A new synthesis of L-ascorbic acid from D-galactose
作者:Pier Luigi Barili、Giancarlo Berti、Felicia D'Andrea、Valeria Di Bussolo、Ilaria Granucci
DOI:10.1016/s0040-4020(01)88219-3
日期:1992.1
1,5-Anhydro-d-galactitol, easily available fromd-galactose, was selectively protected in positions 2, 3 and 4 and converted into 5-O-acetyl-2,6-anhydro-3-deoxyl-threo-hex-2-enonic acid methyl ester, which, on reaction with MCPBA in acetic acid gave 2,5-di-O-acetyl-α-l-lyxo-hex-2-ulopyranosonic acid methyl ester. Reaction of the latter with sodium methoxide produced sodium l-ascorbate in high yield