Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Phytochemical Study on American Plants I. Two New Phenol Glucosides, together with Known Biflavones and Diterpene, from Leaves of Juniperus occidentalis HOOK.
Tsutomu NakanishiYuka InatomiHiroko MurataNaoki IidaAkira InadaFrank A. LangJin Murata
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2002 Volume 50 Issue 10 Pages 1358-1361

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Abstract

Two new phenol glucosides termed juniperosides I (1) and II (2) were isolated, together with known two biflavones, cupressuflavone and amentoflavone and a diterpene, 3β-hydroxy sandaracopimaric acid, from leaves of Juniperus occidentalis HOOK. (Cupressaceae) collected in Oregon, U.S.A., and their structures were established as (1S)- and (1R)-1-(2′-hydroxy-6′-methylphenyl)ethanol 2′-O-β-D-glucopyranosides (1, 2), respectively, on the basis of spectral, chemical, and synthetic evidence. The glycosides 1 and 2, as well as the corresponding aglycones 1a and 2a, are apparently novel types of naturally occurring compounds; to our knowledge, isolation of these types of natural phenol derivatives has only rarely been reported from the vegetable kingdom.

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© 2002 The Pharmaceutical Society of Japan
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