Bioorganic & Medicinal Chemistry 2013-03-01

Synthesis and biological evaluation of novel tryptoline derivatives as indoleamine 2,3-dioxygenase (IDO) inhibitors.

Minoru Tanaka, Xin Li, Hidemasa Hikawa, Takafumi Suzuki, Katsuhiko Tsutsumi, Masashi Sato, Osamu Takikawa, Hideharu Suzuki, Yuusaku Yokoyama

Index: Bioorg. Med. Chem. 21(5) , 1159-65, (2013)

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Abstract

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.Copyright © 2013. Published by Elsevier Ltd.

Related Compounds

  • Tryptoline

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