对凝集素具有高亲和力的小糖簇的合成是糖技术中的重要课题之一。尽管环状α-(1→6)-d-八葡糖苷(Cl8)是一个有吸引力的支架,上面放置了糖基侧基,但该化合物仅具有仲羟基,该仲羟基对取代反应相对没有反应。CI8邻位二醇的氧化和2-氨基乙基甘露糖苷对所得二醛的还原胺化反应得到具有各种平均甘露糖掺入数(2-7)的甘露糖-CI8共轭物。从MALDI-TOF质量和(1)1 H NMR光谱推断出平均值。甘露糖-CI8缀合物对伴刀豆球蛋白A的结合能力随平均甘露糖掺入次数的增加而增加,在四价时达到平稳状态,如基于乳胶珠的凝集凝集素测定所估计的。毒性试验证明了甘露糖-CI8缀合物的生物相容性。
Synthesis and glycosidase inhibitory profiles of functionalised morpholines and oxazepanes
作者:Peter A. Burland、Helen M.I. Osborn、Andrea Turkson
DOI:10.1016/j.bmc.2011.07.019
日期:2011.9
libraries of morpholines and oxazepanes have been prepared via the reductive amination reaction between dialdehydes, derived from carbohydrates, and a range of amines. In this way, functionalised morpholines and oxazepanes have been prepared that include N-alkylated derivatives, disaccharide analogues, and estercontaining derivatives. The abilities of these functionalised morpholines and oxazepanes
An improved synthesis of morpholino-glycoamino acids
作者:Marko Anderluh
DOI:10.1016/j.tetlet.2006.10.133
日期:2006.12
The current synthesis of hybrid morpholino-glycoamino acids through double reductive amination is characterized by modest yields and lengthy reaction times. We propose an optimized procedure that results in improved yields and the shortest reaction times reported so far.
Synthesis of cyclic dimeric methyl morpholinoside—a common synthetic precursor to cyclic dinucleotide analogs
作者:Charles R. Kinzie、Andrew D. Steele、Stacy M. Pasciolla、William M. Wuest
DOI:10.1016/j.tetlet.2014.07.038
日期:2014.8
An eight-step synthesis of cyclic dimeric methyl morpholinoside (c-di-MM), a common synthetic precursor to a number of cyclic dinucleotide analogs is reported. The synthesis of c-di-MM proceeds through a morpholine monomer prepared from readily available inexpensive starting materials and culminates with a key macrolactamization reaction to provide the macrocycle in 15% overall yield.
Abstract The reaction of thiodiglycolaldehyde and diglycolaldehyde with tert -butyl cyanoacetate yields derivatives of tetrahydrothiopyran and tetrahydropyran, respectively. Similar reactions of diglycolaldehyde derivatives having a furan nucleus at the α-position yield d - xylo (major) and l - arabino (minor) C -pyranosyl derivatives. Starting from α-( S )-methoxy-α′-( R )-hydroxymethyldiglycolaldehyde
Investigation of novel cyclic structure in glycoconjugate using a simple model system
作者:Wei Huang、Hanliu Leah Wang、Mingzhang Wang、Keith Davis、Jin Xie、Paul W. Brown、Stephen A. Kolodziej、Qin Zou、James A. Carroll、Jason Rouse、Olga Friese、Michael Jones
DOI:10.1016/j.carres.2020.108103
日期:2020.9
monosaccharide and a synthetic peptide to investigate the fundamental reductive amination chemistry, which is one of the most commonly utilized conjugation strategies for glycoconjugate vaccines. We identified a cyclic tertiary amine linkage as the primary conjugation linkage for monosaccharides containing dialdehydes. Such linkage is previously not well-recognized by the glycoconjugate vaccine field. Our