Dainippon Pharmaceutical Company, Limited

Hiroyuki Mizuta

Haruki Nishimura

Toshiaki Kadokawa

Katsuyoshi Kawashima

Shunsuke Naruto

Novel 2-cyclic amino-2-(1,2-benzisoxazol-3-yl)acetic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen or a halogen atom, R.sub.2 is a lower alkyl group, Am is a 5- to 9-membered saturated cyclic amino group which may be substituted by a lower alkyl group, and the group: ##STR2## binds to the piperidine moiety at 3- or 4-position of the latter, and their pharmaceutically acceptable acid addition salts and quaternary ammonium salts, process for their preparation, and pharmaceutical compositions containing these compounds. They have potent anticholinergic antispasmodic activity, while they are weak in side effects such as mydriasis, inhibition of salivary secretion and tachycardia.

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Nishinomiya, Japan

Hiroyuki Mizuta