using stereochemical correlation and X-ray crystallography and the remainder have been tentatively assigned using NMR spectroscopic methods but finally confirmed by circular dichroism (CD) spectroscopy. These configurational assignments support and extend the validity of an empirical model, previously used to predict the preferred stereochemistry of TDO-catalysed cis-dihydroxylation of ten 1,4-disubstituted
通过使用恶臭假单胞菌UV4(
甲苯二加氧酶(TDO)的来源)对相应的1,4-二取代的苯底物进行细菌
生物转化,已获得一系列十种顺式-二氢二醇代谢物。使用手性固定相HPLC和1H NMR光谱确定了它们的对映体过量(ee)值。大多数的顺式二氢二醇的绝对构型已通过立体
化学相关性和X射线晶体学确定,其余的已通过NMR光谱法初步确定,但最终通过圆二色性(CD)光谱法得到证实。这些构型分配支持并扩展了经验模型的有效性,该模型先前用于预测TDO催化的10种1,4-二取代苯底物的顺式-二羟基化的优选立体
化学,