XANTHONES OF GENTIANACEAE .I. FRASERA CAROLINIENSIS WALT

被引：69

作者：

STOUT, GH

BALKENHOL, WJ

机构：

[1] Department of Chemistry, University of Washington, Seattle

来源：

TETRAHEDRON | 1969年 / 25卷 / 09期

关键词：

D O I：

10.1016/S0040-4020(01)82816-7

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The root of Frasera caroliniensis Walt. has been shown to contain 1-hydroxy-2,3,4,7-tetramethoxyanthone (1), 1-hydroxy-2,3,4,5-tetramethoxyxanthone (6), 1-hydroxy-2,3,7-trimethoxyxanthone (9), 1-hydroxy-2,3,5-trimethoxyxanthone (11), swerchirin (15), a swerchirin glycoside (16), 1,3-dihydroxy-4,5-dimethoxyxanthone (18), and a compound that yields 1,2,3,5,8-pentamethoxyxanthone (19) on methylation. The new xanthones have been synthesized by a general method from suitable benzophenone precursors by elimination of a OMe group under strongly basic conditions. This method has also been used to prepare 1,2,3,4,8-pentamethoxyxanthone and 1,3,4,8-tetramethoxyxanthone. © 1969.

引用

页码：1947 / +

页数：1

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