The title dienones have been prepared from (-)-(2R,1′S)-8-benzyloxy-2-(1′-hydroxyethyl)-5-methoxy-1,2,3,4-tetrahydronaphthalen-2-ol, by a series of reactions in which the selective cleavage of an aryl methyl ether in the presence of an aryl ethyl ether plays a key role. This 10- step sequence proceeds in an overall yield of 55%, and chiral integrity is preserved throughout.
标题二烯酮是由(-)-(2R,1′S)-8-苄氧基-2-(1′-羟乙基)-5-甲氧基-1,2,3,4-四氢萘-2-醇通过一系列反应制备而成的,其中芳基甲基醚在芳基乙基醚存在下的选择性裂解起了关键作用。这一系列反应共分 10 个步骤,总产率为 55%,并且始终保持了手性完整性。