All principal candesartan cilexetil impurities and/or degradation products were synthesized and identified. The differentiation of N-1 and N-2 ethylated candesartan cilexetil derivatives was performed using 1D and 2D NMR experiments. The influence of the magnetic field on the resolution and sensitivity of NMR experiments is shown. Selective hydrolysis of these compounds then provided corresponding producrs of hydrolysis of the ethoxy group.
所有主要的坎地沙坦西乐沙胺杂质和/或降解产物均已合成并鉴定。通过1D和2D核磁共振实验区分了N-1和N-2乙基化坎地沙坦西乐沙胺衍生物。磁场对核磁共振实验的分辨率和灵敏度的影响得到展示。随后对这些化合物进行选择性水解,得到了相应的乙氧基水解产物。