Improved Stereoselective Synthesis of Optically Active Methylene Lactone, Key Intermediate for the Synthesis of 1,2-Oxidized Furofuran Lignan, by Direct α-Methylenation to Butanolide
作者:Satoshi YAMAUCHI、Nobuyuki YAMAMOTO、Yoshiro KINOSHITA
DOI:10.1271/bbb.64.2209
日期:2000.1
(3R)-3-[(1R)-1-(tert-Butyldimethylsilyl)oxy-1-(2-methoxy-4,5-methylenedioxyphenyl) methyl]-2-methylene-4-butanolide, which is a key intermediate for the synthesis of 1,2-oxidized furofuran lignan, was stereoselectively synthesized from L-glutamic acid by applying direct methylenation to butanolide.
(3R)-3-[(1R)-1-(叔丁基二甲基甲硅烷基)氧基-1-(2-甲氧基-4,5-亚甲基二氧苯基)甲基] -2-亚甲基-4-丁醇化物通过直接对丁醇化物进行亚甲基化,由L-谷氨酸立体选择性地合成1,2-氧化的呋喃呋喃木酚聚糖。