Culberson C.F. & Dibben M.J.
(1972):
2-O-Methylperlatolic and 2'-O-methylperlatolic acids: two new lichen depsides from Pertusaria,
Bryologist,
75: 362-365
Two new lichen depsides, 2-O-methylperlatolic acid and 2'-O-methylperlatolic
acid, were found in Pertusaria tuberculifera Nyl. and P.
globularis (Ach.) Tuck. respectively by hydrolysis and thin-layer chromatography
of microextracts. The related compounds perlatolic acid, stenosporic acid, and
confluentic acid also occur in the genus. These substances and the new depsides
are biogenetically related to picrolichenic acid, an unusual depsone apparently
restricted to Pertusaria. 2'-O-Methylperlatolic …
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