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:
May. 30, 1989
Filed:
Aug. 28, 1987
Shuhei Kabota, Upper Darby, PA (US);
Kunikazu Hiraga, Osaka, JP;
Keisuke Nakayama, Ichikawa, JP;
Matazaemon Uchida, Kawachinagano, JP;
Kuniaki Taninaka, Neyagawa, JP;
Nihon Nohyaku Co., Ltd., Tokyo, JP;
Abstract
This invention relates to a malonic acid derivative represented by the general formula (I) ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, represents hydrogen atom; C.sub.1 -C.sub.12 alkyl group; C.sub.1 -C.sub.8 alkyl group substituted with C.sub.1 -C.sub.5 alkoxy group, a tetrahydrofuryl group, a phenyl group or a phenyl group substituted with 1 to 3 groups selected from the group consisting of halogen atoms, C.sub.1 -C.sub.5 alkyl groups and C.sub.1 -C.sub.5 alkoxy groups; or C.sub.2 -C.sub.6 alkenyl group; R.sup.3 and R.sup.4, which may be the same or different, represent hydrogen atom, C.sub.1 -C.sub.6 alkyl group, C.sub.2 -C.sub.6 alkenyl group, C.sub.2 -C.sub.8 alkoxyalkyl group, benzoyl group, C.sub.2 -C.sub.8 alkylcarbonyl group, C.sub.2 -C.sub.8 alkoxycarbonyl group, C.sub.1 -C.sub.4 alkylsulfonyl group or aralkyl group including benzyl group, and R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, represent hydrogen atom or C.sub.1 -C.sub.4 alkyl group, and its pharmaceutically acceptable salts, a process for producing the same and a pharmaceutical composition containing the same.