Competitive inhibitors of type B ribose 5-phosphate isomerases: design, synthesis and kinetic evaluation of new d-allose and d-allulose 6-phosphate derivatives
作者:Sandrine Mariano、Annette K. Roos、Sherry L. Mowbray、Laurent Salmon
DOI:10.1016/j.carres.2009.02.024
日期:2009.5
demonstrated to have competitive inhibition. Kinetic evaluation on Rpi activity of both EcRpiB and RpiB from Mycobacterium tuberculosis (MtRpiB) shows that several of the designed 6-carbon high-energy intermediate analogues are new competitive inhibitors of both RpiBs. One of them, 5-phospho-D-ribonate, not only appears as the strongest competitive inhibitor of a Rpi ever reported in the literature, with
这项研究报告了D-阿洛糖6-磷酸(All6P),D-阿洛糖(或D-庚糖)6-磷酸(Allu6P)和7种D-核糖5-磷酸异构酶(Rpi)抑制剂的合成。抑制剂被设计为6碳高能中间体的类似物,该中间体被假定为由Escherichiacoli(EcRpiB)的B型Rpi催化的All6P到Allu6P异构化反应(Allpi活性)。可以通过All6P或Allu6P的氧化裂解轻松获得的5-Phospho-D-ribonate,导致了原始的合成子5-dihydrogenophospho-D-ribono-1,4-lactone,可以通过亲核加成反应从中合成其他抑制剂步。对EcRpiB的Allpi活性的动力学评估表明,这些化合物中的两个,即5-磷酸-D-核糖异羟肟酸和N-(5-磷酸-D-核糖酰基)-甲胺,确实起着新型的EcRpiB抑制剂的作用。进一步,已证明5-磷酸-D-核糖异羟肟酸具有竞争性抑制作用。