The characteristic
secondary metabolite of
S. ramulosum is
atranorin, a
depside. During the extraction phase, atranorin suffer an
alcoholysis reaction, producing methyl/ethyl haemmatomate and methyl ß-orcinol
carboxylate. Has been identified in New Zealand and in east central Africa, perlatolic acid,
anziaic acid and methyl haemmatomate. Methyl haemmatomate has in-vitro antifungical activity. Huneck in Chiloe, Chile, identify atranorin, perlatolic acid and lobaric acid. Also, in Pongo, Bolivia, Vila et al. aislate the polyol galactitol and 1,3,7-trimethylguanine, an unusual alkaloid. Carbohydrates have been found.. A linear (1→3) linked ß-D-glucan, ==References==