GABA was synthesized by deethoxycarbonylation, ester hydrolysis and nitrile reduction of a highly functionalized intermediate obtained by alkylation of diethyl cyanomalonate with ethyl bromoacetate. By judicious employment of D2O or NaBD4 in one of the three functional group transformation steps, deuterium was selectively introduced into each of the three possible sites in GABA.
GABA 是通过对高度功能化的中间体进行脱乙氧羰基化、酯
水解和腈还原合成的。该中间体是通过
二乙基氰基
丙二酸酯与乙基
溴乙酸酯进行烷基化反应获得的。通过在三种官能团转化步骤中的某一步中巧妙地使用 D2O 或 NaB
D4,可以在
GABA 的三个可能位点中有选择性地引入
氘。