(+)-(2S,3R)-Piscidic acid was efficiently synthesized with high optical purity (90% e.e.) via Sharpless catalytic asymmetric dihydroxylation of a trisubstituted olefin in only 6 steps from commercially available 4-hydroxyphenylpyruvic acid as the starting material. The reaction proceeded with high optical purity by using the chiral ligands, dihydroquinidine 2,5-diphenyl-4,6-pyrimidinediyl diether or
通过仅六步就从商业上可获得的
4-羟基苯基丙酮酸作为起始原料,通过三取代烯烃的Sharpless催化不对称二羟基化反应,以高光学纯度(90%ee)有效地合成了(+)-(2S,3R)-
二十二烷酸。通过使用手性
配体二氢
奎尼丁2,5
-二苯基-4,6-
嘧啶二基
二醚或二氢
奎尼丁1,4-
蒽醌二基
二醚,反应以高光学纯度进行。