Dainippon Sumitomo Pharma Co., Ltd.

Kotaro Hirota

Yoshihide Ueno

Takashi Umezome

Nobuyuki Sawada

Tsuyoshi Noguchi

The compound of the formula (I): wherein W is a group of the following formula (VIII) binding to any possible position on the Q: Q is, together with W, a group of the formula: &#x2014;C(W)&#x2550;C(R)&#x2014;N(R)&#x2014;, etc.; Ris H or optionally substituted lower alkyl; R, R, R, and Rare independently H or optionally substituted lower alkyl; Ris optionally substituted lower alkyl, etc.; Ris H, etc.; Ris H, etc.; Ar is phenyl, etc., or a pharmaceutically acceptable salt thereof, where these compounds exhibiting &#x3b2;3-adrenoceptor-stimulating activity and being useful as a medicament for treatment of obesity, etc.

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Toyonaka, Japan

Kotaro Hirota