Astins A and B, antitumor cyclic pentapeptides from Aster tataricus.
- 1 January 1993
- journal article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 41 (5) , 992-993
- https://doi.org/10.1248/cpb.41.992
Abstract
Two novel antitumor chlorine- and allo Thr-containing cyclic pentapeptides, named astins A and B, both of which were isomers and took a cis configuration in one of the amide bonds, were isolated from Aster tataricus together with astin C. Their structures were solved by spectroscopic analysis and chemical degradation.Keywords
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