Synthesis of optically active t-butyl (3R,5S)-3,5-isopropylidenedioxy-6-heptynoate through baker's yeast reduction of methyl 3-oxo-4-pentynoate
作者:Mohammad Hafeez Ansari、Tetsuo Kusumoto、Tamejiro Hiyama
DOI:10.1016/s0040-4039(00)61408-9
日期:1993.12
Baker's yeast reduction of methyl 3-oxo-4-pentynoate gave the corresponding (S)-3-hydroxy ester (80% e.e.), whereas its 5-trimethylsilyl derivative gave the (R)-enantiomer (82% e.e.). The (S)-alcohol was led to optically active t-butyl (3R,5S)-3,5-isopropylidenedioxy-6-heptynoate, a versatile synthetic intermediate of artificial HMG-CoA reductase inhibitors.
贝克酵母还原3-氧代-4-戊酸甲酯得到相应的(S)-3-羟基酯(80%ee),而其5-三甲基甲硅烷基衍生物得到(R)-对映异构体(82%ee)。(S)醇生成光学活性的叔丁基(3R,5S)-3,5-异丙基二烯二氧基-6-庚酸叔丁酯,这是一种人工HMG-CoA还原酶抑制剂的通用合成中间体。