Structure Determination of A Cucurbitacin Glycoside Extracted from Cucurbita pepo cv Dayangua by 2D NMR
2D NMR对苦味西葫芦果实中的一个三萜皂苷进行结构解析

Atriterpene saponin was extracted fromtraditional Chinese medicineCucurbita pepo cv Day-angua.Its structure was determined by 2D NMR.Complete assignment of the1H and13C chemical shifts for the compound was obtained.The structure was elucidated to be cucurbitacin E 2-O-b-D-gluco-side.