Tetrazole derivatives, process for the preparation thereof, and anti-ulcer composition containing the same
申请人:OTSUKA PHARMACEUTICAL CO., LTD.
公开号:EP0035228A1
公开(公告)日:1981-09-09
Tetrazole derivatives of the formula:
wherein R1 is a lower alkyl, phenyl or a group of the formula: -S(O)ℓ-A-(X)m-R3, and R2 is hydrogen, a lower alkyl, phenyl or a cycloalkyl when R' is the group-S(O)ℓ-A-(X)m--R3, or R2 is a group of the formula: -B-CO-R4 when R1 is a lower alkyl or phenyl and a pharmaceutically acceptable salt thereof, which have prophylactic or therapeutic activities against peptic and/or duodenal ulcers and are useful as an anti-ulcer drug; processes for the preparation of the tetrazole derivatives; and pharmaceutical composition containing said tetrazole derivatives.