Stereoselective total synthesis of (±)-tochuinyl acetate and (±)-dihydrotochuinyl acetates
作者:A. Srikrishna、T.Jagadeeswar Reddy
DOI:10.1016/s0040-4020(98)00436-0
日期:1998.7
Details of the first total synthesis of the marine natural product dihydrotochuinyl acetate is described. Cyclopentenone annulation of p-methylacetophenone via a Claisen rearrangement-Wacker oxidation based sequence generated the cyclopentenone 3, a known precursor for the sesquiterpenes cuparene, laurene, α-cuparenone and β-cuparenones. Conversion of the ketone moiety into a carboxylate followed by
描述了海洋天然产物乙酸二氢甲苯酯的第一全合成的细节。通过基于克莱森重排-Wacker氧化的序列对对甲基苯乙酮进行环戊烯酮环化,生成了环戊烯酮3,它是倍半萜烯铜烯,月桂烯,α-cuparenone和β-cuparenones的已知前体。酮部分转化为羧酸酯,随后进行立体选择性烷基化和还原,将环戊烯酮3转化为伯醇19。醇19的桦木还原,然后进行乙酰化,得到乙酸(±)-二氢甲苯基乙酸酯,而对乙酰基19进行直接乙酰化,得到乙酸(±)-二氢甲苯基乙酸酯。