Eisai Company, Limited

Hirotoshi Numata

Shigeki Hibi

Katsuya Tagami

Yasushi Okamoto

Tetsuya Kawahara

Masanobu Shinoda

Naoki Kobayashi

Isao Yamatsu

Takashi Yamanaka

Manabu Murakami

Takashi Inoue

Kiyoshi Oketani

Koukichi Harada

Koichi Abe

Kaname Miyamoto

A benzothiazole derivative or a pharmacologically acceptable salt thereof of the following formula, as defined in the claims, which is useful as a preventive or therapeutic agent for diseases on which functions of suppressing leukotrienes and thromboxanes production are effective: ##STR1##

Benzothiazole compounds which are substituted by pyridymethyl

A benzothiazole derivative or a pharmacologically acceptable salt thereof which is useful as a preventive or therapeutic agent for diseases on which functions of suppressing leukotrienes and thromboxanes production are effective. A benzothiazole derivative represented by the following general formula (I): ##STR1##

Pyridyl substituted benzothiazole compounds which have useful

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

Quinone derivatives

A benzothiazole derivative or a pharmacologically acceptable salt thereof which is useful as a preventive or therapeutic agent for diseases on which functions of suppressing leukotrienes and thromboxanes production are effective. A benzothiazole derivative represented by the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.3 are either the same or different and represents a hydrogen atom, a lower alkyl group or a lower alkoxy group; R.sup.4 represents a group represented by the formula --(CH.sub.x)--.sub.q wherein q is a integer of from 1 to 4;

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Ibaraki, Japan

Hirotoshi Numata