INVESTIGADORES
MAIER Marta Silvia
artículos
Título:
Fernene triterpenoids from the lichen Pyxine berteriana
Autor/es:
M.S. MAIER; M. L. ROSSO; A.T. FAZIO; M.T. ADLER; M.D. BERTONI
Revista:
JOURNAL OF NATURAL PRODUCTS
Editorial:
AMER CHEMICAL SOC
Referencias:
Año: 2009 vol. 72 p. 1092 - 1094
ISSN:
0163-3864
Resumen:
Two new fernene triterpenoids, fern-9(11)-en-3,19-dione (1) and 3b-acetoxyfern-9(11)-en-19-one (2), together with the known 3b-acetoxyfern-9(11)-en-19b-ol (3) and lichexanthone (4), have been isolated from the acetone extract of the lichen Pyxine berteriana. The structures of the new compounds were established on the basis of IR, extensive 1D and 2D NMR and MS analyses. Although several fern-9(11)-enes have been isolated from lichens, compounds 1 and 2 are the first examples of naturally occurring fernene triterpenoids with a carbonyl function at C-19.