A Total of Eight Novel Steroidal Glycosides Based on Spirostan, Furostan, Pseudofurostan, and Cholestane from the Leaves of Cestrum newellii
作者:Tomoki Iguchi、Naoki Takahashi、Yoshihiro Mimaki
DOI:10.3390/molecules25194462
日期:——
steroidal glycosides (1–8), which were classified into three spirostanol glycosides (1–3), two furostanol glycosides (4 and 5), two pseudofurostanol glycosides (6 and 7), and one cholestane glycoside (8). In addition, three known cholestane glycosides (9–11) were isolated and identified. The structures of the new compounds were determined based on spectroscopic data and chemical transformations. Compounds
以前,从 Cestrum 物种的植物中报道了各种甾体糖苷。然而,尚未对 Cestrum newellii 进行植物化学研究。对 C. newellii 叶子的系统植物化学研究导致分离出八种新型甾体糖苷 (1-8),它们被分为三种螺甾醇糖苷 (1-3)、两种呋甾醇糖苷 (4 和 5)、两种假呋喃甾醇糖苷苷(6 和 7)和一种胆甾烷苷(8)。此外,还分离并鉴定了三种已知的胆甾烷苷 (9-11)。新化合物的结构是根据光谱数据和化学转化确定的。化合物1和2是在苷元部分的C-2、C-3、C-12和C-24处具有羟基的螺甾醇糖苷。虽然 C. newellii 被认为是一种有毒植物,