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Tetrahedron. 2008 Dec 15;64(51):11541-11548.

Chemical modifications of natural triterpenes - glycyrrhetinic and boswellic acids: evaluation of their biological activity.

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1
Department of Organic chemistry, Indian Institute of Science, Bangalore 560 012, India.

Abstract

Synthetic analogues of naturally occurring triterpenoids; glycyrrhetinic acid, arjunolic acid and boswellic acids, by modification of A-ring with a cyano- and enone- functionalities, have been reported. A novel method of synthesis of α-cyanoenones from isoxazoles is reported. Bio-assays using primary mouse macrophages and tumor cell lines indicate potent anti-inflammatory and cytotoxic activities associated with cyanoenones of boswellic acid and glycyrrhetinic acid.

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