The absolute stereochemistry of the C-2' position of (-)-preorixine, postulated to be an important biosynthetic precursor of various quinoline alkaloids, was assigned as R by the combination of its chemical transformation and the extended Mosher method. The stereochemistry of the C-2' position of (+)-orixine was also concluded to be R, establishing taht no inversion occurred when (-)-preorixine was transformed into (+)-orixine.
(-)-preorixine的C-2'位点的绝对立体
化学结构被认为是多种
喹啉生物合成前体的重要结构,通过结合其
化学转化和扩展的Mosher方法,将其确定为R。(+)-orixine的C-2'位点的立体
化学结构也被确定为R,从而确定当(-)-preorixine转化为(+)-orixine时不会发生反转。