activity relationships (SAR), and their use in pharmaceutics is constantly developing. Benzimidazole (BnZ) is synthesized by a condensation reaction between benzene and imidazole. The BnZ structure consists of two nitrogen atoms embedded in a five-membered imide ring which is fused with a benzene ring. This review examines the conventional and green synthesis of metallic and non-metallic BnZ and their derivatives, which have several potential SARs, along with a wide range of pharmacological properties, including anti-cancer, anti-inflammatory, anti-microbial, anti-tubercular, and anti-protozoal properties. These compounds have been proven by pharmacological investigations to be efficient against different strains of microbes. Therefore, in this review, the structural variations of BnZ are listed along with various applications, predominantly related to their biological activities.


Assuntos
Anti-Infecciosos , Anti-Inflamatórios , Benzimidazóis , Benzimidazóis/síntese química , Benzimidazóis/química , Benzimidazóis/farmacologia , Relação Estrutura-Atividade , Benzeno/química , Imidazóis/química , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Catálise , Metais/química
18.
Eur J Med Chem ; 245(Pt 1): 114911, 2023 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-36379106

RESUMO

Systemic inflammatory responses often result in sepsis and inhibition of inflammation is one strategy for sepsis treatment. In this study, we designed and synthesized 32 novel hederagenin (HD) derivatives with modifications at the A-ring, C-28, and C-23 positions and screened their anti-inflammatory activities in vitro, finding multiple compounds with potential anti-inflammatory activity. Of these, compound 1 was the most effective and was used for subsequent investigations into its mechanism of action and in vivo activity. In vivo assessments of anti-inflammatory activity showed that compound 1 reduced inflammation in a mouse model of sepsis with acute liver injury caused by lipopolysaccharide (LPS). Compound 1 also inhibited STING, p-IRF3, p-TBK1, p-p65, and p-IκB proteins in cGAS-STING-associated signaling. These findings indicated that compound 1 reduced inflammation through inhibition of STING expression and hence reducing activation of STING and nuclear factor-κB (NF-κB) signaling. Our work demonstrated that compound 1 is a promising lead compound for designing and developing anti-sepsis drugs.


Assuntos
Anti-Inflamatórios , Falência Hepática Aguda , NF-kappa B , Sepse , Animais , Camundongos , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Inflamação/tratamento farmacológico , Lipopolissacarídeos , Fígado/efeitos dos fármacos , Fígado/metabolismo , NF-kappa B/metabolismo , Sepse/complicações , Sepse/tratamento farmacológico , Falência Hepática Aguda/microbiologia , Falência Hepática Aguda/prevenção & controle
19.
Molecules ; 27(5)2022 Mar 03.
Artigo em Inglês | MEDLINE | ID: mdl-35268778

RESUMO

Marine organisms are an important source of natural products with unique and diverse chemical structures that may hold the key for the development of novel drugs. Docosahexaenoic acid (DHA) is an omega-3 fatty acid marine natural product playing a crucial regulatory role in the resolution of inflammation and acting as a precursor for the biosynthesis of the anti-inflammatory specialized pro-resolving mediators (SPMs) resolvins, protectins, and maresins. These metabolites exert many beneficial actions including neuroprotection, anti-hypertension, or anti-tumorigenesis. As dysregulation of SPMs is associated with diseases of prolonged inflammation, the disclosure of their bioactivities may be correlated with anti-inflammatory and pro-resolving capabilities, offering new targets for drug design. The availability of these SPMs from natural resources is very low, but the evaluation of their pharmacological properties requires their access in larger amounts, as achieved by synthetic routes. In this report, the first review of the total organic syntheses carried out for resolvins, protectins, and maresins is presented. Recently, it was proposed that DHA-derived pro-resolving mediators play a key role in the treatment of COVID-19. In this work we also review the current evidence on the structures, biosynthesis, and functional and new-found roles of these novel lipid mediators of disease resolution.


Assuntos
Anti-Inflamatórios/uso terapêutico , Ácidos Docosa-Hexaenoicos/metabolismo , Inflamação/prevenção & controle , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/metabolismo , COVID-19/virologia , Ácidos Docosa-Hexaenoicos/biossíntese , Ácidos Docosa-Hexaenoicos/síntese química , Ácidos Docosa-Hexaenoicos/química , Ácidos Docosa-Hexaenoicos/uso terapêutico , Desenho de Fármacos , Humanos , Inflamação/patologia , SARS-CoV-2/isolamento & purificação , Tratamento Farmacológico da COVID-19
20.
Molecules ; 27(4)2022 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-35209221

RESUMO

Copper oxide nanoparticles (CuO NPs) were synthesized through the coprecipitation method and used as nanocarriers for etoricoxib (selective COX-2 inhibitor drug) and montelukast (leukotriene product inhibitor drug) in combination therapy. The CuO NPs, free drugs, and nanoformulations were investigated through UV/Vis spectroscopy, FTIR spectroscopy, XRD, SEM, and DLS. SEM imaging showed agglomerated nanorods of CuO NPs of about 87 nm size. The CE1, CE2, and CE6 nanoformulations were investigated through DLS, and their particle sizes were 271, 258, and 254 nm, respectively. The nanoformulations were evaluated through in vitro anti-inflammatory activity, in vivo anti-inflammatory activity, in vivo analgesic activity, in vivo anti-pyretic activity, and in vivo acute toxicity activity. In vivo activities were performed on albino mice. BSA denaturation was highly inhibited by CE1, CE2, and CE6 as compared to other nanoformulations in the in vitro anti-inflammatory activity. The in vivo bioactivities showed that low doses (5 mg/kg) of nanoformulations were more potent than high doses (10 and 20 mg/kg) of free drugs in the inhibition of pain, fever, and inflammation. Lastly, CE2 was more potent than that of other nanoformulations.


Assuntos
Acetatos/síntese química , Acetatos/farmacologia , Cobre/química , Ciclopropanos/síntese química , Ciclopropanos/farmacologia , Etoricoxib/síntese química , Etoricoxib/farmacologia , Nanopartículas Metálicas , Quinolinas/síntese química , Quinolinas/farmacologia , Sulfetos/síntese química , Sulfetos/farmacologia , Acetatos/química , Analgésicos/síntese química , Analgésicos/química , Analgésicos/farmacologia , Anti-Infecciosos/síntese química , Anti-Infecciosos/química , Anti-Infecciosos/farmacologia , Anti-Inflamatórios/síntese química , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Técnicas de Química Sintética , Ciclopropanos/química , Composição de Medicamentos , Etoricoxib/química , Nanopartículas Metálicas/química , Nanopartículas Metálicas/ultraestrutura , Quinolinas/química , Análise Espectral , Relação Estrutura-Atividade , Sulfetos/química
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...