| abstract |
A compound of formula (I), including optical isomers thereof, wherein X represents -SO2NH- or -NHSO2-, p, q and r independently represent 2 or 3, Y represetns thienyl optionally substituted by alkyl or halogen, or phenylthio- or phenyl optionally substituted by alkyl or halogen, and each R independently represents H or alkyl, and pharmaceutically acceptable salts, esters and amides thereof. |