以下为句子列表:
英文: Vanadium complexes with catecholate or pyrazine 2-carboxylate ligands were prepared and characterized by Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance spectroscopy, ultraviolet-visible spectroscopy, and elemental analysis.
中文: 制备了含苯磷二酚配体或吡嗪-2-羟酸酯配体的钒配合物,并运用傅里叶变换红外光谱、核磁共振谱、紫外-可见光谱及元素分析对其进行了表征。
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英文: Pazulfloxacin was synthesized by condensation of ethyl (S)-9,0-difluoro- -methyl-7-oxo-, -dihydro-pyrido[,, -de][,] benzoxazine--carboxylate with ethyl cyanoacetate, decarboxylation, cyclization, hydrolysis and Hoffman reaction in an overall yield of %.
中文: 以左氟沙星中间体 (S) - 9,0 -二氟 - -甲基 - 7-氧代 - , -二氢 - 7H-吡啶 [, , - de][,]苯并嗪 - -羧酸乙酯为原料 ,经与氰乙酸乙酯缩合、脱羧、环合、水解及 Hoffm an降解制得帕珠沙星 ,总收率 %。
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