The structure of chalybaeizanic acid and quaesitic acid, two new lichen depsidones related to salazinic acid

被引：12

作者：

Elix, JA ^{[1
]}

Wardlaw, JH ^{[1
]}

机构：

[1] Australian Natl Univ, The Faculties, Dept Chem, Canberra, ACT 0200, Australia

来源：

AUSTRALIAN JOURNAL OF CHEMISTRY | 1999年 / 52卷 / 07期

关键词：

D O I：

10.1071/CH99056

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

The depsidones chalybaeizanic acid (1,4,10-trihydroxy-8-methyl-3,7-dioxo-1,3-dihydro-7H-isobenzofuro[4,5-b][1,4]benzodioxepin-5,11-dicarbaldehyde) (4) and quaesitic acid (11-formyl-1,4,10-trihydroxy-8-methyl-3,7-dioxo-1,3-dihydro-7H-isobenzofuro[4,5-b][1,4]benzodioxepin-5-methyl hydrogen fumarate) (5) have been isolated from the lichens Xanthoparmelia amphixanthoides and Hypotrachyna quaesita respectively, and their structures determined by a combination of spectroscopic evidence, partial synthesis, derivatization or degradation reactions.

引用

页码：713 / 715

页数：3

共 13 条

[1]

ASAHINA Y, 1934, BER DTSCH CHEM GES, V67, P963

[2]

IMPROVED CONDITIONS AND NEW DATA FOR IDENTIFICATION OF LICHEN PRODUCTS BY A STANDARDIZED THIN-LAYER CHROMATOGRAPHIC METHOD [J].