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NMR谱在确定克罗烷二萜立体构型中的运用[J]. 中国药科大学学报, 1994, (3): 138-140.
引用本文: NMR谱在确定克罗烷二萜立体构型中的运用[J]. 中国药科大学学报, 1994, (3): 138-140.
The Stereochemistry Determination of 19-Nor-Neoclero dane by NMR Methods[J]. Journal of China Pharmaceutical University, 1994, (3): 138-140.
Citation: The Stereochemistry Determination of 19-Nor-Neoclero dane by NMR Methods[J]. Journal of China Pharmaceutical University, 1994, (3): 138-140.

NMR谱在确定克罗烷二萜立体构型中的运用

The Stereochemistry Determination of 19-Nor-Neoclero dane by NMR Methods

  • 摘要: 19-去甲基克罗烷(19-Nor-neoclerodane)二萜的化学结构较为复杂,含有多个手性碳。本文对此类化合物进行了系统的核磁共振(NMR)谱研究,首次提出运用H-6、H-10及C-6,C-10的化学位移(δ)值推测这类二萜化合物的绝对构型,并从理论上对此实验结果进行了论证。运用这一方法,推证了两个新化合物庐山香科素丁(teuperninD1)和穗花香科素(teuponin2)的立体构型,与圆二色散(CD)光谱法及X射线单晶衍射法所得结果完全一致。

     

    Abstract: An extensive investigation on the NMR data of some 19-nor-neoclerodane diterpenoids showed the stereochemistries of the compounds might be predicted according to the chemical shifts of H-6,H-10 in the 1HNMR spectra and the values of some carbons in the (1

     

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