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:
Nov. 21, 1995
Filed:
Feb. 24, 1994
Applicant:
Inventors:
Hans-Jugen Federsel, Stockholm, SE;
Thomas Ho, akarp, SE;
Sten I Ramsby, Sodertalje, SE;
Peter H Strom, Veberod, SE;
Assignee:
Aktiebolaget Astra, Sodertalje, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548535 ; 548537 ;
Abstract
Disclosed are (R)- and (S)-isomers of the compounds of the Formulas II and III with at least 95% optical purity ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and represent a hydrogen atom, a lower alkyl, lower alkenyl or lower alkynyl group, a cycloalkyl group or a group (CH.sub.2).sub.m Ph, wherein m is 0-3 and Ph is a substituted or unsubstituted phenyl group. These compounds are intermediates in the stereoconservative synthesis of 1-substituted (S)- and (R)-2-aminomethylpyrrolidines.