An azo coupling of berberine derivatives: an experimental and quantum-chemical study
作者:Andrey A. Popov、Angelina N. Dryapak、Oleg N. Burov、Mikhail E. Kletskii、Alexander D. Zagrebaev、Anna V. Tkachuk、Sergey V. Kurbatov、Anna V. Aleshukina、Elena V. Goloshova、Kristina G. Markova、Iraida S. Berezinskaya、Tatiana I. Tverdokhlebova
DOI:10.1007/s10593-023-03239-2
日期:2023.8
B3LYP/6-31G(d,p) basis set. In weakly alkaline media, berberrubine can be substituted at position 12 by azo coupling reactions with aryldiazonium salts. This process proceeds in steps: first, berberrubine transforms into the zwitterionic form of 9-oxoberberine, which then enters as a nucleophile into an azo coupling reaction with aryldiazonium salts to form a single product with the trans configuration of
通过实验和基于 B3LYP/6-31G(d,p) 基组中的密度泛函理论的量子化学计算证明了合成 12-(芳基重氮)小檗红素的可能性。在弱碱性介质中,小檗红素可通过与芳基重氮盐的偶氮偶联反应在 12 位被取代。该过程分步骤进行:首先,小檗红素转化为两性离子形式的 9-氧化小檗碱,然后作为亲核试剂进入与芳基重氮盐的偶氮偶联反应,形成单一产物,其片段相对于 N= 为反式构型。 N双键。由此产生的 12-(芳基重氮基)小檗红素可用作抗生素药物,如多重耐药性鲁氏不动杆菌培养物中所示。