共 5 条
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.
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页码:285 / &
页数:13
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