Reaction of 2,4-di-Eert-butyl-phenol,ethylenediamine and formaldehyde （37% solution in water）in 2:1:5molar ratio in methanol afforded the 1,2-bis[3-（6,8-di-tert-butyl-3,4-dihydro-2[H]-1,3-benzoxazine）-yl]ethane in...Reaction of 2,4-di-Eert-butyl-phenol,ethylenediamine and formaldehyde （37% solution in water）in 2:1:5molar ratio in methanol afforded the 1,2-bis[3-（6,8-di-tert-butyl-3,4-dihydro-2[H]-1,3-benzoxazine）-yl]ethane in high yields.This compound was fully characterized by elemental analysis,1H NMR,MS,and IR spectroscopies.The crystal structure of the title compound was determined by X-ray diffraction method.It crystallizes in triclinic,space group P（1）,a=0.5727（2）,b=0.9268（3）,c=1.4666（4）nm,a=88.12（1）°,β=88.54（1）°,γ=80.82（1）°,V=0.7679（4）nm3,Z=1,DC=1.126Mg·m-3,F（000）=286,μ（MoKα）=0.69cm-1,R=0.048,wR=0.140.This compound had a centrosymmetrical structure.展开更多
Several 6,8-dichloroquinolone analogues were synthesized from the key intermediate compound of 2,3,4,5-tetrachlorobenzene carbonyl chloride, which was obtained from the starting material of tetrachlorophthalic anhydri...Several 6,8-dichloroquinolone analogues were synthesized from the key intermediate compound of 2,3,4,5-tetrachlorobenzene carbonyl chloride, which was obtained from the starting material of tetrachlorophthalic anhydride. Their in vitro antibacterial activities were evaluated. As a result of this study, compounds 21e and 21d were twofold more potent than ciprofloxacin （CPFX） and norfloxacin （NFLX） against Staphylococcus aureus-9, and with the same potent as CPFX and NFLX while against Escherichia coli-2, but were less potent than references in against Pseudomonas aeruginosa-17.展开更多
文摘Reaction of 2,4-di-Eert-butyl-phenol,ethylenediamine and formaldehyde （37% solution in water）in 2:1:5molar ratio in methanol afforded the 1,2-bis[3-（6,8-di-tert-butyl-3,4-dihydro-2[H]-1,3-benzoxazine）-yl]ethane in high yields.This compound was fully characterized by elemental analysis,1H NMR,MS,and IR spectroscopies.The crystal structure of the title compound was determined by X-ray diffraction method.It crystallizes in triclinic,space group P（1）,a=0.5727（2）,b=0.9268（3）,c=1.4666（4）nm,a=88.12（1）°,β=88.54（1）°,γ=80.82（1）°,V=0.7679（4）nm3,Z=1,DC=1.126Mg·m-3,F（000）=286,μ（MoKα）=0.69cm-1,R=0.048,wR=0.140.This compound had a centrosymmetrical structure.
文摘Several 6,8-dichloroquinolone analogues were synthesized from the key intermediate compound of 2,3,4,5-tetrachlorobenzene carbonyl chloride, which was obtained from the starting material of tetrachlorophthalic anhydride. Their in vitro antibacterial activities were evaluated. As a result of this study, compounds 21e and 21d were twofold more potent than ciprofloxacin （CPFX） and norfloxacin （NFLX） against Staphylococcus aureus-9, and with the same potent as CPFX and NFLX while against Escherichia coli-2, but were less potent than references in against Pseudomonas aeruginosa-17.
