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5,6-Dihydroindolizines as convenient precursors of indolizidine 167B and analogues
Guazzelli, Giuditta,Lazzaroni, Raffaello,Settambolo, Roberta
, p. 3119 - 3123 (2005)
Starting from 5-carboxyethyl-5,6-dihydroindolizine, the title alkaloid was obtained in 25% overall yield via differently C5-substituted 5,6-dihydroindolizines and final exhaustive hydrogenation. An alternative strategy for the synthesis of optically activ
