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Jiyaul Haque,K.R. Ansari,Vandana Srivastava,M.A. Quraishi,I.B. Obot 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.49 No.-
The corrosion inhibition performance of two pyrimidine derivatives namely 5-styryl-2,7-dithioxo-2,3,5,6,7,8-hexahydropyrimido[4,5-d] pyrimidin-4(1H) one (PP-1) and 5-(2-hydroxyphenyl)-2,7-dithioxo-2,3,5,6,7,8-hexahydropyrimido[4,5-d]-pyrimidin-4(1H) one (PP-2) on N80 steel corrosion in15% HCl has been studied using gravimetric method, electrochemical impedance spectroscopy (EIS),potentiodynamic polarization, atomic force microscopy (AFM), scanning electron microscopy (SEM), DFT,molecular electrostatic potential and Monte Carlo simulation. The corrosion inhibition efficiencies atoptimum concentration (250 mg/L) are 89.1% (PP-1) and 73.1% (PP-2) respectively at 308 K. The corrosioninhibition efficiency increases with increase in concentration and decreases with temperature. PPsobeyed Langmuir adsorption isotherm. AFM and SEM analyses supported formation of protectivefilm onN80 steel in presence of inhibitors. DFT and Monte Carlo simulation calculations supported experimentalresults.
Riad, Bahia Y.,Abdelhamid, Abdou O. The Pharmaceutical Society of Korea 1989 Archives of Pharmacal Research Vol.12 No.2
Several new 1,2,4-triazolo[5,1-a]pyrimidine derivatives were synthesized via the reactions of 3-amino-1,2,4-triazole with active methylene nitrites and thier ylidene derivatives. The structures assigned for the reaction products were based on elemental analyses and spectral data.
Synthesis of a New 4-(Pyridin-3-yl)pyrimidine Derivatives for Anticancer Activity
Jung, Se-Jin,El-Deeb, Ibrahim Mustafa,Lee, So-Ha The Korean Society of Applied Science and Technolo 2009 한국응용과학기술학회지 Vol.26 No.1
This study is focused on the synthesis of urea and amide derivatives particularly, since the amide moiety is an essential binding group at the binding site. Urea derivatives 3-7 and 13-14 were obtained by reaction of 2-aminopyrimidines and other amines with diverse isocyanates in pyridine as a solvent under reflux. The urea derivatives were obtained in low yield because of the highly electron deficient nature of the amino group of the 2-aminopyrimidine. Amide derivatives 8-10 were obtained in moderate yields by reaction of compound 1 with aryl chloride derivatives. Also, arylamine 11 was synthesized by Buchwald-Hartwig amination in moderate yields. Most of the compound did not show good activity against A375P melanoma cells, compared with Sorafenib as control compound.
Choi, Won-Sik,Nam, Seok-Woo,Ahn, Eun-Kyung,Park, Byeoung-Soo,Lee, Sung-Eun,Kim, Tae-Jun,Choi, In-Young The Korean Society for Applied Biological Chemistr 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.2
The fungicidal activities against phytopathogenic fungi of two aminothiazole compounds of N-[4-(4-fluoro)phenyl-2-aminothiazol-5-yl]pyrimidin-2-yl-N-subst. phenylamine (V-1, V-2) have been determined and these two compounds were used as the leading compounds in this study as V-1 for N-[4-(4-fluoro)phenyl-2-aminothiazol-5-yl]pyrimidin-2-yl-N-(3-hydroxymethyl)phenylamine and V-2 for N-[4-(4-fluoro)phenyl-2-aminothiazol-5-yl]pyrimidin-2-yl-N-3-(1-hydroxyethyl)phenylamine. Further syntheses of these two compounds, V-1 and V-2, were conducted by reacting them with three functional groups, 2-(N-ethoxycarbonyl)piperidin-4-yl, 2-piperidin-4-yl, and 2-(N-methyl)-piperidin-4-yl-thiazole. From this scheme, 21 compounds were newly synthesized and their structures were confirmed by $^1H$-NMR-spectrum. The fungicidal activities of all the synthesized compounds against Phytophthora capsici were examined using the whole plant method. While the $EC_{50}$ value of the commercial fungicide dimethomorph was 4.26 mM, that of IX-3g on P. capsici was 1.03 mM. Among the 21 chemicals, IX-3g showed the most potential antifungal activity in vivo. Therefore, IX-3g may be considered as a potential candidate for the control of phytopathogenic diseases characterized by P. capsici infection, and further studies will be conducted on the mode of action IX-3g.
Won Sik Choi,Seok Woo Nam,Eun Kyung Ahn,Byeoung Soo Park,Sung Eun Lee,Tae Jun Kim,In Young Choi 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.2
The fungicidal activities against phytopathogenic fungi of two aminothiazole compounds of N-[4-(4-fluoro)phenyl-2-aminothiazol-5-yl]pyrimidin-2-yl-N-subst. phenylamine (V-1, V-2) have been determined and these two compounds were used as the leading compoun
Yang, Zunhua,Fang, Yuanying,Park, Haeil Pergamon Press 2017 Bioorganic & medicinal chemistry letters Vol.27 No.11
<P><B>Abstract</B></P> <P>A class of novel pyrimidine derivatives bearing diverse conformationally restricted azabicyclic ether/amine were designed, synthesized and evaluated for their GPR119 agonist activities against type 2 diabetes. Most compounds exhibited superior hEC<SUB>50</SUB> values to endogenous lipid oleoylethanolamide (OEA). Analogs with 2-fluoro substitution in the aryl ring showed more potent GPR119 activation than those without fluorine. Especially compound <B>27m</B> synthesized from <I>endo</I>-azabicyclic alcohol was observed to have the best EC<SUB>50</SUB> value (1.2nM) and quite good agonistic activity (112.2% max) as a full agonist.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Pusu Zhao,Wang Jing,Long Jing,FangFangJian,Yufeng Li 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.12
A tetradentate ligand of 2-phenyl-4,6-di(pyridin-2-yl)pyrimidine (L) has been synthesized and its complexes with ZnI2 and CuI have been obtained by hydrothermal method. single crystal X-ray diffraction analysis indicates that ligand L coordinates with Zn(II) ions to form a simple four-coordinate di-nuclear complex, while the complexation of L with Cu(I) constructs a one-dimensional chain polymer. The existence of I– ion hampers the L to assemble grid-type complexes with Zn(II) and Cu(I). Fluorescence spectra show that the L emits blue fluorescence while its Cu(I) polymer decrease the fluorescence intensity and Zn(II) complex quenches the fluorescence.
Zhao, Pusu,Jing, Wang,Jing, Long,Jian, Fangfang,Li, Yufeng Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.12
A tetradentate ligand of 2-phenyl-4,6-di(pyridin-2-yl)pyrimidine (L) has been synthesized and its complexes with $ZnI_2$ and CuI have been obtained by hydrothermal method. single crystal X-ray diffraction analysis indicates that ligand L coordinates with Zn(II) ions to form a simple four-coordinate di-nuclear complex, while the complexation of L with Cu(I) constructs a one-dimensional chain polymer. The existence of $I^-$ ion hampers the L to assemble grid-type complexes with Zn(II) and Cu(I). Fluorescence spectra show that the L emits blue fluorescence while its Cu(I) polymer decrease the fluorescence intensity and Zn(II) complex quenches the fluorescence.