Bioactive staurosporine derivatives from the Streptomyces sp. NB-A13.
Bioorg Chem
; 82: 33-40, 2019 02.
Article
em En
| MEDLINE
| ID: mdl-30268972
ABSTRACT
Six new (1-6) and nine known (7-15) staurosporine derivatives were isolated from the rice solid fermentation of the marine-derived Streptomyces sp. NB-A13. The structures of the new staurosporine derivatives were established by extensive spectroscopic data interpretation. The absolute configurations of 1 and 2 were assigned by quantum chemical calculations of the electronic circular dichroism (ECD) spectra. All of these compounds were screened for their cytotoxic activities against PC-3 and SW-620 cell lines. Compound 7 exhibited stronger inhibitory activity against SW-620 cell lines than the positive control staurosporine (25.10â¯nM), with IC50 values of 9.99â¯nM. Moreover, compounds 1-5, 8-13 and 15 also showed significant cytotoxicities with IC50 values ranging from 0.02 to 16.60⯵M, while 6 exhibited no cytotoxic potency. Additionally, compounds 1-7 were also tested for enzyme inhibition activities of Protein kinase C theta (PKC-θ), and showed activity with IC50 values ranging from 0.06 to 9.43⯵M except for compound 6, which has no inhibition activity.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Streptomyces
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Estaurosporina
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Inibidores de Proteínas Quinases
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Antineoplásicos
Limite:
Humans
Idioma:
En
Revista:
Bioorg Chem
Ano de publicação:
2019
Tipo de documento:
Article