A compound of formula I, including optical isomers thereof, ##STR1## wherein X represents --SO.sub.2 NH-- or --NHSO.sub.2 --, p, q and r independently represent 2 or 3, Y represents thienyl optionally substituted by alkyl or halogen, or phenylthio- or phenyl optionally substituted by akyl or halogen, and each R independently represents H or alkyl, and pharmaceutically acceptable salts, esters and amides thereof.
化合物I的式子,包括其光学异构体,##STR1## 其中X代表--SO.sub.2 NH--或--NHSO.sub.2 --,p、q和r独立地代表2或3,Y代表
噻吩,可选地被烷基或卤素取代,或苯
硫醚或苯,可选地被烷基或卤素取代,每个R独立地代表H或烷基,以及其药学上可接受的盐、酯和酰胺。