First Synthesis of a Highly Basic Dendrimer and its Catalytic Application in Organic Methodology
作者:Arunkanti Sarkar、Palanichamy Ilankumaran、Philip Kisanga、John G. Verkade
DOI:10.1002/adsc.200404089
日期:2004.8
Sixteen OCH2CH2N3P(i-BuNCH2CH2)3N substituents (A) containing the highly basic bicyclic azido-phosphine moiety shown, have been incorporated into the dendrimer [CH2CH2N[(CH2)3N[(CH2)3NHC(O)-3,5-bis-(A)-C6H3]2]2]2 in five steps from commercially available starting materials with an overall yield of 22.5%. Also presented are examples of Michael additions, nitroaldol reactions and aryl isocyanate trimerizations
已将包含所示的高度碱性双环叠氮基膦部分的16个OCH 2 CH 2 N 3 P(i -BuNCH 2 CH 2)3 N取代基(A)引入树枝状聚合物[CH 2 CH 2 N [(CH 2)3 N [(CH 2)3 NHC(O)-3,5-双-(A)-C 6 H 3 ] 2 ] 2 ] 2从市售原料中分五个步骤完成,总收率为22.5%。还提供了由树状大分子有效催化的迈克尔加成反应,硝基缩醛反应和芳基异氰酸酯三聚反应的例子。
Synthesis of glycodendrimers containing both fucoside and galactoside residues and their binding properties to Pa-IL and PA-IIL lectins from Pseudomonas aeruginosa
作者:Isabelle Deguise、David Lagnoux、René Roy
DOI:10.1039/b701237c
日期:——
Homo- and hetero-bifunctional glycodendrimers ending with up to 16 fucoside and/or galactoside residues were synthesized in good yields using a convergent approach. The biologically active surface carbohydrate moieties were assembled in a single and efficient step using “click chemistry”. The relative binding and cross-linking abilities of these glycodendrimers were evaluated by turbidimetric analyses