作者:Oleg D. Demekhin、Oleg N. Burov、Mikhail E. Kletskii、Anton V. Lisovin、Sergey V. Kurbatov、Elena A. Bereznyak、Alena V. Trishina
DOI:10.1007/s10593-022-03067-w
日期:2022.2
13-vinylberberines were stable in their reduced form due to significant intramolecular electron density transfer from berberine ring system to the vinyl moiety bearing electron-withdrawing groups. It was demonstrated that berberine derivatives may exist not only in ion pair form consisting of organic cation and inorganic anion, but also as zwitterionic structures featuring significant intramolecular charge transfer
通过实验证明了获得电中性取代的 13-乙烯基小檗碱的可能性6-31++G(d,p) 基组中的量子化学 DFT/B3LYP 计算。引入通过乙烯基部分缀合的药效团片段为小檗碱的结构修饰开辟了新的可能性,使热带性向超分子生物结构发生显着变化。由于从小檗碱环系统到带有吸电子基团的乙烯基部分的显着分子内电子密度转移,新合成的 13-乙烯基小檗碱在还原形式下是稳定的。研究表明,小檗碱衍生物不仅可以以有机阳离子和无机阴离子的离子对形式存在,还可以以两性离子结构的形式存在,具有显着的分子内电荷转移。获得的13-乙烯基小檗碱具有抗高致病性的生物活性。霍乱弧菌。