申请人:Hoffmann-La Roche Inc.
公开号:US04234490A1
公开(公告)日:1980-11-18
A process is disclosed for producing (S)-(+)-6-hydroxy-2,5,7,8-tetramethylchroman-2-methanol from either alkyl(R)-2-benzyloxy-3-hydroxy-2-methyl-propionate or (S)-2,2,4-trimethyl-1,3-dioxolan-4-ethanol including intermediates in this synthesis.
本发明公开了一种从烷基(R)-2-苄氧基-3-羟基-2-甲基-丙酸酯或(S)-2,2,4-三甲基-1,3-二氧杂环戊醇中制备(S)-(+)-6-羟基-2,5,7,8-四甲基色基-2-甲醇的过程,包括在此合成中的中间体。