A concise and potentially practical synthesis of thetitle compound has been achieved. The routefeatures a high degree of convergence and economy of syntheticoperations. A key step is the concurrentintroductory addition of three
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L-fucosyl residues atrequired hydroxyl acceptor sites (see
37
39).Conjugation to carrier protein was achieved, and a route toinclude truncated structures for investigations forantibody specificity was accomplished.