Eisai Company, Limited

Ichirou Yoshida

Shinya Abe

Shigeru Souda

Katsuya Tagami

Hironori Ikuta

Kenji Hayashi

Yoshio Fukuda

Naoki Kobayashi

Makoto Kaino

Issei Ohtsuka

Yoshihito Eguchi

Hironobu Hiyoshi

Makoto Nakagawa

Akiharu Kajiwara

Atsuhiko Kubota

Atsushi Sasaki

Satoshi Nagato

Kozo Akasaka

Masanori Mizuno

Youichi Iimura

Takaki Kagaya

Mariko Komatsu

Phosphonic acid derivatives

An oxazolidone derivative represented by formula (I) which has a monoamine oxidase inhibition effect: ##STR1## {wherein A and B each represents a nitrogen atom, a sulfur atom or an oxygen atom, with the proviso than at least one of A and B must be a nitrogen atom, R.sup.1 represents a group of the formula: ##STR2## (in which n and m each represents 0 or an integer of 1 to 4, and R.sup.3 and R.sup.4 each represents a hydrogen atom, a hydroxyl group, a lower alkyl group, etc. ), a group represented by the formula: ##STR3## (in which p and q each represents 0 or an integer of 1 to 4 and X represents an oxygen atom, sulfur atom, etc.) and a group represented by the formula: ##STR4## R.sup.2 represents a hydrogen atom or a lower alkyl group}.

Oxazolidone derivative

Phosphorus-containing isoprenoid derivatives

Growing community of inventors

Ibaraki, Japan

Ichirou Yoshida