Syntheses, biochemical and biological evaluation of staurosporine analogues from the microbial metabolite rebeccamycin.

Abstract:

:The indolocarbazole antibiotics staurosporine and rebeccamycin (1) are potent antitumor drugs targeting protein kinase C and topoisomerase I, respectively. To obtain staurosporine analogues from rebeccamycin, different structural modifications were performed: coupling of the sugar moiety to the second indole nitrogen, dechlorination and then reduction of the imide function to amide. The newly synthesized compounds (3-6) were tested for their abilities to bind to DNA and to inhibit topoisomerase I and protein kinase C. Their antiproliferative effects in vitro against B16 melanoma and P388 leukemia (including the related P388CPT cell line resistant to camptothecin) as well as their anti-HIV-1 and antimicrobial activities against various strains of microorganisms were determined. The cytotoxicity of the dechlorinated imide analogue 5 correlates well with its DNA binding and anti-topoisomerase I activities. These findings provide guidance for the development of new topoisomerase I-targeted antitumor indolocarbazoles equipped with a carbohydrate attached to the two indole nitrogens.

journal_name

Bioorg Med Chem

authors

Anizon F,Moreau P,Sancelme M,Voldoire A,Prudhomme M,Ollier M,Sevère D,Riou JF,Bailly C,Fabbro D,Meyer T,Aubertin AM

doi

10.1016/s0968-0896(98)00096-0

subject

Has Abstract

pub_date

1998-09-01 00:00:00

pages

1597-604

issue

9

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(98)00096-0

journal_volume

6

pub_type

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