【摘要】 乐山蜘蛛抱蛋;蜘蛛抱蛋皂甙;铃兰皂甙元Ｂ－５－Ｏ－β－Ｄ－吡喃葡萄糖甙更多还原

【Abstract】 Crystal V, VI and VII were isolated from the seeds of Goniothalamus howii Merr. et Chun. Based on the analysis of IR, 1H NMR, 13 C NMR, MS and spectral analysis of their derivatives, they were identified as a new type of annonaceous acetogenins——seco bistetrahydrofuran annonaceous acetogenins. V and VI were named as howiicin D and howiicin E, respectively. VII is a mixture of two compounds, named howiicins F and C, which have the same plane structure.更多还原