Sughrue, Mion, Zinn, Macpeak & Seas
Benzoheterocyclic compounds
 Novel benzoheterocyclic compounds of the formula: ##STR1## wherein R.sup.1 is H, halogen, OH, etc,; R.sup.2 is H, alkyl, halogen or alkoxy; R.sup.3 is phenyl-alkanoylamino, or ##STR2## R.sup.4 is H, --NR.sup.6 R.sup.7, alkenyloxy, HO-alkyl, --O--CO--A--NR.sup.8 R.sup.9, etc.; R.sup.5 is H, OH, etc., or a salt thereof, which have excellent vasopressin antagonistic activities and useful as vasodilator, hypotensive agent, water diuretics, platelet agglutination inhibitor, and a vasopressin antagonistic composition containing the compound as the active ingredient. 
Otsuka Pharmaceutical Co., Ltd.
A C C C A C A C A A C A A C C A A A
A61P C07D C07D C07D A61P C07D A61P C07D A61P A61P C07D A61P A61P C07D C07D A61P A61P A61P
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Hajime Kazuyoshi Michiaki Kenji Michinori Hidenori Yoichi Hiroshi Kazumi
Komatsu Kitano Tominaga Nakaya Tanaka Ogawa Yabuuchi Yamashita Kondo