A Generalized Procedure for the One-Pot Preparation of Glycosyl Azides and Thioglycosides Directly from Unprotected Reducing Sugars under Phase-Transfer Reaction Conditions
作者:Rishi Kumar、Pallavi Tiwari、Prakas R. Maulik、Anup K. Misra
DOI:10.1002/ejoc.200500646
日期:2006.1
Per-O-acetylated glycosylazides and thioglycosides were prepared in excellent yield directlyfromunprotectedreducingsugars through in situ generation of per-O-acetylated glycosyl bromides by a generalizedone-potprocedureunderphase-transferconditions. Stereoselective products were formed with complete inversion at the anomeric centers of the glycosyl bromides to provide a general high-yielding
[EN] MODULAR SYNTHESIS OF AMPHIPHILIC JANUS GLYCODENDRIMERS AND THEIR SELF-ASSEMBLY INTO GLYCODENDRIMERSOMES<br/>[FR] SYNTHÈSE MODULAIRE DE GLYCODENDRIMÈRES AMPHIPHILES DE TYPE JANUS ET LEUR AUTOASSEMBLAGE EN GLYCODENDRIMÈRESOMES
申请人:PERCEC VIRGIL
公开号:WO2014190024A1
公开(公告)日:2014-11-27
The invention concerns compounds of the formula (I) wherein: Y1 and Y2 are independently a monosaccharide or disaccharide; X1 and X2 are independently -(R9-O)m-, -(R10)P-, -O-(R11-O)q-, -R16-O-R17-O- or a covalent bond; Q1 and Q2 are independently a nitrogen-containing heterocycle moiety; Z1 and Z2 are independently -(O-R7)-, -(O-C(=O)-R8)a-, -O-C(=O)-R12-C(=0)-R13-, -O- C(=O)-R14-C(=O)-R15 or a covalent bond; R7-R17 are each independently C1-C6 alkyl; R1-R6 are each independently a linear or branched alkly group; b, c, d, e, f, and g are 0 or 1, provided b + c + d equals at least 2 and e + f + g equals at least 2; and a, m, p, and q are each an integer from 1-6.
该发明涉及式(I)的化合物,其中:Y1和Y2分别是单糖或二糖;X1和X2分别是-(R9-O)m-,-(R10)P-,-O-(R11-O)q-,-R16-O-R17-O-或共价键;Q1和Q2分别是含氮杂环基;Z1和Z2分别是-(O-R7)-,-(O-C(=O)-R8)a-,-O-C(=O)-R12-C(=0)-R13-,-O- C(=O)-R14-C(=O)-R15或共价键;R7-R17各自独立地是C1-C6烷基;R1-R6各自独立地是线性或支链烷基;b、c、d、e、f和g为0或1,但要求b + c + d至少等于2,e + f + g至少等于2;a、m、p和q各自是1-6的整数。
Synthesis and cytotoxicity of some d-mannose click conjugates with aminobenzoic acid derivatives
Two sets of new conjugates obtained from d-mannose derivatives and o-, m-, and p-substituted benzoic acid esters interconnected through a triazole ring were synthesized by Cu(I) catalyzed azide-alkyne cycloaddition. All synthesized compounds were tested for their in vitro cytotoxic activity against seven cancer cell lines with/without multidrug resistance phenotype as well as non-tumor MRC-5 and BJ
Synthesis of N-(fluoren-9-ylmethoxycarbonyl)glycopyranosylamine uronic acids
作者:Laiqiang Ying、Jacquelyn Gervay-Hague
DOI:10.1016/j.carres.2003.10.018
日期:2004.1
The synthesis of 10 N-(fluoren-9-ylmethoxycarbonyl)glycopyranosylamine uronicacids that are amenable to solid-phase synthesis is described. The general synthetic strategy involves initial incorporation of the protected amine, followed by selective TEMPO oxidation of C-6 hydroxyl groups to give the corresponding Fmoc-protected sugar amino acids. Amine incorporation may be accomplished from aminolysis