Stevens, Davis, Miller & Mosher
Spiro-4'-piperidine compounds and their pharmaceutical compositions
 Spiro amine derivatives having excellent antihypertensive activity and central nervous system depressant activity, and represented by the formula: ##STR1## and their preparation and use. 
Sumitomo Chemical Company, Limited
A C A
A61P C07D A61P
inventional inventional inventional
Keiichi Hisao Junki Kikuo
Ono Yamamoto Katsube Sasajima