RESUMEN
A new clerodane diterpene, named 6α-hydroxy-3,13E-clerodien-15-oic acid (1), together with a known clerodane diterpene (2), four known labdane diterpenes (3-6), a triterpenoid (7), a known steroid (8), and two benzenoid compounds (9 and 10) were isolated from Detarium microcarpum Guill. & Perr. The structures of all obtained compounds were determined by chemical properties and spectroscopic evidence, accompanied by comparisons with data in the literature. Electronic circular dichroism (ECD) was performed for compounds 1-4 to confirm the absolute configuration. Compounds 1-3 and 8-10 were evaluated for the protective effect on osteoblasts. Compound 1 was observed to increase the proliferation of dexamethasone (DEX)-treated MC3T3-E1 cells significantly at 1 µM, which was comparable with the positive control geniposide at 10 µM. The results were further confirmed by flow cytometry analysis. In addition, compound 1 increased the level of alkaline phosphatase (ALP) and mineralization in osteoblasts inhibited by DEX. Moreover, Compound 9 (vanillic acid) showed a pronounced inhibition (IC50 6.5 ± 0.6 µM) on reactive oxygen species (ROS) production, and 10 (4-O-methyl gallic acid) showed a good inhibition with IC50 as 103.3 ± 2.2 µM, compared with the standard drug ibuprofen (IC50 54.2 ± 9.2 µM). Besides, compounds 1-3 and 8-10 were non-cytotoxic against MCF-7, NCI-H460, Hela, and BJ cell lines.
Asunto(s)
Diterpenos de Tipo Clerodano , Diterpenos , Osteoporosis , Triterpenos , Diterpenos/química , Diterpenos/farmacología , Diterpenos de Tipo Clerodano/química , Diterpenos de Tipo Clerodano/farmacología , Humanos , Estructura Molecular , Osteoporosis/tratamiento farmacológico , Especies Reactivas de OxígenoRESUMEN
Two new ursane-type triterpenoids, named Polyanside A (1) and B (2), along with eleven known compounds (3-13), were isolated and elucidated from Maranthes polyandra (Benth.) Prance. The structures of these compounds were elucidated based on chemical evidence and multiple spectroscopic data. Isolated compounds were evaluated for anti-cancer, anti-inflammatory activities, and cytotoxicity on a normal human cell line (BJ). None of them showed activity and cytotoxicity. The hexane fraction was analyzed by GC-MS, resulting in the identification of forty-one compounds. This is the first comprehensive study on the phytochemistry of M. polyandra.
Asunto(s)
Chrysobalanaceae/química , Fitoquímicos/análisis , Fitoquímicos/química , Fraccionamiento Químico , Cromatografía de Gases y Espectrometría de Masas , Humanos , Estructura Molecular , Fitoquímicos/aislamiento & purificación , Extractos Vegetales/análisis , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificaciónRESUMEN
The leaf extract of Turraea vogelii Hook. f. ex. Benth. is used in ethnomedicine for the management of pain and inflammation. Anti-nociceptive activity was determined using acetic acid-induced mouse writhing model. The anti-inflammatory activity was investigated using in-vitro bovine serum albumin (BSA) denaturation assay and BSA-induced hind paw edema in rats. The extract (125-500 mg/kg) administered via the oral route produced a significant (p<0.005) inhibition of acetic acid-induced writhes. The percent inhibition of writhes for extract (500 mg/kg) and diclofenac (10 mg/kg) was 53.3 and 59.5% respectively. The methanol extract (10-6-1.0 µg/mL) inhibited protein denaturation with IC50values of (1.06 × 10-3 µg/mL and 2.58 × 10-3 µg/mL) for extract and diclofenac respectively. Furthermore, the leaf extract (62.5 mg/kg) significantly (p<0.05) inhibited BSA-induced paw edema in rats. The methanol leaf extract of T. vogelii has anti-nociceptive and anti-inflammatory activities. These findings justify the use of the plant in traditional medicine for the management of pain and inflammation.