2,6-di-O-methyl-beta-cyclodextrin complexes of compounds of the formula (1a) ##STR1## wherein R.sup.2' stands for C.sub.1 to C.sub.12 alkyl or a group of the formula ##STR2## in which R.sup.11 is C.sub.1 to C.sub.4 alkyl; R.sup.12 is hydrogen or C.sub.1 to C.sub.4 alkyl; n is 0 or 1; p is 1 to 4; r is 1 to 4; and R.sup.3' and R.sup.4' are each C.sub.1 to C.sub.4 alkyl, or pharmaceutically salts thereof are disclosed, having analgesic activity.
公开了化合物(1a)的2,6-二-O-甲基-β-
环糊精络合物##STR1##其中R.sup.2'代表C.sub.1到C.sub.12烷基或公式##STR2##中R.sup.11为C.sub.1到C.sub.4烷基; R.sup.12为氢或C.sub.1到C.sub.4烷基; n为0或1; p为1到4; r为1到4;和R.sup.3'和R.sup.4'均为C.sub.1到C.sub.4烷基,或其药学盐,具有镇痛活性。