1,3-Dipolar cycloadditions between azides and alkynes were exploited to attach oligosaccharides to a C-14 hydrocarbon chain that noncovalently binds to the microtiter well surface. Synthesis of sugar arrays was performed on a micromolar scale in situ in the microtiter plate. As a model study, the beta-galactosyllipid 5 was displayed on a 4-mumol scale. Formation of product was confirmed via ESI-MS, and the yield was determined via chemical and biological assays. Several complex carbohydrates (6-16) were also displayed in microtiter plates and successfully screened with various lectins. Moreover, sialyl Lewis x (17) was synthesized via the enzymatic fucosylation of a precursor displayed in the plate. Studies on inhibition of this biotransformation have been carried out, and the IC50 value found for the known inhibitor 20 was consistent with previous studies in solution.
1,3-Dipolar cycloadditions between azides and alkynes were exploited to attach oligosaccharides to a C-14 hydrocarbon chain that noncovalently binds to the microtiter well surface. Synthesis of sugar arrays was performed on a micromolar scale in situ in the microtiter plate. As a model study, the beta-galactosyllipid 5 was displayed on a 4-mumol scale. Formation of product was confirmed via ESI-MS, and the yield was determined via chemical and biological assays. Several complex carbohydrates (6-16) were also displayed in microtiter plates and successfully screened with various lectins. Moreover, sialyl Lewis x (17) was synthesized via the enzymatic fucosylation of a precursor displayed in the plate. Studies on inhibition of this biotransformation have been carried out, and the IC50 value found for the known inhibitor 20 was consistent with previous studies in solution.
Halopropiolamide compound, production and use thereof
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0649835A1
公开(公告)日:1995-04-26
There are provided with a novel N-substituted-3-halopropiolamide compound, a method of producing the compound, and a composition for controlling noxious organisms containing the compound. The present compound exhibits superior antimicrobial and antifungal effects. Pest control agents containing the compound can advantageously be used for wide applications.
N-substituted-3-iodopropiolamide, production and use thereof
申请人:TAKEDA CHEMICAL INDUSTRIES, LTD.
公开号:EP0519427B1
公开(公告)日:1995-04-26
US5538998A
申请人:——
公开号:US5538998A
公开(公告)日:1996-07-23
Synthesis of Sugar Arrays in Microtiter Plate
作者:Fabio Fazio、Marian C. Bryan、Ola Blixt、James C. Paulson、Chi-Huey Wong
DOI:10.1021/ja020887u
日期:2002.12.1
1,3-Dipolar cycloadditions between azides and alkynes were exploited to attach oligosaccharides to a C-14 hydrocarbon chain that noncovalently binds to the microtiter well surface. Synthesis of sugar arrays was performed on a micromolar scale in situ in the microtiter plate. As a model study, the beta-galactosyllipid 5 was displayed on a 4-mumol scale. Formation of product was confirmed via ESI-MS, and the yield was determined via chemical and biological assays. Several complex carbohydrates (6-16) were also displayed in microtiter plates and successfully screened with various lectins. Moreover, sialyl Lewis x (17) was synthesized via the enzymatic fucosylation of a precursor displayed in the plate. Studies on inhibition of this biotransformation have been carried out, and the IC50 value found for the known inhibitor 20 was consistent with previous studies in solution.