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  • Title: Structure-activity relationships of indole compounds derived from combretastatin A4: synthesis and biological screening of 5-phenylpyrrolo[3,4-a]carbazole-1,3-diones as potential antivascular agents.
    Author: Ty N, Dupeyre G, Chabot GG, Seguin J, Quentin L, Chiaroni A, Tillequin F, Scherman D, Michel S, Cachet X.
    Journal: Eur J Med Chem; 2010 Sep; 45(9):3726-39. PubMed ID: 20538383.
    Abstract:
    A series of 5-(3',4',5'-trimethoxyphenyl)pyrrolo[3,4-a]carbazole-1,3(2H,10H)-diones was designed as cis-restricted analogues of 3-aroylindoles, arylthioindoles and 3-benzylidoneindolin-2-ones derived from combretastatin A4 (CA-4). Starting from various indoles, compounds were synthesized by means of a convenient two-step procedure involving a one-pot multicomponent reaction as key step. Intermediate tetrahydro[3,4-a]carbazoles and their corresponding carbazoles were submitted to biological screening tests involved in antivascular action, including the cytotoxicity against murine B16 melanoma cells, the rounding up of endothelial cells (EA.hy 926) and the inhibition of tubulin polymerization. Of the 31 compounds screened, those bearing a methoxy group at the 8-position endowed significant biological activities. A carbazole compound 30 was identified as a promising candidate for further development of novel vascular targeting agents.
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