THE CHEMISTRY OF DIRINARIA AND PYXINE SPECIES (PYXINACEAE) FROM SOUTH AMERICA

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  The lichens Dirinaria aegialita, D. applanata, D. confusa var. saxicola, D. consimilis, D. leopoldii, Pyxine berteriana, P. caesiopruinosa, and P. pungens have been analysed for their secondary products. Lichexanthone, atranorin and triterpenoids are the main metabolites.