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. 03, 1993
Filed:
May. 15, 1992
Applicant:
Inventors:
Michael Schwarz, Gross-Gerau, DE;
Michael Casutt, Heppenheim, DE;
Assignee:
Merck Patent Gesellschaft mit Beschrankter Haftung, Darmstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548154 ; 560-8 ;
Abstract
The invention relates to a novel process for the preparation of imidazothiazolone derivatives of formula I, wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined in the claims, which are suitable for the preparation of D-(+)-biotin.