Synthesis of epibatidine homologues: Homoepibatidine and bis-homoepibatidine
作者:John R Malpass、David A Hemmings、Anna L Wallis
DOI:10.1016/0040-4039(96)00687-9
日期:1996.5
based, respectively, on the tropane (8-azabicyclo[3.2.1]octane) and homotropane (9-azabicyclo[4.2.1]nonane) ring systems. Epoxy- tropanes and -homotropanes (which are readily available from simple cyclic dienes) are convenient precursors for the azabicyclic alkenes needed for the key reductive coupling with pyridine derivatives.
Exo- and endo-6-hydroxy- and 6,7-epoxytropanes; Total synthesis of scopine, pseudoscopine, and nor-derivatives
作者:David E Justice、John R Malpass
DOI:10.1016/0040-4039(95)00836-2
日期:1995.6
Novel endo- 6,7-epoxy-8-azabicyclo[3.2.1]octanederivatives and the corresponding exo-analogues have been synthesized and show substantially different reactivity; the resistance of the exo-epoxides to ring opening during hydride reduction and catalytic hydrogenolysis is exploited in a total synthesis of scopine, pseudoscopine, and nor -derivatives.