D. Enders et C. Thiebes, Enantioselective synthesis of both enantiomers of bgugaine employing the SAMP-hydrazone method, J INDIAN CH, 76(11-12), 1999, pp. 561-564
The synthesis of both enantiomers of bgugaine by 1,2-addition of organometa
llic reagents to aldehyde-SAMP-hydrazones, followed by N-N-bond cleavage an
d cyclization is described. The new method provides an entry into the prepa
ration of enantiomerically pure 2-substituted pyrrolidines.