Easily accessible Ac-(Z)-ΔPhe-NHMe was photoisomerized to so far unknown Ac-(E)-ΔPhe-NHMe. Some parameters of the process leading to a diastereomeric mixture of ratio 90(Z) : 10(E) have been tested and the photoisomerization has been carried out on a preparative milligram scale. The isomers were separated via crystallization followed by preparative HPLC.
容易获得的 Ac-(Z)-ΔPhe-NHMe 被光异构化为迄今未知的 Ac-(E)-ΔPhe-NHMe。对产生非对映混合物的过程的一些参数进行了测试,其比例为 90(Z) :10(E) 的非对映混合物的一些工艺参数进行了测试,并在制备毫克规模上进行了光异构化。异构体通过结晶分离,然后进行制备型高效
液相色谱分析。