A concise, scaleable route to both isomers of Z-2-tert-butoxycarbonylamino-6-hydroxyhex-4-enoic acid from 2-butyne-1,4-diol, utilizing l- and d-acylase enzymes is presented. These intermediates were readily converted to multigram quantities of N-Boc-(2S,4S,5R)- and N-Boc-(2R,4R,5S)-bulgecinine.
提出了利用1-和d-酰基转移酶从
2-丁炔-1,4
-二醇到Z -2-叔-丁氧基羰基
氨基-6-羟基己基-4-烯酸的两个异构体的简洁,可扩展的途径。这些中间体很容易转化为毫克数的N -Boc-(2 S,4 S,5 R)-和N -Boc-(2 R,4 R,5 S)-bulgecinine。