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:
Jul. 12, 1994
Filed:
Feb. 25, 1992
Yasushi Okamoto, Ibaraki, JP;
Katsuya Tagami, Ibaraki, JP;
Shigeki Hibi, Ibaraki, JP;
Hirotoshi Numata, Ibaraki, JP;
Tetsuya Kawahara, Ibaraki, JP;
Naoki Kobayashi, Ibaraki, JP;
Masanobu Shinoda, Ibaraki, JP;
Koukichi Harada, Ibaraki, JP;
Kaname Miyamoto, Ibaraki, JP;
Koichi Abe, Ibaraki, JP;
Eisai Co., Ltd., Tokyo, JP;
Abstract
The present invention is a quinone derivative which exhibits excellent therapeutic activity represented by the general formula (I) or a pharmacologically acceptable salt thereof: ##STR1## wherein A stands for a group represented by the formula: ##STR2## (wherein R.sup.3, R.sup.4 and R.sup.5 is the same or different from each other and each stand for a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, an alkoxyalkyl group, an alkoxyalkoxy group, a cycloalkylalkoxy group, a thiol group or a thioalkyl group, with the proviso that R.sup.3 and R.sup.4 are each a lower alkoxy group