Synthesis of 9-O-acyl- and 4-O-acetyl-sialic acids.
Various 9-O-acyl derivatives of N-acetyl- and N-glycoloyl-neuraminic acid, and O-(5-acetamido-3,5-dideoxy-D-glycero-alpha- and beta-D-galacto-2-nonulopyranosylonic acid)-(2----6)-O-beta-D-galactopyranosyl-(1----4)-D-glucopyranose were regioselectively synthesized by use of ortho esters. In addition, 5-acetamido-4-O-acetyl-D-glycero-D-galacto-2-nonulopyranosonic acid was prepared starting from the benzyl and methyl esters of N-acetylneuraminic acid.
School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.
H
H
Ogura
K
K
Furuhata
S
S
Sato
K
K
Anazawa
M
M
Itoh
Y
Y
Shitori
D002236:Carbohydrate Conformation; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D009904:Optical Rotation; D012794:Sialic Acids / Q000138:chemical synthesis*; D013329:Structure-Activity Relationship
D007202:Indicators and Reagents; D012794:Sialic Acids