A total synthesis of racemic epibatidine, a natural product with analgesic activity, is described. Distinctly different from the previously published routes it File:Epibatidine Corey.svg File; File history; File usage; Metadata; Size. English: Reaction scheme of the stereocontrolled total synthesis of Epibatidine. Deutsch Epibatidine: Nature’s Pain Reliever Name Louissaint, Philippe Introduction. The chemical synthesis of (+)-Epibatidine, which starts Synthesis of (−)-Epibatidine David A. Evans,* Karl A. Scheidt, and C. Wade Downey Department of Chemistry and Chemical Biology, HarVard UniVersity, The synthesis of the alkaloid epibatidine -2-(2-chloro-5-pyridyl)-7-azabicyclo[2.2.1]heptane in enantiomeric form involving, as the critical step, reaction or 5. An asymmetric synthesis to the dendrobatid alkaloid (−)-epibatidine has been described, featuring chiral resolution of both optically pure 7-azabicyclo[2.2.1. S1 Supporting information Chemoenzymatic Synthesis of (-)-Epibatidine Derek R. Boyd, Narain D. Sharma, Magdalena Kaik, Peter B. A. McIntyre, Paul J Stevenson * and. Complete schematic view of the 1993 Epibatidine's synthesis performed by Andrew C. Regan Epibatidine is an alkaloid that is secreted by the Ecuadoran frog Epipedobates anthonyi. [1] It was discovered by John W. Daly in 1974, but its structure was not. (±)-1α-Nitro-2β-[3-(6-chloropyridyl)]-cyclohexanone, a key intermediate for a stereocontrolled synthesis of the alkaloid epibatidine, possessing a 7-azanorbo.