Fluorogenic sialic acid glycosides for quantification of sialidase activity upon unnatural substrates
作者:Cristina Y. Zamora、Marc d’Alarcao、Krishna Kumar
DOI:10.1016/j.bmcl.2013.03.076
日期:2013.6
Herein we report the synthesis of N-acetyl neuraminic acid derivatives as 4-methylumbelliferyl glycosides and their use in fluorometrically quantifying human and bacterialsialidase activity and substrate specificities. We found that sialidases in the human promyelocytic leukemic cell line HL60 were able to cleave sialic acid substrates with fluorinated C-5 modifications, in some cases to a greater
Fluorescent Live-Cell Imaging of Metabolically Incorporated Unnatural Cyclopropene-Mannosamine Derivatives
作者:Christian M. Cole、Jun Yang、Jolita Šečkutė、Neal K. Devaraj
DOI:10.1002/cbic.201200719
日期:2013.1.21
partners. Here, we demonstrate that methylcyclopropenes can meet the stringent steric demands required for metabolicimaging of unnatural mannosamines on live cells. Using sequential azide–alkyne chemistry, we also demonstrate multicolor imaging of two different metabolicallyincorporatedunnatural sugars.
A facile synthesis of a useful 5-N-substituted-3,5-dideoxy-d-glycero-d-galacto-nonulosonic acid from 2-acetamido-2-deoxy-d-glucose
作者:Wen-Yang Wu、Betty Jin、David C.M. Kong、Mark von Itzstein
DOI:10.1016/s0008-6215(97)00020-7
日期:1997.5
The chemoenzymic synthesis of the sialic acid Neu5Boc from the commercially-available carbohydrate N-acetyl-D-glucosamine is presented, A basic resin-catalysed epimerisation of N-acetyl-D-glucosamine to N-acetyl-D-mannosamine is also discussed. (C) 1997 Elsevier Science Ltd.
US7462746B2
申请人:——
公开号:US7462746B2
公开(公告)日:2008-12-09
Chemoenzymatic Synthesis of Sialic Acid Derivatives Using Immobilized<i>N‐</i>Acetylneuraminate Lyase in a Continuous Flow Reactor
作者:Victor R. L. J. Bloemendal、Sam J. Moons、Jurriaan J. A. Heming、Mohamed Chayoua、Olaf Niesink、Jan C. M. van Hest、Thomas J. Boltje、Floris P. J. T. Rutjes
DOI:10.1002/adsc.201900146
日期:2019.6.6
The synthesis of N‐acetylneuraminic acid (Neu5Ac) derivatives is drawing more and more attention in glycobiology research because of the important role of sialicacids in e. g. cancer, bacterial, and healthy cells. Chemical preparation of these carbohydrates typically relies on multistep synthetic procedures leading to low overall yields. Herein we report a continuous flow process involving N‐acetylneuraminate