abstract |
Certain novel benzothiazoles and benzoxazoles, for example, 2- (piperazin-1-yl) benzothiazoles and 2- (piperazin-1-yl) benzoxazoles, optionally substituted at positions 3 and / or 4 of the piperazine rings, of the general formula (1): which have histamine H3 antagonistic activity, can be used in pharmaceutical compositions. |