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Aridoss, Gopalakrishnan,Jeong, Yeon-Tae Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
Yttrium(III) acetate hydrate-catalyzed novel synthesis of 3,4-dihydropyrimidin-2(1H)-(thio)one derivatives was achieved through one-pot three-component condensation of diversified aldehydes, $\beta$-ketoesters and urea or N-methylurea or thiourea with a molar ratio of 1:1:1.4. In comparison to the classical Biginelli approach, this catalytic method has the advantages of short reaction time and improved product yield.
Gopalakrishnan Aridoss,Yeon Tae Jeong 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
Yttrium(III) acetate hydrate-catalyzed novel synthesis of 3,4-dihydropyrimidin-2(1H)-(thio)one derivatives was achieved through one-pot three-component condensation of diversified aldehydes, β-ketoesters and urea or N-methylurea or thiourea with a molar ratio of 1:1:1.4. In comparison to the classical Biginelli approach, this catalytic method has the advantages of short reaction time and improved product yield.
Synthesis, Spectral and Antimicrobial Studies of Some N(2)-Substituted Tetrahydroindazoles
Amirthaganesan, Shanmugasundaram,Aridoss, Gopalakrishnan,Park, Keun-Soo,Lim, Kwon-Taek,Jeong, Yeon-Tae Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.5
A series of N(2)-benzothiazolyl substituted tetrahydroindazoles has been synthesized via cyclic ${\beta}$ keto esters. Optimum reaction condition was found as acidic toluene and effect of higher acidity towards substituted hydrazines in situ was described. Synthesized compounds have been achieved as single isomer and characterized by using 1D and 2D NMR spectral reports. Antimicrobial screening was carried out for the synthesized compounds along with a series of N(2)-pyridyl tetrahydroindazoles.1 The results of the in vitro antimicrobial screening studies revealed that compounds 13, 16 against Staphylococcus aureus, 11 against Escherichia coli, 10-12, 16 against Pseudomonas aeruginosa and 12 against Klebsiella pneumoniae recorded almost two-fold better activity compared to the standard drug used.
Synthesis, Spectral and Antimicrobial Studies of Some N(2)-Substituted Tetrahydroindazoles
Shanmugasundaram Amirthaganesan,Gopalakrishnan Aridoss,Keun Soo Park,임권택,정연태 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.5
A series of N(2)-benzothiazolyl substituted tetrahydroindazoles has been synthesized via cyclic β keto esters. Optimum reaction condition was found as acidic toluene and effect of higher acidity towards substituted hydrazines in situ was described. Synthesized compounds have been achieved as single isomer and characterized by using 1D and 2D NMR spectral reports. Antimicrobial screening was carried out for the synthesized compounds along with a series of N(2)-pyridyl tetrahydroindazoles.1 The results of the in vitro antimicrobial screening studies revealed that compounds 13, 16 against Staphylococcus aureus, 11 against Escherichia coli, 10-12, 16 against Pseudomonas aeruginosa and 12 against Klebsiella pneumoniae recorded almost two-fold better activity compared to the standard drug used.