Synthesis and Biological Evaluation of Liguzinediol Mono- and Dual Ester Prodrugs as Promising Inotropic Agents
作者:Jing Zhang、Wei Li、Hong-Mei Wen、Hao-Hao Zhu、Tian-Lin Wang、Dong Cheng、Kun-Di Yang、Yu-Qing Chen
DOI:10.3390/molecules191118057
日期:——
The potent positive inotropic effect, together with the relatively low safety risk of liguzinediol (LZDO), relative to currently available inotropic drugs, has prompted us to intensively research and develop LZDO as a potent positive inotropic agent. In this study, to obtain LZDO alternatives for oral chronic administration, a series of long-chain fatty carboxylic mono- and dual-esters of LZDO were synthesized, and preliminarily evaluated for physicochemical properties and bioconversion. Enhanced lipophilic properties and decreased solubility of the prodrugs were observed as the side chain length increased. All esters showed conspicuous chemical stability in phosphate buffer (pH 7.4). Moreover, the enzymatic hydrolysis of esters in human plasma and human liver microsomes confirmed that the majority of esters were converted to LZDO, with release profiles that varied due to the size and structure of the side chain. In vivo pharmacokinetic studies following oral administration of monopivaloyl (M5), monodecyl (M10) and monododecyl (M12) esters demonstrated the evidently extended half-lives relative to LZDO dosed alone. In particular the monopivaloyl ester M5 exhibited an optimal pharmacokinetic profile with appropriate physiochemical characteristics.
强效正性肌力作用,加上相对于目前可用的正性肌力药物,利格津醇(LZDO)的安全风险相对较低,这促使我们深入研究和开发LZDO作为一种强效正性肌力药物。在这项研究中,为了获取适合长期口服给药的LZDO替代品,合成了一系列长链脂肪羧酸单酯和双酯,并初步评估了它们的理化性质和生物转化。随着侧链长度的增加,观察到前药的疏水性增强和溶解度降低。所有酯在磷酸盐缓冲液(pH 7.4)中表现出明显的化学稳定性。此外,酯在人体血浆和人肝微粒体中的酶促水解确认大多数酯被转化为LZDO,释放曲线因侧链的大小和结构而有所不同。口服给药单丙酸酯(M5)、单癸酸酯(M10)和单十二酸酯(M12)之后的体内药代动力学研究显示,相较于单独使用LZDO,半衰期明显延长。特别是单丙酸酯M5表现出最佳的药代动力学特征和适当的理化性质。