确定了互变异构体及过渡态的几何构型、相对能量和活化能。
The geometries, relative energies, and activation energy of the tautomer and transition state were determined.
通过对其吸收光谱的研究，证明荧光素钠在乙醇溶液中存在多种互变异构体。
By studying the absorption spectra, we have verified the existence of various tautomers of sodium fluorescein in ethanol solution.
还对分子内的受阻旋转、活泼氢状态以及互变异构体的动力学现象作了讨论。
The states of active hydrogens, the hindered rotation within molecules and the kinetic phenomena of tautomerism have also been discussed.
一化合物，在溶液中存在酮式与烯醇式互变异构体，普通液相柱中能否分开？
It does not make any sense that trying to separate the tautomers of enol and ketone.
发现有两个势阱：其中一个对应正常的胞嘧啶，而另一个则对应它的顺式亚胺式互变异构体。
Two potential Wells are found. One corresponds to the normal cytosine, while the other corresponds to its imino tautomer.
本发明涉及具有以下结构式i的新颖化合物及其可药用盐或互变异构体、使用它们的组合物和使用它们的方法。
This invention relates to novel compounds having the structural Formula I below: and their pharmaceutically acceptable salts or tautomers, compositions and methods of use thereof.
本发明涉及具有以下结构式i的新颖化合物及其可药用盐或互变异构体、使用它们的组合物和使用它们的方法。
This invention relates to novel compounds having the structural Formula I below: and their pharmaceutically acceptable salts or tautomers, compositions and methods of use thereof.
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