PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18801477-5 2008 Therefore, we conclude that activation of thioglycoside donors by MeOTf to glycosylate at O-4 of a glucosamine acceptor is best accomplished following the temporary protection of the N-acetyl group as a methyl imidate, especially when the donors are highly reactive and prone to degradation. Glucosamine 99-110 immunoglobulin kappa variable 1D-37 (non-functional) Homo sapiens 90-93 18801477-6 2008 In contrast, if donor and acceptor can withstand multiple equivalents of BF(3) x OEt(2), glycosylations at O-4 of a glucosamine acceptor with a trichloroacetimidate donor does not benefit from the temporary protection of the N-acetyl group as a methyl imidate. Glucosamine 116-127 immunoglobulin kappa variable 1D-37 (non-functional) Homo sapiens 107-110 17880931-0 2007 Differential O-3/O-4 regioselectivity in the glycosylation of alpha and beta anomers of 6-O-substituted N-dimethylmaleoyl-protected D-glucosamine acceptors. Glucosamine 132-145 immunoglobulin kappa variable 1D-37 (non-functional) Homo sapiens 17-20