1917-1919 1917 molecule, into a Cz and a C, unit, had occurred prior to entry into pyridoxol, then deuterium would have been incorporated not only into C-2' and C-4', as observed, but also into C-5' (c.f., ref 3). Because of the superposition of signals at 6 4.95 ppm in the 2H NMR spectrum of labeled pyridoxol hydrochloride in methanol (Figure 1B) and the unfavorable signal-to-noise ratio in the difference
1917-1919 1917 年的分子,在进入
吡哆醇之前已经发生了一个 Cz 和一个 C 单元,然后
氘不仅会被并入 C-2' 和 C-4',如所观察到的,还会被并入 C- 5'(参见,参考文献 3)。由于在
甲醇中标记的
盐酸吡哆醇的 2H NMR 谱中 6 4.95 ppm 处的信号叠加(图 1B)和差谱中不利的信噪比(图 1C)比率,信号面积在