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大叶鱼骨木茎的化学成分研究 总被引:1,自引:0,他引:1
Chemical constituents of the stems of Canthium simile were studied.Seven compounds were isolated from ethyl acetate extract of the stem,and their structures were elucidated by various spectroscopic methods.They were identified as syringic acid (Ⅰ),isovanillic acid (Ⅱ),Caruilignan D (Ⅲ),(3β)-28-Norlup-20(29)-ene-3,17-diol(Ⅳ),3,4-dimethoxy-2,4-hexadienedioic acid (Ⅴ),dibutyl phthalate (Ⅵ) and diisobutyl phthalate(Ⅶ).The seven compounds were isolated from this genus for the first time. 相似文献
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不对称三组分Kabachnik-Fields反应合成光学活性的α-氨基膦酸酯,由于其多组分反应自身所具有的独特优势,近年来已成为一个非常有吸引力的研究领域.从手性催化剂催化和光学活性底物诱导两方面综述了不对称Kabachnik-Fields反应合成手性α-氨基膦酸酯及其衍生物的最新研究进展,重点介绍了手性催化剂与手性底物构型对反应立体选择性的影响及其有关反应机理.最后提出了不对称多组分Kabachnik-Fields反应研究中存在的一些问题,并对其今后的发展方向进行了展望. 相似文献
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