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Stereoselective synthesis of the bicyclo[5.3.0]decane portion of the diterpene antibiotic guanacastepene using a pyrylium-ylide [5+2] cycloaddition reaction
被引:52
|作者:
Magnus, P
[1
]
Waring, MJ
[1
]
Ollivier, C
[1
]
Lynch, V
[1
]
机构:
[1] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA
关键词:
guanacastepene;
antibiotic;
pyrylium-ylide;
conjugate addition;
D O I:
10.1016/S0040-4039(01)00851-6
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Treatment of 14 with Ac2O/Et3N resulted in [5+2] cyclization to give 2, which was further elaborated into 20, thus establishing the required stereochemistry in the top-half of guanacastepene 1. (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码:4947 / 4950
页数:4
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