Efficient asymmetric synthesis of (R)-3-hydroxy- and alkanoyloxytetradecanoic acids and method for the determination of enantiomeric purity

被引:29
|
作者
Keegan, DS [1 ]
Hagen, SR [1 ]
Johnson, DA [1 ]
机构
[1] RIBI IMMUNOCHEM RES INC, DIV PHARMACEUT DISCOVERY, HAMILTON, MT 59840 USA
关键词
D O I
10.1016/S0957-4166(96)00464-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
An efficient synthesis of the (R)-3-hydroxy- and alkanoyloxytetradecanoic acid components of bacterial lipid A has been achieved using a Ru(II)-Binap-catalyzed low-pressure hydrogenation in the key step. The enantiomeric purity of p-bromophenacyl ester intermediate 4 could be assessed directly by chiral HPLC-obviating separate derivatization steps and/or chiral NMR shift studies. Copyright (C) 1996 Elsevier Science Ltd.
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页码:3559 / 3564
页数:6
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