Stereospecific synthesis of exo-allylic alcohol. An efficient asymmetric synthesis of (R)-(-)-2-acetyl-5,8-dimethoxy-1,2,3,4-tetrahydro-2-naphthols
作者:Mikiko Sodeoka、Takamasa Iimori、Masakatsu Shibasaki
DOI:10.1016/s0040-4039(00)99036-1
日期:——
method for the stereospecific synthesis of exo-allylic alcohols with trisubstituents is described. Using this methodology in combination with Sharpless catalytic asymmetric epoxidation, an efficient synthesis of (R)-(-)-2-acetyl-5,8-dimethoxy-1,2,3,4- tetrahydro-2-naphthol (5), an important intermediate for the anthracycline synthesis, has been accomplished in 36% overall yield from 5,8-dimethoxy-2-tetralone
描述了用三取代基立体定向合成外烯丙基醇的方法。与夏普勒斯催化不对称环氧化组合使用这种方法,(R)的有效合成- ( - ) - 2-乙酰基-5- , 8-二甲氧基-1,2,3,4-四氢-2-萘酚(5),作为蒽环霉素合成的重要中间体,已从5,8-二甲氧基-2-四氢萘酮(6)和ee达到93%的总收率达到36%。