A compound of formula (I):
in which R is C₁₋₁₂ alkyl;
lower alkyl
wherein X₁ and X₂, which may be the same or different, are each hydrogen or a halogen; cyclohexylmethyl; cyclohexyl; tetrahydro-2H-pyran-1-yl-methyl; carboxy-lower alkyl or chloro-lower alkyl and each n, which may be the same or different, is 2 or 3, or a physiologically acceptable salt thereof.
式 (I) 的化合物:
其中 R 是 C₁₋₁₂ 烷基;
低级烷基
其中 X₁和 X₂可以相同或不同,各自为氢或卤素;环己基甲基;环己基;四氢-
2H-吡喃-1-基-甲基;羧基-低级烷基或
氯-低级烷基,每个 n 可以相同或不同,为 2 或 3,或其生理上可接受的盐。