Asymmetric synthesis from pyridines: use of new chiral 1,4-dihydropyridines in a short synthesis of 5,8-disubstituted indolizidine (+)-209B

Abstract
The synthetic potentiality of chiral oxazolidines, prepared from 3-picoline via a 1,4-dihydropyridine intermediate, has been illustrated by an expeditious route to the 5,8-disubstituted indolizidine alkaloid (+)-209B.