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US 4,001,223 AGranted
Adamantane-piperazine derivatives
AssigneesIdemitsu Kosan Co., Ltd., Nippon Chemiphar Co., Ltd.
InventorsMichio Sugimoto, Fumitada Yamamoto, Kosaku Honna, Konomu Kurisaki, Hirozo Sugahara, Kiyoshi Watanabe, Yasuo Fujimoto, Syoji Ryu
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Abstract
Adamantane derivatives of this invention are represented by the formula ##STR1## wherein R.sub.1 is ##STR2## or --CH.sub.2 -- and R.sub.2 is ##STR3## or --CH.sub.2 CH=CH--. Said derivatives are cerebral vasodilators or intermediates for the same.
Claims5
Adamantane derivatives represented by the formula ##STR41## wherein R.sub.1 is ##STR42## or --CH.sub.2 -- and R.sub.2 is ##STR43## or --CH.sub.2 -- CH=CH--.
Dependencies are inferred from the claim text.