Document Type and Number:
Japanese Patent JPH0567140
Kind Code:
B2
Abstract:
The invention relates to novel sulfonic acid esters of formula I (I) wherein R1 is C5-C6cycloalkyl which is unsubstituted or substituted by C1-C7alkyl, unsubstituted or substituted phenyl, R2 is C1-C7alkyl, R3 is phenyl which is substituted by halogen or nitro, and the asterisk denotes a carbon atom that is either present in the preponderant number of molecules in the S configuration or in the preponderant number of molecules in the R configuration. These compounds can be prepared by enantio-selective reduction of 4-R1-substituted alpha -oxobutyric acid compounds and subsequent conversion of the resultant alpha -hydroxy group into the -OSO2-R3 group. The compounds of formula I are suitable intermediates for the preparation of ACE inhibitors or precursors thereof.
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Inventors:
HANSUURURITSUHI BURAZAA
HANSUUPEETAA YARETSUTO
GOTSUTOFURIITO ZEEDERUMAIAA
HANSUUPEETAA YARETSUTO
GOTSUTOFURIITO ZEEDERUMAIAA
Application Number:
JP13509586A
Publication Date:
September 24, 1993
Filing Date:
June 12, 1986
Export Citation:
Assignee:
CIBA GEIGY
International Classes:
A61K31/55; A61P9/12; A61P21/00; A61P25/18; A61P43/00; B01J31/00; B01J31/02; B01J31/28; C07D223/16; C07B43/04; C07B53/00; C07B55/00; C07B61/00; C07C67/00; C07C67/31; C07C69/675; C07C227/00; C07C227/08; C07C227/16; C07C227/32; C07C229/02; C07C229/08; C07C271/42; C07C301/00; C07C303/28; C07C309/63; C07C309/72; C07C309/73; C07K5/078; (IPC1-7): C07C309/73; B01J31/28; C07C303/28; C07D223/16
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