Synthesis and biological activity of semisynthetic silicon-containing penicillins and cephalosporins
作者:G. A. Veinberg、A. M. Katz、É. P. Popova、É. Ya. Lukevits、É. A. Rudzit、G. N. Neshchadim、T. P. Radkevich
DOI:10.1007/bf00765661
日期:1980.10
The structure of the obtained compounds was confirmed by elemental analysis and spectrometry. UV spectra of the semisynthetic cephalosporins contain a characteristic absorption band in the 260-262 nm region. Three bands were detected in the IR spectra of penicillins and cephalosporins in the region of 1610-1600, 1690-1670, and 1780-1770 cm-: assigned to carbonyl stretching vibrations of amide, ionized
所得化合物的结构经元素分析和光谱分析确证。半合成头孢菌素的紫外光谱在 260-262 nm 区域包含一个特征吸收带。在 1610-1600、1690-1670 和 1780-1770 cm-范围内的青霉素和头孢菌素的红外光谱中检测到三个带:分别分配给酰胺、电离羧基和 8-1 内酰胺基团的羰基伸缩振动。除了 8-1 内酰胺、噻唑烷和 A3-二氢噻嗪环的质子的化学位移外,在抗生素的 PMR 光谱中观察到 AsBm 型多重峰,这是与硅相连的乙基质子的特征。