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. 18, 1995
Filed:
Nov. 08, 1993
Applicant:
Inventors:
Mark A Huffman, Scotch Plains, NJ (US);
Nobuyoshi Yasuda, Mountainside, NJ (US);
Ann E DeCamp, Scotch Plains, NJ (US);
Edward J Grabowski, Westfield, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
5142345 ; 514253 ; 514259 ; 544110 ; 544238 ; 544254 ; 544286 ;
Abstract
An asymmetric synthesis of (S)-(-)-6-chloro-4-cyclopropyl-3,4-dihydro-4-[(2-pyridyl)ethynyl]-2(1H)-qu inazolinone comprises the chiral addition of 2-pyridylacetylide to N.sup.1 -protected 6-chloro-4-cyclopropyl-2-quinazolinone followed by removal of the protecting group.