【摘要】 <正> 有机化合物稀溶液的红外光谱用来研究分子内氢键是否存在,存在的形式等,以确定分子的构型和构象。毛冬青皂甙甲 IlexsaponinA 是从民间治疗冠心病有效药物毛冬青Ilex更多还原

【Abstract】 The intramolecular hydrogen bonding of 18,19-anhydro-sapogenindimethyl ester of Ilexsaponin A,the hydrolysis product of a new triterpenoid saponin isolated from Ilex pubescens Hook et Am,was studied by infrared spectroscopic tech-nique,and an assignment was made of its stereochemical configurations on the basisof comparison the effect of concetrations and the peak shift before and after deuterra-tion.Included in this paper is a detailed discussion on the optimum experimental con-ditions,such as sample concentrations,thickness of sample cells and so on,necessaryfor carrying out the determination.更多还原