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:
Aug. 06, 1996
Filed:
Mar. 30, 1995
Applicant:
Inventors:
Assignee:
Janssen Pharmaceutica N.V., Beerse, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564 87 ; 564 92 ; 564220 ; 564 97 ; 564 99 ;
Abstract
Process for preparing enantiomerically pure imidazo[4,5,1 -jk][1,4]benzodiazepin -2(1H)-thiones of formula ##STR1## starting from 2,6-dihalo-3-nitrobenzyl derivatives (II) and suitably N-protected 1,2-diaminopropanes (III) ##STR2## Novel enantiomerically pure intermediates of formula (III) and (IV) are prepared in the course of the present process.
De Knaep, Alfons. (1996). Intermediates for preparing enantiomerically pure (U.S. Patent No. 5543570). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5543570
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