(2S,6S)-2,4,6-Tris(phenylmethyl)piperazine was prepared in I I steps and 53% overall yield from S-phenylalanine. Key steps in the synthesis involved reductive amination to introduce an ethoxycarbonylmethyl group on to the secondary nitrogen of the product and selective alkylation to introduce a benzyl group with complete diastereoselectivity.
(2S,6S)-2,4,6-三苄基
哌嗪通过11步反应,以53%的总收率由S-苯丙
氨酸制备而成。合成的关键步骤包括:还原胺化,将乙氧基羰甲基基团引入产物的次级氮上;以及选择性烷基化,以完全的非对映选择性引入苄基。