Ring contraction of methyl 3-acetamido-3,6-dideoxy-α-L-glucopyranoside
Abstract
Methyl 3-acetamido-3,6-dideoxy-2-O-methane-sulphonyl-α-L-glucopyranoside, on heating with sodium methoxide in methanol, gives the ring-contracted compound (2) and its (R)-diastereoisomer (3).