Diastereoselective reduction of an α-keto-ester derived from (−)-8-phenylmenthol: A 4-step synthesis of R-Halostachine analogue.
摘要:
An efficient (80% total yield) 4-step synthesis of a 94% e.e. R-(-)-Halostachine analogue is described. The method offers the possibility to introduce various substituents onto the aromatic ring and various alkyl groups on the amine. A one-step and high yield (almost-equal-to 100%) conversion of esters into amides is presented.