ALPHA-ADRENOLYTIC PROPERTIES OF APOGALANTHAMINE AND AZAPETINE ANALOGS
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概要
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Selectivities were examined between α_1 and α_2-adrenolytic activities of two apogalanthamine analogs (dibenzazocine derivatives), 6-methyl-5,6,7,8-tetrahydrodibenz [c, e]-azocine (DA-VIII-Me) and its N-allyl analog (DA-VIII-allyl), and two dibenzazepine derivatives, azapetine (DA-VII-allyl) and its N-methyl analog (DA-VII-Me). The α^(adrenolytic activites were evaluated as inhibitory effects against the response to norepinephrine of isolated was deferens and anococcygeus muscle of rats. The pA_2 values for DA-VIII-Me, DA-VIII-allyl, DA-VII-Me and azapetine on the isolated rat vas deferens were 7.32,7.76. 6.61 and 7.78 respectively, which were similar to those on the anococcygeus muscle. The α_2-adrenolytic activities of these compounds against the twitch-inhibitory response to clonidine in transmurally stimulated rat vas deferens and guinea-pig ileum were less potent than those against the above α_1-adrenoceptors. In addition, their inhibitory activities on the aggregation of human platelets induced by norepinephrine were weaker than those of phentolamine and yohimbine. These results indicate that the apogalanthamine and azapetine analogs tested are more selective in blocking α_1-adrenoceptors than α_2-adrenoceptors.
- 公益社団法人日本薬学会の論文
著者
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ISHIDA Yukio
Department of Mechanical Science and Engineering, School of Engineering, Nagoya University
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Ishida Yukio
Faculty Of Pharmaceutical Sciences The University Of Tokushima:faculty Of Home Economics Shikoku Wom
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KIMURA Yukio
Tokushima Research Institute, Otsuka Pharmaceutical Co. Ltd.
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SASAKI Yuji
Department of Physics, University of Notre Dame
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Ishida Y
Department Of Chemical Pharmacology Faculty Of Pharmaceutical Sciences University Of Tokushima
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WATANABE KOZO
Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd.
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Sasaki Yuji
Department Of Analytical Science Institute For Materials Resarch Tohoku Univetsity
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Kimura Y
Towada Urologic Hospital Towada Jpn
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Watanabe K
Kureha Biomedical Research Lab. Tokyo Jpn
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Kimura Yukio
Tokushima Research Institute Otsuka Pharmaceutical Co. Ltd.
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Ishida Yukio
Department Of Chemical Pharmacology:faculty Of Pharmaceutical Sciences University Of Tokushima
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Watanabe Kozo
Tokushima Research Institute Otsuka Pharmaceutical Co. Ltd.
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ISHIDA Yukio
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokushima
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ISHIDA YUKIO
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences University of Tokushima
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