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

John A. Elix; Judith H. Wardlaw

doi:10.1071/ch99056

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

John A. Elix^*, Judith H. Wardlaw

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	x18-x19
Journal	Australian Journal of Chemistry
Volume	52
Issue number	7
DOIs	https://doi.org/10.1071/ch99056
Publication status	Published - 1999

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

abstract = "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.",

author = "Elix, \{John A.\} and Wardlaw, \{Judith H.\}",

year = "1999",

doi = "10.1071/ch99056",

language = "English",

volume = "52",

pages = "x18--x19",

journal = "Australian Journal of Chemistry",

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TY - JOUR

T1 - The structure of chalybaeizanic acid and quaesitic acid, two new lichen depsidones related to salazinic acid

AU - Elix, John A.

AU - Wardlaw, Judith H.

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/4143143091

U2 - 10.1071/ch99056

DO - 10.1071/ch99056

M3 - Article

SN - 0004-9425

VL - 52

SP - x18-x19

JO - Australian Journal of Chemistry

JF - Australian Journal of Chemistry

IS - 7

ER -

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

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