论文部分内容阅读
作者曾对生药山慈姑的成分进行研究,阐明了几种新的菲及二苯并吡喃结构。此次对该植物进一步探讨,除分离到一种已知的糖甙外,又分离出4种新糖甙,并确定了结构。 使用Diaion HP-20、LH-20、硅胶柱层析反复分离山慈姑的乙酸乙酯提取物及正丁醇提取物。得到化合物1～5。根据快速原子轰击质谱(FAB-MS)测定化合物1为劈裂型,以及经~1H-NMR光谱分析、认为化合物1是二个苯并吡喃对称结合的糖甙。通过NOE
The authors have studied the composition of Sagittaria sagittifolia and clarified several new phenanthrene and dibenzopyran structures. This time the plant was further explored. In addition to the separation of a known glycocalyx, four new glycosides were isolated and the structure was determined. The ethyl acetate extract and n-butanol extract of Sagittaria sagittifolia were repeatedly separated using Diaion HP-20, LH-20, and silica gel column chromatography. Compounds 1 to 5 were obtained. According to fast atom bombardment mass spectrometry (FAB-MS), compound 1 was cleaved, and by 1 H-NMR spectroscopic analysis, compound 1 was considered to be two benzopyran-symmetrically bound glycosides. By NOE