Asymmetric synthesis of sceletium alkaloids: (−)-mesembrine, (+)-sceletium A-4, (+)-tortuosamine and (+)-N-formyltortuosamine
作者:Osamu Yamada、Kunio Ogasawara
DOI:10.1016/s0040-4039(98)01689-x
日期:1998.10
Three procedures for the transformation of achiral 1-(3,4-dimethoxyphenyl)cyclohexene into enantiomerically pure 2-(3,4-dimethoxyphenyl)cyclohex-2-en-1-ol have been established at first. Utilizing the (-)-cyclohexenol thus obtained, the four titled Sceletium alkaloids have been synthesized in the natural enantiomeric forms. (C) 1998 Elsevier Science Ltd. All rights reserved.