2-(Benzothiazol-2-yl)-phenyl-β-d-galactopyranoside derivatives as fluorescent pigment dyeing substrates and their application for the assay of β-d-galactosidase activities
摘要:
2-(Benzothiazol-2-yl)-phenyl-beta-D-galactopyranoside derivatives were synthesized as novel artificial fluorescent pigment dyeing substrates for beta-D-galactosidase. The substrates, which exhibited non-fluorescence or weak fluorescence in solution phase, were smoothly hydrolyzed by beta-D-galactosidase from Aspergillus oryzae and yielded a water-insoluble strong fluorescent pigment. The difference of fluorescent intensity exhibited a linear relationship with the amount of enzyme. (C) 2013 Elsevier Ltd. All rights reserved.
[EN] NOVEL USE OF BENZOTHIAZOLE DERIVATIVES<br/>[FR] NOUVELLE UTILISATION DE DERIVES DE BENZOTHIAZOLE
申请人:ASTRAZENECA AB
公开号:WO2004016600A1
公开(公告)日:2004-02-26
The use of compounds of formula (I) wherein X, A, B, D, R1 and R2 are as defined in the Specification and pharmaceutically acceptable salts thereof in the manufacture of a medicament for the treatment or prophylaxis of diseases or conditions in which inhibition of kinase Itk activity is beneficial is disclosed. Certain novel compounds of formula (I), together with processes for their preparation, compositions containing them and their use in therapy are also disclosed.
precise control of the oxidation pathways so that directing groups can be either preserved or cleaved. We found that N-phenoxyacetamides could undergo ortho-arylation reactions with or without an external oxidant, yielding products with different oxidation states, notably the rare bis-arylated phenols. Notably, a unique rhodacycle intermediate was isolated, characterized by X-ray crystallography, and
Metallaphotoredox-Mediated C<sub>sp2</sub>–H Hydroxylation of Arenes under Aerobic Conditions
作者:Sk. Sheriff Shah、Amrita Paul、Manoranjan Bera、Yarra Venkatesh、N. D. Pradeep Singh
DOI:10.1021/acs.orglett.8b01973
日期:2018.9.21
The direct hydroxylation of 2-arylpyridines and 2-arylbenzothiazoles via the merger of organic photoredox and metal catalysis is reported where 4CzIPN is used as the visible-light photocatalyst and Pd(OAc)2 as the metal catalyst. This method has been employed to synthesize organic molecules exhibiting excited-stateintramolecularprotontransfer properties for generating tunable luminescence responses
A convenient synthesis of 2-(2-(difluoromethoxy)aryl)benzo[d]thiazoles from 2- (o-hydroxyaryl)benzothiazoles and commercially available ethyl difluoroiodoacetate (ICF2CO2Et) is described. The transformation was amenable to a one-pot, sequential three-component protocol from o-hydroxybenzaldehyde, o-aminothiophenol, and ICF2CO2Et promoted by KOH. Additionally, some of the prepared compounds exhibited
描述了由2-(邻-羟基芳基)苯并噻唑和可商购的二氟碘乙酸乙酯(ICF 2 CO 2 Et)方便地合成2-(2-(二氟甲氧基)芳基)苯并[d]噻唑的方法。变换为适合于从一釜,顺序三组分协议ö羟基苯甲醛,ø -aminothiophenol,和ICF 2 CO 2的Et促进由KOH。另外,一些制备的化合物对人卵巢癌细胞显示出有希望的活性。
Regioselective ortho-hydroxylation of 2-arylbenzothiazole via substrate directed C–H activation
作者:Arghya Banerjee、Anupam Bera、Srimanta Guin、Saroj Kumar Rout、Bhisma K. Patel
DOI:10.1016/j.tet.2012.12.067
日期:2013.3
An efficient protocol has been developed for the direct ortho-hydroxylation of 2-arylbenzothiazole using Pd(OAc)2 as the catalyst and either of DIB/AcOH or Oxone®/TFA combinations under air atmosphere. Under both these conditions, the methodology tolerates a diverse array of substituents giving good to excellent yields of corresponding ortho-hydroxylated products. Regioselective hydroxylation is observed