OXIDATIVE POLYCYCLIZATION VERSUS THE POLYEPOXIDE CASCADE - NEW PATHWAYS IN POLYETHER (BIO)SYNTHESIS

被引:23
作者
KOERT, U
机构
[1] Fachbereich Chemie, Universität Marburg, D-35032, Hans‐Meerwein‐Strasse
来源
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1995年 / 34卷 / 03期
关键词
BIOSYNTHESIS; CYCLIZATIONS; OXIDATIONS; POLYETHERS;
D O I
10.1002/anie.199502981
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
By which route is monensin A biosynthesized? Is an (E.E.E.) triene first epoxidized and the polyepoxide then transformed into the natural product in a cascade of ring openings and ring closures? Or does a (Z.Z.Z.) triene undergo successive oxidative cyclizations to give monensin A directly? New results from McDonald and Towne, who carried out oxidations of (Z) dienes with pyridinium chlorochromate, support the second route. (Figure Presented.) Copyright © 1995 by VCH Verlagsgesellschaft mbH, Germany
引用
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页码:298 / 300
页数:3
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