SEQUENCE-SPECIFIC_医网打尽文献搜索 Keywords：HNTX-Ⅰ;2D-NMR; Sequence-specific assignment; Secondary structure [gap=431]关键词：HNT-Ⅰ;二维核磁共振;序列专一归属;二级结构
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本主综述了二维核磁共振谱在测定二萜类生物碱结构中的最近进展。
The up-dated applications of 2D—NMR techniques in determining the structures of some diterpenoid alkaloids are reviewed.
采用高分辨质谱和二维核磁共振谱等光谱技术，确定了该化合物的化学结构。
Through high-resolution mass spectrometry and two-dimensional NMR spectroscopy, the invention determines the chemical structure of the compound.
利用二维核磁共振技术对一类新的含羟基中环二胺及其衍生物在水溶液中的构型和构象进行了较为详尽的研究。
NMR techniques were used to investigate the stereo configuration and conformation of the hydroxyl mesocyclic diamines and their derivatives in aqueous solution.
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