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남정이,Mikyung Yun 대한화학회 2008 Bulletin of the Korean Chemical Society Vol.29 No.7
A trisaccharide, 6d-Altro-Heppα (1→3) GlcNAcβ (1→3) Galα (1→OCH2CH2N3, as an O-antigenic repeating unit of Campylobacter jejuni serotypes O:23 and O:36, was synthesized. Coupling of the 6d-altro-Heppα (1→3) GlcNAcβ (1→SEt donor with Galα (1→OCH2CH2Cl acceptor in the presence of NIS-TfOH promoter afforded the trisaccharide having the β (1→3) Gal linkage. β -Stereospecificity and the desired regioselectivity for the 3-OH Gal are obtained. Subsequent hydrogenation, acetylation, azide displacement, hydrazinolysis, Nacetylation, and finally deacetylation furnished the title trisaccharide hapten for further glycoconjugation.