Synthesis and biological evaluation of novel tryptoline derivatives as indoleamine 2,3-dioxygenase (IDO) inhibitors
作者:Minoru Tanaka、Xin Li、Hidemasa Hikawa、Takafumi Suzuki、Katsuhiko Tsutsumi、Masashi Sato、Osamu Takikawa、Hideharu Suzuki、Yuusaku Yokoyama
DOI:10.1016/j.bmc.2012.12.028
日期:2013.3
Indoleamine 2,3-dioxygenase (IDO) plays a significant role in several disorders such as Alzheimer's disease, age-related cataracts and tumors. A series of novel tryptoline derivatives were synthesized and evaluated for their inhibitory activity against IDO. Substituted tryptoline derivatives (11a, 11c, 11e, 12b and 12c) were demonstrated to be more potent than known inhibitor MTH-Trp. Suzuki-Miyaura cross-coupling reaction of 11a-d with phenylboronic acid proceeded in high yields. In most cases, C5 and C6 substitutions on the corresponding indole ring were well tolerated. The tryptoline derivative 11c is a promising chemical lead for the discovery of novel IDO inhibitors. (C) 2013 Elsevier Ltd. All rights reserved.