Talapatra, Sunil K.; Basu, Dipankar; Deb, Tullika, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1985, vol. 24, p. 29 - 34
Total Synthesis and Cytotoxicity of (+)- and (−)-Goniodiol and 6-<i>epi</i>-Goniodiol. Construction of α,β-Unsaturated Lactones by Ring-Closing Metathesis
(+)-Goniodiol, a potent and selective cytotoxin, and (-)-6-epi-goniodiol, as well as their enantiomers, have been synthesized starting from cinnamyl alcohol. The key steps of the synthesis were Sharpless asymmetric epoxidation and cyclization of an acrylate derivative using ring-closing metathesis reaction. The cytotoxicity of both enantiomers of goniodiol and 6-epi-goniodiol against HL-60 cells was
A Morita–Baylis–Hillman adduct allows the diastereoselective synthesis of styryl lactones
作者:Paulo H.S. Paioti、Fernando Coelho
DOI:10.1016/j.tetlet.2011.09.044
日期:2011.11
for the total syntheses of (±)-Leiocarpin A and (±)-Goniodiol. These biologically active styryl lactones were obtained from a common intermediate, prepared in five steps and 40% overall yield, using a simple synthetic sequence starting from a Morita–Baylis–Hillman adduct. The total syntheses of these styryl lactones were accomplished in nine steps. This is the first report on the totalsynthesis of this
All stereoisomers of goniodiol were synthesized from yeast-reduction products. The C-6 chiral centers were converted from the chiral centers of the yeast-reduction products. Stereoselective conversion of the alkene, which had been prepared from the yeast-reduction product, to glycol constructed the C-7 and C-8 stereochemistry. (+)-Goniodiol and 7-epi-(+)-goniodiol showed the highest antibacterial activity (MIC, 3.1 mm) against Yersinia intermedia.