Trigochinins A–C (1–3) are three highly oxygenated daphnane-type diterpenes isolated from Trigonostemon chinensis. Their structures with the absolute configurations were initially assigned by a combination of spectroscopic data, X-ray crystallography (Mo Kα radiation) study and CD analysis. In the current study, the absolute configurations of trigochinins A–C were confirmed by single crystal X-ray diffraction (Cu Kα radiation) study, CD spectral analogy, and theoretical ECD study by using quantum chemical TDDFT calculations.

中文翻译：

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地高辛A–C绝对构型的确证研究

Trigochinins A-C（1 - 3）的三个高度充氧daphnane型双萜从三宝木属羊草隔离。通过结合光谱数据，X射线晶体学（MoKα辐射）研究和CD分析，初步确定了它们具有绝对构型的结构。在当前的研究中，通过单晶X射线衍射（CuKα辐射）研究，CD光谱类似物和理论ECD研究（通过量子化学TDDFT计算）证实了藜芦素A–C的绝对构型。