Three new fatty acid esters from the mushroom Boletus pseudocalopus
A bioassay-guided fractionation and chemical investigation of a MeOH extract of the Korean wild mushroom Boletus pseudocalopus resulted in the identification of three new fatty acid esters, named calopusins A-C (1-3), along with two known fatty acid methyl esters (4-5). These new compounds are structurally unique fatty acid esters with a 2,3-butanediol moiety. Their structures were elucidated through 1D- and 2D-NMR spectroscopic data and GC-MS analysis as well as a modified Mosher's method. The new compounds 1-3 showed significant inhibitory activity against the proliferation of the tested cancer cell lines with IC50 values in the range 2.77-12.51 μM. AOCS 2011.
Kim, Ki Hyun,Choi, Sang Un,Lee, Kang Ro
experimental part
p. 593 - 599
(2012/09/10)
Pheromones via organoboranes: Part IV - Synthesis of (Z)-9-tricosene (Muscalure)
Synthesis of (Z)-9-tricosene (muscalure) (9) is reported starting from oleyl alcohol by two carbon homologation via dianion of phenoxyacetic acid followed by reduction (LAH), oxidation (PCC) and Grignard reaction.