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:
May. 17, 1994
Filed:
Feb. 16, 1993
Applicant:
Inventors:
John Y Chung, Edison, NJ (US);
David L Hughes, Old Bridge, NJ (US);
Dalian Zhao, Scotch Plains, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546185 ; 546335 ; 546232 ;
Abstract
The invention is a highly efficient synthesis for making compounds of the formula: ##STR1## wherein: R.sup.1 is a six membered saturated or unsaturated heterocyclic ring containing one or two heteroatoms wherein the heteroatoms are N; or NR.sup.6, wherein R.sup.6 is H or C.sub.1-10 alkyl;