Chemical Evaluation of Betula Species in Japan. II. Constituents of Betula platyphylla var. japonica

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概要

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• The constituents of Betula platyphylla var. japonica were identified as follows : Fresh leaves : 12-O-acetyl-3-O-malonylbetulafolienetriol, 12-O-acetyl-3-O-malonylbetulafolienetriol oxide I (=papyriferic acid), 12-O-acetyl-betulafolienediolone, hydroxyhopanone, caryophyllene oxide, kaempferol 3-O-(4-O-acetyl)-α-L-rhamnopyran-oside, quercetin 3-O-(4-O-acetyl)-α-L-rhamnopyranoside. Outer bark : betulin, lupeol, betulinic acid, betulone, betulin 3-O-caffeate, oleanolic acid, oleanolic acid 3-O-acetate. Inner bark : (-)-catechin, (-)-catechin 7-O-β-D-xylopyranoside, rhododendrin (=betuloside), aceroside VII, aceroside VIII, 1,7-bis[4-hydroxyphenyl]-3-hepten-5-one, 2-hydroxy-1,7-bis[4-hydroxyphenyl]-3-hepten-5-one, acerogenin E, (3R)-3,5'-dihydroxy-4'-methoxy-3', 4"-oxo-1,7-diphenyl-1-heptene, 7α-hydroxy-β-sitosterol, 7β-hydroxy-β-sitosterol. Root bark : dammarenediol II 3-O-p-coumarate, dammarenediol II 3-O-caffeate, ocotillol II 3-O-caffeate, stigmast-4-ene-3-one. Spikes : caryo-phyllene oxide, (-)-rhododendrol (=betuligenol), 12-O-acetylbetulafolienetriol. The compounds with an asterisk are new.

• 1996-05-15

著者

• Tanaka Naoko

  武庫川女子大学 薬学部薬理学

• Yagi A

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Yagi Akiko

  Faculty Of Engineering The University Of Tokushima

• 中西 務

  Faculty Of Pharmaceutical Sciences Setsunan University

• Fuchino H

  Sci. Univ. Tokyo Tokyo Jpn

• Fuchino Hiroyuki

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Fuchino Hiroyuki

  Research Center For Medicinal Plant Resources National Institute Of Biomedical Innovation

• Tanaka N

  School Of Pharmaceutical Sciences Mukogawa Women S University

• Fuchino Hiroyuki

  Res. Center For Medicinal Plant Resources National Inst. Of Biomedical Innovation

• Satoh T

  Tokyo Univ. Sci. Tokyo Jpn

• TANAKA Nobutoshi

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• SATOH Tetsuya

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• KONISHI Soh

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• SAITSU Kohei

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• TATSUMI Tatsuya

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• Konishi Soh

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Saitsu Kohei

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Tatsumi T

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Satoh Takashi

  Yakuhan Pharmaceutical Co. Ltd.

• Tanaka Nobutoshi

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Nishimata Toyoki

  R & D Division Daiichi Sankyo Co. Ltd.

• Fuchino H

  Research Center For Medicinal Plant Resources National Institute Of Biomedical Innovation

• Tanaka Nobutoshi

  Faculty Of Engineering Hokkaido University

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