Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
The Structure of Isousnic Acid with Reference to "Isodihydrousnic Acid" derived from Dihydrousnic Acid
HEIHACHIRO TAGUCHISHOJI SHIBATA
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Volume 18 (1970) Issue 2 Pages 374-378

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Abstract

Isousnic acid (IIIb), a structural isomer of usnic acid, was isolated from lichens of Cladonia spp. The so-called "Isodihydrousnic acid" obtained by the thermal rearrangement of dihydrousnic acid has been discussed in comparison with isodihydrousnic acid (XII) prepared by catalytic hydrogenation of isousnic acid.

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