Structures of New Phenolic Glycosides from the Seeds of Cucurbita Moschata

A new phenolic glycoside and three known compounds were isolated from the seeds of Cucurbita moschata. The structures of the new compound was elucidated as phenylcarbinyl 5-O-(4-hydroxy)benzoyl-beta-D-apiofuranosyl (1-->2)-beta-D-glucopyranoside on the basis of spectroscopic analysis and chemical evidence. Three known compounds were identified as 1-O-benzyl[5-O-benzoyl-beta-D-apiofuranosyl(1-->2)]-beta-D-glucopyranoside 2, cucurbitosides C 3 and A 4, by comparison of the spectral data with reported data. Compound 2 was isolated from this plant for the first time.