文章基本信息

标题：Studies on the Resin Acid in the Fruits of Juniperus japonica. The Structure of an Isomeric 7-Isodextropimaric Acid
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作者：Tyunosin Ukita ; Toru Tsumita ; Nobuyuki Utsugi 等
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.