A New Enantioselective Synthesis of (2R,3S)-3-(4-Methoxyphenyl)glycidic Este via the Enzymatic Hydrolysis of erythro-N-Acetyl-.BETA.-(4-methyoxyphenyl)serine.
作者:Hirozumi INOUE、Kenji MATSUKI、Tokuro OH-ISHI
DOI:10.1248/cpb.41.1521
日期:——
Enantioselective synthesis of (2R, 3S)-3-(4-methoxyphenyl)glycidic ester ((2R, 3S)-1) via the enzymatic hydrolysis of erythro-N-acetyl-β-(4-methoxyphenyl)serine (9) was investigated. Treatment of the obtained α-amino acid (-)-10 with NaNO2-KBr-dilute H2SO4, esterification, and subsequent oxiran-ring closure of the halohydrin gave the target compound (2R, 3S)-1 with high enantiomeric excess (94% ee).
研究人员通过酶水解赤藓-N-乙酰基-β-(4-甲氧基苯基)丝氨酸(9),研究了(2R, 3S)-3-(4-甲氧基苯基)缩水甘油酯((2R, 3S)-1)的对映选择性合成。用 NaNO2-KBr 稀释 H2SO4 处理得到的 α- 氨基酸 (-)-10,进行酯化,然后将卤代醇进行环状闭合,得到目标化合物 (2R,3S)-1,对映体过量率高(94% ee)。