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 Chemjournal_title
Bioorganic & medicinal chemistryauthors
Anizon F,Moreau P,Sancelme M,Voldoire A,Prudhomme M,Ollier M,Sevère D,Riou JF,Bailly C,Fabbro D,Meyer T,Aubertin AMdoi
10.1016/s0968-0896(98)00096-0subject
Has Abstractpub_date
1998-09-01 00:00:00pages
1597-604issue
9eissn
0968-0896issn
1464-3391pii
S0968-0896(98)00096-0journal_volume
6pub_type
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