A New Fatty Acid Glycoside Compound in Munronia Pinnata
The chemical constituents of the aerial parts of Munronia pinnata W.Theobald were investigated by using chro-matographic techniques.Ten compounds were isolated from the 95%ethanol extract of Munronia pinnata.Their structures were identified as munrofatty A(1),2-[[6-O-((2E)-6R-hydroxy-2,6-dimethyl-2,7-octadienoyl)-β-D-glucopyranosyl]oxy]-2-methylpropanoic acid(2),kaempferol-3-O-(6-O-trans-p-coumaroyl)-β-D-glucopyranoside(3),castanoside A(4),kaempferol-3-O-(6"-O-cis-pcoumaroyl)-β-D-glucopyranoside(5),aurantiamide acetate(6),blumenol A(7),grasshopper ketone(8),curcusinol(9)and loliolide(10)through detailed analyses of various technical means,including MS,IR,1D-and 2D-NMR spectroscopic methods,quantum calculation methods and other technical means.Compound 1 is a new compound,while NMR data of compound 2 are presented for the first time.Compound 1 was evaluated for cytotoxicity against HCT116,A549,HepG2,MCF7 and MDAMB cells,and was non-toxic to the tested cells at a concentration of 160 μmol/L.