Tupichinins B–D, three new spirostanol saponins from <i>Tupistra chinensis</i> rhizomes
作者:Li-Mei Wei、Yang-Chang Wu、Chin-Chau Chen、Pei-Wen Hsieh、Wen-Bin Pan
DOI:10.1080/14786419.2013.838240
日期:2014.1.17
Three newspirostanolsaponins were isolated from the EtOAc fraction of methanol extract from Tupistra chinensis rhizomes. Based on the detailed analysis of their 1D and 2D NMR spectra and chemical evidence, their structures were determined as 1β-O-acetyl-spirost-5,25(27)-dien-3α-yl-O-β-d-glucopyranoside (1), (25S)-1β,2β,5β-trihydroxy-spirostane-3β-yl-O-β-d-glucopyranoside (2) and (25S)-1β,2β-dihy