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:
Mar. 15, 1994
Filed:
Nov. 19, 1992
Applicant:
Inventors:
Tadayuki Koumoto, Osaka, JP;
Hironori Hayashi, Toyonaka, JP;
Toshiya Kadowaki, Osaka, JP;
Masahiko Seto, Kobe, JP;
Toyonari Oine, Nara, JP;
Assignee:
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540491 ;
Abstract
There is disclosed a process for preparing 1,5-benzothiazepine derivatives of the formula: ##STR1## wherein R.sup.1 is a lower alkyl group, or a salt thereof which comprises subjecting a propionate derivatives of the formula: ##STR2## wherein R.sup.2 is an ester residue and R.sup.1 is the same as defined above, to intramolecular cyclization in the presence of a sulfonic acid compound of the formula: