The synthesis of etamido-4-O-[2-acetamido-4-O-{2-acetamido-2-deoxy- an
osyl]-2-deoxy-beta-D-glucopyranosyl)-L-histidine amide (3), ,6,7-tetra
hydroimidazo[4,5-c]pyridine-6-carboxylic amide (4) and 6,7-tetrahydroi
midazo[4,5-c]pyridine-6-carboxamide (5) is achieved via coupling of th
e appropiate glycosylamines with Boc-protected L-histidine or with ,6,
7-tetrahydroimidazo[4,5-c]pyridine-6-carboxylic acid ((-)-spinacine),
respectively, by means of EEDQ and subsequent deprotection.