立体化学
光谱分析
分离(微生物学)
化学
晶体结构
表征(材料科学)
结晶学
生物
材料科学
物理
纳米技术
光谱学
生物信息学
量子力学
作者
Yong‐Xian Cheng,Jun Zhou,Ning‐Hua Tan,Rong‐Wei Teng,Yang Lü,Cheng Wang,Qi‐Tai Zheng
摘要
Five novel alkaloids, brachystemidines A-E (1-5), were isolated from the roots of Brachystemma calycinum. Their structures were established by spectral data, especially by 1D and 2D NMR techniques. The crystal structure of brachystemidine D was determined via X-ray diffraction analysis.
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