Synthesis and Fucosidase Inhibitory Study of Unnatural Pyrrolidine Alkaloid 4-<i>epi</i>-(+)-Codonopsinine
作者:Alexis Kotland、Fabien Accadbled、Koen Robeyns、Jean-Bernard Behr
DOI:10.1021/jo200176u
日期:2011.5.20
The total synthesis of enantiopure 4-epi-(+)-codonopsinine was achieved in 10 steps starting from D-ribose as a chiral building block. The key step involved a highly stereoselective nucleophilic addition of a Grignard reagent to a protected ribosylamine. Synthesis of the N-desmethyl derivative and its p-tolyl analogue was also accomplished, and the compounds were assayed against alpha-fucosidase.