作者:Ignacio H. Sánchez*、María Isabel Larraza、Fernande Basurto、Ricardo Yafñez、Salvador Avila、Ricardo Tovar、Pedro Joseph-Nathan
DOI:10.1016/s0040-4020(01)96630-x
日期:1985.1
(±)--methylperezone () was obtained by selective oxidative demethylation of (±)-leucoperezone trimethyl ether (). Compound () was prepared by condensation of 2,3,5-trimethoxytoluene () with 6-methyl-5-hepten-2-one, followed by reductive removal of the tertiary alcohol. The aromatic precursor was prepared in four steps from 2,3-dimethoxytoluene () and, alternatively, in three steps from 5-bromoveratraldehyde
通过(±)-亮哌酮三甲醚()的选择性氧化脱甲基反应获得(±)-甲基per()。通过将2,3,5-三甲氧基甲苯()与6-甲基-5-庚-2--2-酮缩合,然后还原除去叔醇来制备化合物()。芳香族前体是由2,3-二甲氧基甲苯()分四步制备的,或者由5-溴戊醛()分三步制备的。外消旋和直接与由天然R(-)-perezone()制备的旋光分子进行比较。