Reagent control in the aldol addition reaction of chiral boron enolates with chiral aldehydes. Total synthesis of (3S,4S)-statine

被引:22
作者
Gennari, C
Moresca, D
Vulpetti, A
Pain, G
机构
[1] Dip. di Chim. Organica e Industriale, Universita' di Milano, Centro CNR Sost.Org.Nat., via Venezian 21
[2] Clariant, Palazzolo Milanese (Milano)
[3] Pharmacia and Upjohn, Nerviano (Milano)
[4] Glaxo-Wellcome, Verona
关键词
D O I
10.1016/S0040-4020(97)00215-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Boron enolates bearing menthone-derived chiral ligands are capable of fair to excellent diastereocontrol in their reactions with chiral aldehydes. Thioester-derived (better than ketone derived) enolates are able to control aldol stereochemistry irrespective of the aldehyde preferences. With thioacetate-derived chiral enolates and enantiopure N,N-dibenzyl alpha-amino aldehydes, either the 3,4-anti or the 3,4-syn aldol adduct can be obtained with very high diastereoselectivity just by changing the chiral boron ligand configuration. The above procedure was used for a stereoselective total synthesis of (3S, 4S)-statine. (C) 1997 Elsevier Science Ltd.
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页码:5593 / 5608
页数:16
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