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  • 标题:Studies on the Resin Acid in the Fruits of Juniperus japonica. The Structure of an Isomeric 7-Isodextropimaric Acid
  • 本地全文:下载
  • 作者:Tyunosin Ukita ; Toru Tsumita ; Nobuyuki Utsugi
  • 期刊名称:Chemical and Pharmaceutical Bulletin
  • 印刷版ISSN:0009-2363
  • 电子版ISSN:1347-5223
  • 出版年度:1955
  • 卷号:3
  • 期号:6
  • 页码:441-446
  • DOI:10.1248/cpb1953.3.441
  • 出版社:The Pharmaceutical Society of Japan
  • 摘要:By successive oxidation with selenium dioxide and sodium dichromate followed by introdution of a hydroxymethylene group, a partial structure -C=C-CH2-CH2- was given for a diterpenic acid C20H30O2 (II) which was isolated from the fruits of Japanese juniper. Further, as the acid (II) gave tetrahydro-7-isodextropimaric acid after consumption of two moles of hydrogen, the structure of (II) was concluded to be represented by △13, 14-7-isodextropimaric acid. The structure of a doubly unsaturated compound obtainable from a hydroxymethyl ester (VI), an oxidation product of (V), was proposed to be △5, 13 : 9, 14-7-isodextropimaric acid.
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