化学
邻接
质子
质子核磁共振
碳-13核磁共振
谱线
核磁共振谱数据库
二维核磁共振波谱
碳-13核磁共振卫星
福斯科林
结晶学
核磁共振波谱
立体化学
氟-19核磁共振
有机化学
物理
天文
量子力学
生物化学
受体
作者
Herbert Kogler,H.‐W. Fehlhaber
标识
DOI:10.1002/mrc.1260291004
摘要
Abstract The 1 H‐ and 13 C NMR spectra of forskolin have been re‐investigated. Assignments are based exclusively on unambiguous carbon–carbon and carbon‐proton correlations derived from two‐dimensional NMR spectra. Stereo‐specific differentiations were deduced from selective proton NOE measurements and the interpretation of vicinal and long‐range proton‐proton scalar couplings. The proton‐proton distances calculated from proton NOE effects fit best with a flattened boat‐like conformation of ring C, which is different from the conformation of forskolin in the solid state.
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