Asymmetric synthesis of 1-azaspiro[4.5]decanes via intramolecular dipolar cycloaddition of nitrones containing the bornane-10,2-sultam chiral auxiliary

被引:19
作者
Bagley, MC [1 ]
Oppolzer, W [1 ]
机构
[1] Univ Geneva, Dept Chim Organ, CH-1211 Geneva 4, Switzerland
关键词
D O I
10.1016/S0957-4166(00)00205-6
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The intramolecular 1,3-dipolar cycloaddition of a cyclic nitrone, prepared by an asymmetric electrophilic enolate hydroxyamination using the (2R)-bornane-10,2-sultam chiral auxiliary, proceeds to give bridged and fused cycloadducts with total diastereocontrol. Reduction of the fused isoxazolidine provides a 1-azaspiro[4.5]-decane as a potential intermediate in the asymmetric synthesis of the cylindricine alkaloids. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2625 / 2633
页数:9
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