期刊
TETRAHEDRON
卷 57, 期 40, 页码 8425-8442出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(01)00825-0
关键词
terpenes and terpenoiods; biologically active compounds; common synthetic strategy; 1,1,5-trimethyl-trans-decalin nucleus
We have developed a simple and practical method for providing enantiomeric ally pure bi-, tri-, and tetracyclic frameworks having a 1,1,5-trimethyl-trans-decalin nucleus, and demonstrated their utility for terpenoid synthesis. Thus, we achieved the stereocontrolled total syntheses of (+)-acuminolide as a bicyclic, (-)-spongianolide A as a tricyclic, and (+)-scalarenedial as a tetracyclic terpenoid from the corresponding optically pure cyclic beta -ketoesters, which were obtained by repeating the same method of the ring construction, including the olefin cyclization with Lewis acid, followed by simple optical resolution using chiral auxiliaries for acetal formation, respectively. This is a general and valuable strategy for the synthesis of enantiomerically pure cyclic terpenoids having the 1,1,5-trimethyl-trans-decalin nucleus. (C) 2001 Elsevier Science Ltd. All rights reserved.
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