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38 3 Vol. 38 No. 3
2008 6 Jun 2008

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N-װ-1346--O---D-ǵĺϳо
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Synthesis of of N-Cysteinyl-1346-tetra-O-acetyl--D-glucosamine
XIE Wen-lin1CHEN Wei-dong2TANG Zi-long1LI Tong-jin2WANG Lin-fa2YANG Da-cheng2 1. Hunan Provincial University key Laboratory of QSAR/QSPRSchool of Chemistry and Chemical EngineeringHunan University of Scince and TechnologyXiangtan UniversityXiangtan 411105China2. School of Chemistry and Chemical EngineeringSouthwest China UniversityChongqing 400715China
Abstract2-Amino-1346-tetra-O-acetyl--D-glucosamine hydrochloride was synthesized with 2-amino--D- glucosamine hydrochloride as starting materials by using benzaldehyde as protective reagent of amino groupfollowing acetylation of the hydroxy groups with acetyl anhydride and the removal of protection unit of amino group by HCl-EtOAc. Then glycosylated amino acids was synthesized through condensation of 2-amino-1346-tetra-O-acetyl--D-glucosamine hydro -chloride with protected amino acid Boc-CysCH2-U-OH in the presence of DICHOBtDIEA in the overall yield of 40.0%The structures of synthetic compounds were confirmed by IR MS and 1H NMR spectra.
Key wordsmethallyloxyphenolbenzofuranolcyclizationoptimization
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ոڣ2008-05-0
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