Design, Synthesis, and Investigation of Novel Nitric Oxide (NO)-Releasing Prodrugs as Drug Candidates for the Treatment of Ischemic Disorders: Insights into NO-Releasing Prodrug Biotransformation and Hemoglobin–NO Biochemistry
作者:Guoyan G. Xu、Tanvi M. Deshpande、Mohini S. Ghatge、Akul Y. Mehta、Abdel Sattar M. Omar、Mostafa H. Ahmed、Jurgen Venitz、Osheiza Abdulmalik、Yan Zhang、Martin K. Safo
DOI:10.1021/acs.biochem.5b01074
日期:2015.12.15
RSR13 is an allosteric effector of hemoglobin (Hb) that decreases the protein’s affinity for oxygen, thereby increasing tissue oxygenation. NO, because of its vasodilatory property, in the form of ester prodrugs has been found to be useful in managing several cardiovascular diseases by increasing blood flow and oxygenation in ischemic tissues. We synthesized three NO-donor ester derivatives of RSR13 (DD-1
我们已经开发出新的依法洛昔洛酸一氧化氮(NO)释放前药(RSR13),以用于潜在的多种疾病的多种疾病的潜在治疗应用。RSR13是血红蛋白(Hb)的变构效应物,可降低蛋白质对氧的亲和力,从而增加组织的氧合作用。否,由于其血管舒张特性,已发现酯前药的形式可通过增加缺血组织的血流量和氧合来用于治疗多种心血管疾病。我们通过连接释放NO的部分硝基氧乙基,硝基氧丙基和1-(吡咯烷-1-基)二重氮-1-鎓盐合成了RSR13的三种NO供体酯衍生物(DD-1,DD-2和DD-3)。 -1,2-二醇盐分别与RSR13的羧酸盐结合。体外研究表明,与l-半胱氨酸(1.8–9.3%)或人血清(2.3–52.5%)孵育后,这些化合物以时间依赖性方式释放NO,并且还降低了Hb对全血中氧气的亲和力(ΔP 50的4.9-21.7毫米汞柱VSΔ P 50对于RSR13为25.4–32.1 mmHg)。晶体学研究表明,RSR1