作者:M.M. Cid、U. Eggnauer、H.P. Weber、E. Pombo-Villar
DOI:10.1016/0040-4039(91)80484-n
日期:1991.12
(-)-delta-N-normethylskytanthine (1) has been synthesised from (1R,4R,1'S)-2-(phenylethyl)-2-azabicyclo[2.2.1]hept-5-ene (2) which undergoes a ketene-amino-Claisen rearrangement by reaction with dichloroketene to generate (1S,6R,1'S)-3-(phenylethyl)-5,5-dichloro-4-keto-3-azabicyclo[4.3.0]non-7-ene (3), which could be converted to 1 in eleven steps.
(-)-δ-N-去甲基斯他汀(1)是从(1R,4R,1'S)-2-(苯乙基)-2-氮杂双环[2.2.1]庚-5-烯(2)通过与二氯亚氯乙烯反应发生酮烯-amino-Claisen重排生成(1S,6R,1'S)-3-(苯乙基)-5,5-二氯-4-酮-3-氮杂双环[4.3.0]壬-7-烯(3),随后经过十一步反应可转化为1。