Chugai Seiyaku Kabushiki Kaisha

Tanaka Sadao

Minoru Shindo

Tamotsu Yamazaki

Yasuhiro Ohba

Shun-Ichi Hata

Kazushige Sakai

Yugo Ikeda

Yasuyuki Shiraki

Matsunaga Isao

Fujimura Yasuo

Pyrazoloindazole derivatives of the formula: ##STR1## [wherein R.sub.1 is a cyano group, carboxy group, a lower alkoxycarbonyl group or a group ##STR2## (wherein R.sub.2 and R.sub.3 are each a hydrogen atom, a lower alkyl group, a phenyl group which may have a substituent or when taken together with a nitrogen atom, form a heterocyclic ring); X.sup..crclbar. is a counter ion], a process for preparing the same and a pharamaceutical composition containing the same are disclosed. The compounds of the formula above have bronchodilating action and are useful as a medicine.

Pyrazoloindazole derivatives and pharmaceutical composition containing

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Tokyo, Japan

Tanaka Sadao