Abstract
Five new phenolic glycosides, cucurbitosides A—E (1—5), were isolated from the seeds of Cucurbita moschata. Their structures were elucidated as 2-(4-hydroxy)phenylethanol 4-O-(5-O-benzoyl)-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside (1), 2-(4-hydroxyphenyl)ethanol 4-O-[5-O-(4-hydroxy)benzoyl]-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside (2), 4-hydroxybenzyl alcohol 4-O-(5-O-benzoyl)-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside (3), 4-hydroxybenzyl alcohol 4-O-[5-O-(4-hydroxy)benzoyl]-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside (4) and 4-hydroxyphenyl 5-O-benzoyl-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside (5) on the basis of spectroscopic analysis and chemical evidence.
