Department of Phytochemistry, China Pharmaceutical University, Nanjing, P R China.
Planta Med. 2010 Jun;76(9):909-15. doi: 10.1055/s-0029-1240842. Epub 2010 Feb 8.
Five new oligosaccharides, named perisesaccharides A-E (1- 5), were isolated from the root barks of Periploca sepium. Their structures were elucidated by NMR and HRESIMS data. The absolute configurations of these compounds were determined by a combination of X-ray diffraction analysis, modified Mosher's method, circular dichroism spectroscopy, and acid hydrolysis. The boat conformation of oleandronic acid delta-lactone was reported for the first time.
从杠柳根皮中分离得到 5 个新的寡糖，命名为佩里昔萨聚糖 A-E（1-5）。通过 NMR 和 HRESIMS 数据阐明了它们的结构。通过 X 射线衍射分析、改进的 Mosher 法、圆二色光谱和酸水解的组合，确定了这些化合物的绝对构型。首次报道了杠柳酸 delta-内酯的船式构象。
