A Cytotoxic Sesquiterpene Caffeate from the Liverwort <i>Bazzania </i><i>n</i><i>ovae-zelandiae</i>
作者:Elaine J. Burgess、Lesley Larsen、Nigel B. Perry
DOI:10.1021/np990492x
日期:2000.4.1
Extracts of the liverwort Bazzania novae-zelandiae were cytotoxic, with selective activity against human tumor cell lines. Bioactivity-directed isolation work showed that the new compound naviculyl caffeate (1) was the main cytotoxin. This structure was confirmed by synthesis from the co-occurring sesquiterpene naviculol (2).
Abstract A new pinguisane-type sesquiterpene, naviculol, a new striatane-type sesquiterpene, striatenone, and a new phytane-type diterpene lactone, naviculide have been isolated from the American liverwort, Porella navicularis together with the previously known norpinguisone, norpinguisone methyl ester and perrottetianal, and their structures established by NMR experiments and some chemical transformations