New diterpenoids from the Caribbean Gorgonian Eunicea calyculata. Photochemical interconversion of the cembrene and cubitene skeletons
作者:Jongheon Shin、William Fenical
DOI:10.1021/jo00003a053
日期:1991.2
Seven new diterpenoids of the cubitane and cembrane classes (1-7) have been isolated from the Caribbean sea whip Eunicea calyculata (Ellis and Solander). The structures of these new compounds were assigned on the basis of spectral studies and an interconversion of the major metabolites via a photochemically induced 1,3-acyl migration. The first transformation of a cembrene to a cubitene diterpenoid is reported.