Synthesis of unsaturated lactone moieties by asymmetric hetero Diels-Alder reactions with binaphthol-titanium complexes

被引:50
作者
Quitschalle, M [1 ]
Christmann, M [1 ]
Bhatt, U [1 ]
Kalesse, M [1 ]
机构
[1] Univ Hannover, Inst Organ Chem, D-30167 Hannover, Germany
关键词
D O I
10.1016/S0040-4039(00)02213-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Natural products like ratjadone and callystatin A contain an alpha,beta -unsaturated lactone moiety which adds to the biological activity of these compounds. Here we report a rapid and practical access to lactone precursor 3 by an asymmetric hetero Diels-Alder reaction as the key step and its subsequent transformation into a suitable building block 4. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1263 / 1265
页数:3
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