In the course of a program aimed at designing antitumor agents containing an indolocarbazole framework, an efficient synthetic scheme based on the use of 3,4-dibromo-N-methylmaleimide and 7-azaindole has been developed to elaborate a series of mono- and di-aza derivatives of arcyriaflavin. The procedure was further exploited to introduce a hydroxyl group at different positions on the indole moiety of the non-symmetrical compounds. The DNA binding capacity and cytotoxic potential of these 7-azaindolocarbazole derivatives was evaluated. (C) 2002 Elsevier Science Ltd. All rights reserved.
First synthesis of symmetrical and non-symmetrical aza indolocarbazoles derivatives
作者:Sylvain Routier、Gérard Coudert、Jean-Yves Mérour、Daniel Henri Caignard
DOI:10.1016/s0040-4039(02)00315-5
日期:2002.4
A new family of aza-indolocarbazoles 2-3 was built from protected 3-(3-indolyl)-4-bromo-N-methylmaleimide in a few efficient steps. Symmetrical and non-symmetrical products were obtained. Regioselectivity of anionic condensation was controlled. A possible selective deprotection between an N-Boc and N-benzenesulphonyl group using mild basic conditions was confirmed. (C) 2002 Elsevier Science Ltd. All rights reserved.