Design, Synthesis, and Biological Evaluation of Biotin Conjugates of 2-Cyano-3,12-dioxooleana-1,9(11)-dien-28-oic Acid for the Isolation of the Protein Targets
作者:Tadashi Honda、Tomasz Janosik、Yukiko Honda、Jie Han、Karen T. Liby、Charlotte R. Williams、Robin D. Couch、Amy C. Anderson、Michael B. Sporn、Gordon W. Gribble
DOI:10.1021/jm049727e
日期:2004.9.1
structure-activity relationships. For the synthesis of 6, a new important precursor, 23-hydroxy-CDDO-Me (29) was synthesized from 20 by a C-23 oxidation protocol, which involves cyclopalladation of the C-4 methyl group from a 3-one oxime. The inhibitory activity of C-23 conjugate 6 is only about 3 times less potent than the mother compound, CDDO, against the proliferation of MCF-7 breast cancer cells. Consequently