Synthetic approaches to Rapamycin: Synthesis of a C10-C26 fragment via a one-pot Julia olefination reaction

被引:0
|
作者
Bellingham, R [1 ]
Jarowicki, K [1 ]
Kocienski, P [1 ]
Martin, V [1 ]
机构
[1] UNIV SOUTHAMPTON,DEPT CHEM,SOUTHAMPTON SO17 1BJ,HANTS,ENGLAND
来源
SYNTHESIS-STUTTGART | 1996年 / 02期
关键词
Rapamycin; immunosuppressant; ketenedithioacetal; triene 1,4-asymmetric induction; Julia olefination;
D O I
暂无
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Keys steps in a synthesis of the C10-C26 fragment of the immunosuppressant Rapamycin include (a) the use of a metallated benzothiazolyl sulfone in a one-pot Julia olefination to create the C21-C22 alkene stereoselectively and (b) a diastereoselective acid-catalysed cyclisation of a hydroxyl function onto a ketenedithioacetal (1,4-asymmetric induction) in order to create the oxane ring and fix the stereochemistry at C11.
引用
收藏
页码:285 / &
页数:13
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