H. Nakashima et al., A stereocontrolled route to (-)-epibatidine using a chiral cis-cyclohexadiene-1,4-diol equivalent, SYNLETT, (9), 1999, pp. 1405-1406
A concise diastereo- and enantio-controlled synthesis of (-)-epibatidine, t
he potent analgesic alkaloid from an Ecuadoran poison frog, Epipedobates tr
icolor, has been developed starting with a synthetic equivalent of chiral c
is-cyclohexadiene- 1,4-diol.