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Synthesis of ManNGc. a) benzyl alcohol, acetyl chloride, 86 %, b) benzyl-dimethylacetyl, (+)-camphor-10-sulfonic acid, acetonitrile, 84 %, c) pyridine, triflic anhydride, dichloromethane, d) sodium azide, dimethylformamide, 72 % (over two steps), e) Pd(OH)2/C(cat), H2(g), HCl(aq), methanol, 89 %, f) acetoxyacetyl chloride, sodium bicarbonate, water, 94 %.
