Synthesis and determination of the absolute configuration of (-)-(5R,6Z)-dendrolasin-5-acetate from the nudibranch Hypselodoris jacksoni.

ABSTRACT: A small sample of (-)-(5R,6Z)-dendrolasin-5-acetate, which was fully characterized by 2D NMR studies, was isolated from the nudibranch Hypselodoris jacksoni, along with the sesquiterpenes (+)-agassizin, (-)-furodysinin, (-)-euryfuran, (-)-dehydroherbadysidolide and (+)-pallescensone. A synthetic sample ([α]D -8.7) of the new metabolite was prepared by [1,2]-Wittig rearrangement of a geranylfuryl ether followed by acetylation of purified alcohol isomers. The absolute configuration at C-5 was established as R by the analysis of MPA ester derivatives of (Z)-5-hydroxydendrolasin obtained by preparative enantioselective HPLC.

SUBMITTER: Mudianta IW 

PROVIDER: S-EPMC3896254 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature