作者:Valentina Dichiarante、Luca Pretali、Elisa Fasani、Angelo Albini
DOI:10.1016/j.jphotochem.2013.05.015
日期:2013.8
analogues of fluoroquinolone drugs, viz. 1-ethyl-7-piperidino-8-fluoroquinol-4-one-3-carboxylic acid and 1-ethyl-7-piperidino-6,8-difluoroquinol-4-one-3-carboxylic acids have been synthesized and their photochemistry has been investigated. Both compound undergo photoheterolysis of the C8F bond generating a triplet cation that either inserts into the 1-alkyl chain or is trapped or reduced by external nucleophiles
氟喹诺酮药物的两种非两性离子类似物,即。合成了1-乙基-7-哌啶子基-8-氟喹啉-4-酮-3-羧酸和1-乙基-7-哌啶子基-6,8-二氟喹啉-4-酮-3-羧酸被调查。两种化合物都经历了C 8 F键的光杂解,从而生成三重态阳离子,该三重态阳离子要么插入1-烷基链中,要么被外部亲核试剂捕获或还原。该反应类似于用相应的(两性离子)7-哌嗪子衍生物观察到的反应,但是量子产率低约五倍。这支持了合理化的观点,即在后一种情况下,通过N + H键协助脱氟具有决定性作用。