3,5-Dichloro-4-pyridinecarbonitrile as a Key Reagent in a Synthesis of Copper Containing Amine Oxidase Inhibitors
摘要:
Various synthetic approaches to 3,4,5-trifunctionalized pyridine derivatives useful as benzylamine oxidase inhibitors are extensively explored. Fully satisfactory preparations of the inhibitors 3,5-diethoxy-4-aminomethylpyridine (4), 3,5-bis(3-hydroxypropoxy)-4-aminomethylpyridine (11), 3,5-bis(4-hydroxybutoxy)-4- aminomethylpyridine (12) and 3-ethoxy-5-phenylmethoxy-4-aminomethylpyridine (16), all in the form of dihydrochloride salt, using 3,5-dichloro-4-pyridinecarbonitrile as key precursor, are reported.
3,5-Dichloro-4-pyridinecarbonitrile as a Key Reagent in a Synthesis of Copper Containing Amine Oxidase Inhibitors
摘要:
Various synthetic approaches to 3,4,5-trifunctionalized pyridine derivatives useful as benzylamine oxidase inhibitors are extensively explored. Fully satisfactory preparations of the inhibitors 3,5-diethoxy-4-aminomethylpyridine (4), 3,5-bis(3-hydroxypropoxy)-4-aminomethylpyridine (11), 3,5-bis(4-hydroxybutoxy)-4- aminomethylpyridine (12) and 3-ethoxy-5-phenylmethoxy-4-aminomethylpyridine (16), all in the form of dihydrochloride salt, using 3,5-dichloro-4-pyridinecarbonitrile as key precursor, are reported.
fine‐tuning the binding constants, the charge‐separation kinetics, and the charge‐recombination kinetics. To this end, the binding constants, which ranged from log Kassoc=3.94–4.38, are dominated by axial coordination, with minor contributions from the orbital overlap of the curved and planar π systems. The charge‐separation and charge‐recombination kinetics, which are in the order of 1010 and 108 s−1
首次出现了一个C 60衍生物(1)和两个不同的镧金属富勒烯镧衍生物La @ C 82 Py(2)和La 2 @C 80 Py(3),它们的特征是吡啶基作为过渡的配位位点-已经合成了金属离子,并将其作为电子受体整合到协调的电子给体/电子受体杂化体中。在这方面,四苯基卟啉锌(ZnP)作为激发态电子供体。我们通过稳态和时间分辨光物理技术进行的研究发现,在所有这些系统(即1 / ZnP)中,电子转移控制着激发态的失活。,2 / ZnP和3 / ZnP,而在基态下,则缺乏明显的电子相互作用。电子接受富勒烯或金属富勒烯部分的变化为微调结合常数,电荷分离动力学和电荷重组动力学提供了动力。为此,结合常数范围为log K assoc = 3.94-4.38,主要由轴向配位决定,弯曲和平面π系统的轨道交叠贡献很小。电荷分离和电荷重组动力学,顺序为10 10和10 8 s -1分别与富勒烯和金属富勒烯的还原电位有关。