Dg. Gonzalez et al., SYNTHESIS OF 2-O-METHYL AND 2-O-ACETYL-3,4-0-ISOPROPYLIDINE D-THREOSEAND D-ERYTHROSE DERIVATIVES, Anales de quimica, 90(2), 1994, pp. 212-216
Reaction of 2,3-O-isopropylidene-D-glyceraldehyde with dialkyl and dia
ryl dithiacetals as well as with their mono-S-oxides, produces 3,4-O-i
sopropylidene-D-erythro and D-threo derivatives which were methylated
and acetylated to yield 2-O-methyl and 2-O-acetyl derivates. When addu
cts of mono-S-oxides were methylated, elimination was observed.