Reaction of organolead triacetates with 4-ethoxycarbonyl-2-methyloxazol-5-one. The synthesis of α-aryl and α-vinyl N-acetylglycine ethyl esters and their enzymic resolution
作者:Jacqueline Morgan、John T. Pinhey
DOI:10.1016/0040-4039(94)88529-x
日期:1994.12
An efficient synthesis of the moisture-sensitive compound, 4-ethoxycarbonyl-2-methyloxazol-5-one, has been achieved. This compound undergoes high-yielding arylation and vinylation at the 4-position with organolead triacetates to give compounds which in water are converted to α-aryl and α-vinyl N-acetylglycine ethyl esters. These α-substituted glycine derivatives may be kinetically resolved in very
已经实现了对
水分敏感化合物4-乙氧基羰基-2-甲基
恶唑-5-酮的有效合成。该化合物在4-位用有机三
乙酸铅进行高产率的芳基化和
乙烯基化反应,得到在
水中转化为α-芳基和α-
乙烯基N-乙酰基甘
氨酸
乙酯的化合物。这些α-取代的甘
氨酸衍
生物可以通过相应的
羧酸的酯基或酰胺官能团的酶
水解以非常好的收率和高的对映体过量动力学地拆分。