Resolution of prenyl bromohydrin esters and derivatives: synthesis of the quinoline alkaloid (+)-(R)- and (−)-(S)- lunacridine
作者:Stephen A. Barr、Derek R. Boyd、Narain D. Sharma、Timothy A. Evans、John F. Malone、Vimal D. Mehta
DOI:10.1016/s0040-4020(01)89424-2
日期:1994.1
Chromatographic separation of the bromohydrin MTPA diastereoisomers formed at the prenyl group attached to quinoline and coumarin rings is reported; base catalysed cyclization of the bromo MTPA esters in the quinoline series yielded the corresponding prenyl epoxide enantiomers. This provides a synthetic route to the enantiopure quinoline alkaloid lunacridine 11 and to the dihydrofuroquinoline 8-methoxy-platydesmine 8.