An efficient asymmetric synthesis of δ-lactones such as prelactone B has been developed. As key steps, the SAMP/RAMP-hydrazone methodology for the synthesis of 2-methylenated 1,3-diols and a homogenous hydrogenation were used.
已开发出一种高效的 β-内酯(如前内酯 B)不对称合成方法。作为关键步骤,使用了合成 2-亚甲基化 1,3
-二醇的
SAMP/
RAMP-腙方法和均相氢化。