Assignment of Configuration in a Series of Dioxolanone-Type Secondary Metabolites from<i>Guignardia bidwellii</i>- A Comparison of VCD and ECD Spectroscopy
作者:Lars Andernach、Louis P. Sandjo、Johannes C. Liermann、Iris Buckel、Eckhard Thines、Till Opatz
DOI:10.1002/ejoc.201300530
日期:2013.9
The absolute configurations of a series of phytotoxic dioxolanone-type secondary metabolites isolated from culture filtrates of the grape black rot fungus Guignardia bidwellii were determined by vibrational circular dichroism (VCD) spectroscopy in the mid-IR frequency range. Comparison of the recorded data with DFT calculations showed good agreement between experiment and theory for VCD, whereas electronic
通过中红外频率范围内的振动圆二色性 (VCD) 光谱测定从葡萄黑腐菌 Guignardia bidwellii 的培养滤液中分离出的一系列植物毒性二氧戊环酮型次级代谢物的绝对构型。记录数据与 DFT 计算的比较表明 VCD 的实验和理论之间有很好的一致性,而化合物的电子圆二色性 (ECD) 数据与在相同水平的时间相关 DFT (TDDFT) 计算获得的预测光谱匹配不佳理论。