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:
Oct. 01, 1991
Filed:
Feb. 08, 1990
Applicant:
Inventors:
Tatsuyoshi Tanaka, Tokushima, JP;
Yoji Sakurai, Tokushima, JP;
Hiroshi Okazaki, Tokushima, JP;
Takashi Hasegawa, Tokushima, JP;
Yoshiyasu Fukuyama, Tokushima, JP;
Assignee:
Otsuka Pharmaceutical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568 47 ; 548203 ; 548537 ; 548556 ; 564219 ; 564337 ; 568 33 ; 568 47 ; 568331 ; 568636 ; 568643 ; 568660 ; 568730 ;
Abstract
There is disclosed a biphenyl derivative of the formula (B): ##STR1## wherein R.sup.1, R.sup.3, R.sup.4, R.sup.5 and R.sup.c are as defined or its salt, a composition for nerve cell degeneration repairing or protecting agent containing a phenyl derivative selected from compounds (1) to (4) and (B) as defined, and a process for preparing a phenyl derivative contained in the composition.