The synthesis of (<i>Z</i>)-4-oxo-4-(arylamino)but-2-enoic acids derivatives and determination of their inhibition properties against human carbonic anhydrase I and II isoenzymes
作者:Koray Oktay、Leyla Polat Köse、Kıvılcım Şendil、Mehmet Serdar Gültekin、İlhami Gülçin、Claudiu T. Supuran
DOI:10.3109/14756366.2015.1071808
日期:2016.11.1
spectroscopy. Carbonic anhydrase is a metalloenzyme involved in many crucial physiologic processes as it catalyzes a simple but fundamental reaction, the reversible hydration of carbon dioxide to bicarbonate and protons. Significant results were obtained by evaluating the enzyme inhibitory activities of these derivatives against human carbonic anhydrase hCA I and II isoenzymes (hCA I and II). Butenoic
Synthesis of 3-chloro-1-substituted aryl pyrrolidine-2,5-dione derivatives: discovery of potent human carbonic anhydrase inhibitors
作者:Koray Oktay、Leyla Polat Kose、Kıvılcım Şendil、Mehmet Serdar Gültekin、İlhami Gülçın
DOI:10.1007/s00044-017-1865-2
日期:2017.8
spectroscopy. Their biological activities were studied against human carbonic anhydrase I, and II. The 3-chloro-1-aryl pyrrolidine-2,5-diones strongly inhibited the activity of human carbonic anhydrase I and II, with K i values in the low nanomolar range of 23.27–36.83 nmol/L against human carbonic anhydrase I and 10.64–31.86 nmol/L against human carbonic anhydrase II.
DABCO-catalyzed [3+2] cycloaddition reactions of azomethine imines with N -aryl maleimides: facile access to dinitrogen-fused heterocycles
作者:Qianfa Jia、Lei Chen、Gongming Yang、Jian Wang、Jia Wei、Zhiyun Du
DOI:10.1016/j.tetlet.2015.11.030
日期:2015.12
DABCO-catalyzed [3+2] cycloaddition of azomethine imines with maleimides has been developed. This method could efficiently furnish dinitrogen-fused tetracyclic heterocycles in high levels of regioselectivity and with good yields.
Omuaru, V. O. T., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1998, vol. 37, # 8, p. 814 - 816
作者:Omuaru, V. O. T.
DOI:——
日期:——
Fluorescence and Aggregation Behavior of Poly(amidoamine) Dendrimers Peripherally Modified with Aromatic Chromophores: the Effect of Dendritic Architectures
PAMAM dendrimers of the zeroth to fifth generation (G0-5) have been peripherally modified with phenyl, naphthyl, pyrenyl, and dansyl chromophores. Their fluorescence behaviors are strongly affected by the dendritic architectures at different generations. These dendrimers modified with hydrophobic chromphores can self-organize into vesicular aggregates at the low generations G0-3 in water. The size and aggregation number of these vesicles decrease with increasing generation from G0 to G3. Critical aggregation concentration determined by fluorescence spectroscopy reveals that these aggregates can be favorably formed in the order of G3 > G2 > G1. In contrast to the vesicles made from traditional amphiphilic compounds, these dendrimer-based vesicles are very adhesive due to the H-bonding interaction and entanglement of dendritic branches located in the outer layer. A large number of multivesicle assemblies, i.e., "twins" and "quins" consisting of two and five vesicles, were clearly identifiable with transmission electron (TEM) and atomic force microscopy. For the dendrimers with peripheral pyrenyl chromophores, triangle-like vesicles were observed in water. The hydrophobic interphase thickness of the vesicular bilayer is ca. 2.0-3.2 nm determined by fluorescence resonance energy transfer methods, which agrees well with the thickness directly observed with TEM.