The Synthesis of Functionalised Bicyclo[3.3.1]nonanes Related to Huperzine A
作者:Vittorio Caprio、Jarrod Ward、Alison Johnson、George Clark
DOI:10.1055/s-0029-1216946
日期:2009.10
structure of huperzine A, are described. Cyclisation of (2-pyridyl)methyl radicals derived from two model [(2-phenylselenomethyl)-3-pyridyl]cyclohexenones, proceeds in 6-exo-trig mode to give bicyclo[3.3.1]nonanes. Cyclisation yields are related to the substitution pattern and relative stereochemistry about the enone ring. Cyclisation precursors were accessed by either conjugate addition of a (3-pyridyl)cuprate