New C 21 steroidal glycosides from the roots of Cynanchum stauntonii and their protective effects on hypoxia/reoxygenation induced cardiomyocyte injury
作者:Qiao-Shi Lei、Yi-Han Zuo、Chang-Zhi Lai、Jin-Fang Luo、Shu-Wen Pang、Hua Zhou、Xin-Sheng Yao、Jin-Shan Tang
DOI:10.1016/j.cclet.2017.05.017
日期:2017.8
Abstract Phytochemical investigations from the roots of Cynanchum stauntonii led to obtain four new C 21 steroidal glycosides ( 1 – 4 ) and one known compound stauntoside F ( 5 ). Their chemical structures were characterized by sophisticated analyses of IR, HRESI-TOF-MS, 1D, and 2D-NMR data, together with chemical methods, which showed interesting 13,14:14,15-disecopregnane-type skeleton or 14,15-secopregnane-type
摘要从梧桐的根部进行植物化学研究后,获得了四种新的C 21甾体糖苷(1-4)和一种已知的化合物stauntoside F(5)。通过对IR,HRESI-TOF-MS,1D和2D-NMR数据进行精密分析以及化学方法对它们的化学结构进行了表征,这些化学方法显示出有趣的13,14:14,15-二铜庚烷型骨架或14,15-二十碳四烯烷型骨架C 21甾体糖苷。其中,化合物1被确定为glaucogenin C 3-O-β-d-吡喃葡萄糖基-(1→4)-β-d-环吡喃糖基-(1→4)-β-d -digitoxopyranosyl-(1→4) -β-d-thevetopyranoside。化合物2的特征是Hirundigenin 3- O-α-1-diginopyranosyl-(1→4)-β-d -cymaropyranosyl-(1→4)-β-d -digitoxopyranosyl-(1→4)-β-d