ent-Isopimarane-type diterpenoids from the New Zealand liverwort Trichocolea mollissima
摘要:
Two ent-isopimarane-tvpe diterpenoids were isolated from the New Zealand liverwort Trichocolea mollissima (Hook. f. and Tayl.) Gott., together with a known 1alpha-hydroxy-ent-sandaracopimara-8(14),15-diene. Their absolute structures have been established by modified Mosher's method, X-ray crystallography and by analyses of their CD spectra. (C) 2003 Elsevier Ltd. All rights reserved.