| 摘要 |
A method of achieving a muscle-relaxing effect in a patient comprises administering to a patient in which a muscle relaxing effect is desired an amount effective to achieve a muscle-relaxing effect of a compound of the formula <IMAGE> wherein R is H, or C1-7 straight or branched chain alkyl; R1 is H, C1-7 straight or branched chain alkyl, allyl or phenyl; R2 is phenyl, phenyl monosubstituted with F, Cl, C1-4 straight or branched chain alkyl or phenyl disubstituted in the 2- and 4-positions with Cl or C1-4 straight or branched chain alkyl; and R3 is H or C1-4 straight or branched chain alkyl, with the proviso that when R3 is straight or branched chain alkyl, R2 is unsubstituted phenyl; or a pharmaceutically acceptable acid addition salt thereof.
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