论文部分内容阅读
Three new cucurbitacins were isolated from the BuOH extract of the rhizomes of Hemsleya lijiangensis. Their structures were elucidated as 23, 24 -dihydro cucurbitacin F-16, 25-diacetate(1), 23, 24-dihydro cucurbitacin F-16, 25-diacetate-2-O-β-D glucopyranoside (2), 23, 24-dihydro-cucurbitacin F-16-acetate(3), respectively; by spectral analyses.
Three new cucurbitacins were isolated from the BuOH extract of the rhizomes of Hemsleya lijiangensis. Their structures were elucidated as 23, 24-dihydro cucurbitacin F-16, 25- diacetate (1), 23,24-dihydro cucurbitacin F- diacetate-2-O-β-D glucopyranoside (2), 23, 24- dihydro-cucurbitacin F-16-acetate