Stereodivergent Synthesis of 1-Hydroxymethylpyrrolizidine Alkaloids
作者:Abhijeet M. Sarkale、Chandrakumar Appayee
DOI:10.1021/acs.orglett.0c01375
日期:2020.6.5
stereodivergent strategy for the asymmetric synthesis of all stereoisomers of 1-hydroxymethylpyrrolizidine alkaloids is developed using an asymmetric self-Mannich reaction as a key step. An anti-selective self-Mannich reaction of methyl 4-oxobutanoate with the PMP-amine catalyzed by a chiral secondary amine is successfully optimized for the asymmetric synthesis of (+)-isoretronecanol and (−)-isoretronecanol