A. Fleurant et al., HIGHLY DIASTEREOSELECTIVE SYNTHESIS AND NMR CHARACTERIZATION OF NATURAL INDOLIZIDINE ALKALOIDS, Journal of heterocyclic chemistry, 32(1), 1995, pp. 255-258
A diastereoselective, general and versatile access to disubstituted in
dolizidines is described. The nmr conformational analysis permits us t
o establish preferred conformations.