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Letters in Drug Design & Discovery

Editor-in-Chief

ISSN (Print): 1570-1808
ISSN (Online): 1875-628X

C5,C6-Disubstituted 1H-Indole-2-Carboxamides: Synthesis and Cytotoxic Activity in the Human Non-Small Lung Cancer Cell Line NSCLC-N16-L16

Author(s): Andrew Tsotinis, Maria Gerasimopoulou, Margarita Vlachou, Dimitri Moreau and Christos Roussakis

Volume 3 , Issue 1 , 2006

Page: [14 - 16] Pages: 3

DOI: 10.2174/157018006775240980

Price: $65

Abstract

A facile synthesis of the disubstituted 1H-indole-2-carboxamides (6a-h) is described. Readily available 4-benzyloxy-3-methoxybenzaldehyde is converted to the parent acid (12) by nucleophilic attack of the azido-ester (9) and cyclization of the propenoic methyl ester (10). The target compounds (6a-d) were obtained by amidation of (12) with the appropriate primary amine. The new 6-hydroxy analogs (6e-h) were prepared by benzyl deprotection of (6a-d). The cytotoxicity of the new molecules was evaluated in the human non-small lung cancer cell line NSCLC-N16-L16 in vitro. One compound (6d) showed satisfactory activity (IC50 = 13.9 μM) worthy of further study. It is noteworthy that few agents are clinically effective against human non-small lung cancer, and thus there is a need for novel agents for use in this disease.

Keywords: Disubstituted 1H-indole-2-carboxamides, synthesis, cytotoxicity


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