Fern constituents: Dryocrassy formate, sitostanyl formate and 12 α-hydroxyfern-9(11)-ene from Cyathea podophylla

Abstract

Dryocrassyl formate, sitostanyl formate, and 12 α-hydroxyfern-9(11)- ene were isolated from the fresh fronds of Cyathea podophylla. Their structures were elucidated by spectroscopic techniques and synthesis. Ten known triterpenoids, three derivatives of phytol, a stanol, and β-tocopherol were also identified from this fern. © 2003 Pharmaceutical Society of Japan.