【摘要】 利用柱色谱对穿心莲地上部分的提取物进行分离,得到3,14-二去氧穿心莲内酯苷和14-去氧穿心莲内酯苷。利用核磁共振氢谱(1H-NMR)、碳谱(13C-NMR)以及双量子滤波相关谱(DQFCOSY)、总相关谱(TOCSY)、异核多量子相干谱(HMQC)、异核多键相关谱(HMBC),解析这两个化合物的结构。确定了1H-NMR的氢信号和13C-NMR的碳信号的归属,并且用NOESY对3,14-二去氧穿心莲内酯苷的立体结构进行了研究。更多还原

【Abstract】 The 1H-NMR and 13CNMR spectra of 3,14-dideoxyandrographolide glucoside and 14-deoxyandrographolide glucoside have been assigned based on two-dimensional correlation spectroscopy including double-quantum filtered correlation spectroscopy(DQF-COSY),total correlation spectroscopy(TOCSY),heteronuclear multiple-quantum coherence(HMQC),and heteronuclear multiple-bond correlation(HMBC).The absolute configuration of 3,14-dideoxyandrographolide glucoside was studied by means of nuclear overhauser effect spectroscopy(NOESY).更多还原