New Cembranoid Diterpenes and a Geranylgeraniol Derivative from the Common Caribbean Sea Whip <i>Eunicea succinea</i>
作者:Abimael D. Rodríguez、Ana L. Acosta
DOI:10.1021/np970373m
日期:1997.11.1
A recent collection and extraction of the common Caribbean sea whip Eunicea succinea from Puerto Rico has produced four previously undescribed representatives of the cembrane family of diterpenes (2, 3, 4, and 6). A new geranylgeraniol derivative, 8, was also isolated as a minor constituent; The chemical structures of the new compounds were carefully established by spectroscopic and chemical methods in addition to detailed NMR spectral comparisons with known cembranoid models from Eunicea.
Asymmetric Total Synthesis of Pseudoplexaurol and 14-Deoxycrassin, two Antitumor Marine Cembrane Diterpenoids
作者:Yulin Li、Zuosheng Liu、Lizeng Peng、Weidong Z. Li
DOI:10.1055/s-2003-42077
日期:——
The first asymmetric total synthesis of two naturally occurring antitumor pseudoplexaurol and 14-deoxycrassin were achieved via two convergent synthetic sequences featured a chiral pool protocol to implement C-1 stereogenic center and Ti(0)-mediated cyclization leading to cembrane ring.