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:
Nov. 08, 1977
Filed:
Sep. 22, 1976
Applicant:
Inventors:
Shizumasa Kijima, Tokyo, JA;
Isao Yamatu, Tokyo, JA;
Kimio Hamamura, Kashiwa, JA;
Norio Minami, Kawasaki, JA;
Youji Yamagishi, Tokyo, JA;
Yuichi Inai, Tokyo, JA;
Assignee:
Eisai Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
2604 / ;
Abstract
2,3-DIMETHOXY-5-METHYL-6-SUBSTITUTED-1,4-BENZOQUINONE HAVING THE FORMULA: ##STR1## in which S is an integer of 0 to 11 and A and B stand for hydrogen or may form a direct bond, Is prepared by reacting boric acid ester of 2,3-dimethoxy-5-methyl-1,4-benzohydroquinone with prenol or isoprenol having the above group R and subsequently reacting the resulting borate with a mild oxidant. The compound is useful as coenzyme Q and has various clinical effects.