The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1993
Filed:
Mar. 21, 1991
Applicant:
Inventors:
Norman H Dyson, Palo Alto, CA (US);
John O Gardner, Los Altos, CA (US);
John C Rohloff, San Mateo, CA (US);
Assignee:
Syntex (U.S.A.) Inc., Palo Alto, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 48 ; 546 70 ; 562401 ; 562402 ;
Abstract
The invention provides a process for preparing single enantiomers of compounds represented by the formula: ##STR1## and chiral acid addition salts thereof; wherein: X and Y are independently hydrogen; lower alkyl; lower alkoxy; or halo; or X and Y taken together is methylenedioxy or ethylene-1,2-dioxy; which includes reduction of a compound represented by the formula: ##STR2## to give a mixture of stereoisomers represented by the formula: ##STR3## wherein each wavy line independently represents a bond in either the .alpha. or .beta. position;