Enantioselective Synthesis of a Furan Lignan (+)-Sylvone
作者:Eunhye Lee、Jiyun Bang、Jisook Kwon、Chan-Mo Yu
DOI:10.1021/acs.joc.5b01677
日期:2015.10.16
synthesis begins from an enantioselective aldol reaction of methyl allenoate with 3,4-dimethoxybenzaldehyde to afford α-addition aldol adduct. Key steps for the synthesis of sylvone include an oxacyclization of the α-hydroxy allenyl adduct followed by a Michaeladdition of a 1,3-dithiane derivative to establish a sylvone skeleton with suitable stereoselections.