Key Laboratory of Chinese Materia Medica, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin 150040, China.
Molecules. 2011 Jul 11;16(7):5833-9. doi: 10.3390/molecules16075833.
Chemical investigation of the 50% ethanol eluate fraction from a macroporous resin of flowers of Datura metel L. collected in the Jiangsu Province of China resulted in the isolation of two new withanolides, baimantuoluoline G (1) and baimantuoluoside H (2). Their structures were elucidated as (12β,6β,22R)-1,10-seco-6,12,27-trihydroxy-26-oxo-witha-3,5,24-trienolide-1-oic acid-ε-lactone (1) and (5β,6α,12β,22R)-5,6,12,27-tetra-hydroxy-1,26-dioxo-witha-2,24-dienolide-27-O-β-glucopyranoside (2) on the basis of extensive spectroscopic analysis (1D, 2D-NMR and HRESIMS) and chemical studies.
从中国江苏省采集的曼陀罗花的大孔树脂 50%乙醇洗脱部分进行化学研究，分离得到两种新的茄螺二烯酮类化合物，白曼陀罗醇 G（1）和白曼陀罗醇 H（2）。它们的结构通过广泛的光谱分析（1D、2D-NMR 和 HRESIMS）和化学研究被阐明为（12β，6β，22R）-1，10-断-6，12，27-三羟基-26-氧代茄螺二烯-1-酸-ε-内酯（1）和（5β，6α，12β，22R）-5，6，12，27-四羟基-1，26-二酮基茄螺二烯-27-O-β-吡喃葡萄糖苷（2）。
