[EN] HYDROLASE ENZYME SUBSTRATES AND USES THEREOF<br/>[FR] SUBSTRATS D'ENZYME HYDROLASE ET LEURS UTILISATIONS
申请人:GEN ATOMICS
公开号:WO2012099904A1
公开(公告)日:2012-07-26
The present invention provides novel methods for determining the presence or amount of a hydrolytic enzyme in a sample, based on novel substrates for the enzymes, and also provides compositions and methods that provide highly sensitive assay methods for such hydrolytic enzymes.
Synthesis, Biological Activity of Salidroside and Its Analogues
作者:Yibing Guo、Yahong Zhao、Cheng Zheng、Ying Meng、Yumin Yang
DOI:10.1248/cpb.58.1627
日期:——
Salidroside is a phenylpropanoid glycoside isolated from Rhodiola rosea L., a traditional Chinese medicinal plant, and has displayed a broad spectrum of pharmacological properties. In this paper, about 18 novel salidroside analogues were prepared through Koenigs–Knorr method, the effects of these compounds over PC12 was assessed with the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The novel compounds differ in the substituents attached to the benzene ring or in the glycosyl donor. According to the data, compounds (3,5-dimethoxyphenyl)methyl β-D-glucopyranoside and (3,5-dimethoxyphenyl)methyl β-D-galactopyranoside with methoxy group at 3 and 5-positions of the benzene ring were the most viability at concentration of 300 μmol/l and 60 μmol/l, respectively.
2,4,6-Trichloro-1,3,5-triazine (TCT) mediated one-pot sequential functionalisation of glycosides for the generation of orthogonally protected monosaccharide building blocks
Orthogonally protected monosaccharide building blocks have been prepared using TCT in a one-pot multicomponent transformation. The process involves successive steps of arylidene acetalation, esterification and regioselective reductive acetal cleavage. High regioselectivity, scope for using a broad range of substrates, functional group tolerance, mild reaction conditions, easy handling process and wide application range are a few advantages of the current process.
A novel strategy to improve the aromatic alcohols tolerance of enzyme for preparative-scale synthesis of natural glycosides
作者:Youzhi Zhou、Lu Zhao、Ke Liu、Jinsong Zhang、Jianlin Chu、Bingfang He
DOI:10.1016/j.catcom.2017.07.025
日期:2017.12
Aromatic alcohols are liable to result in enzyme inactivation. A novel strategy was established for improving the aromatic alcohol tolerance of β-galactosidase (BMG) from Bacillus megaterium YZ08. The half-life of BMG in 200 mM vanillyl alcohol solution was dramatically increased by 9–123 times with the addition of hydrophilic solvents. In 30% DMSO, the reaction concentration of aromatic alcohol could
The present invention provides novel methods for determining the presence or amount of a hydrolytic enzyme in a sample, based on novel substrates for the enzymes, and also provides compositions and methods that provide highly sensitive assay methods for such hydrolytic enzymes.