New 4-aryl-1,3,2-oxathiazolylium-5-olates: Chemical synthesis and photochemical stability of a novel series of S-nitrosothiols
作者:Monica Eilertsen、Steve M. Allin、Russell J. Pearson
DOI:10.1016/j.bmcl.2018.01.059
日期:2018.4
–SNO moiety into a five membered heterocyclic ring in an attempt to improve the compound’s overall stability. The synthesis of a novel series of halogen-containing OZOs was comprehensively studied resulting in a seven-step route and overall yields ranging between 21 and 37%. The photochemical stability of these compounds was assessed to determine if S-nitrosothiols locked within these mesoionic ring systems
S-亚硝基硫醇(RSNO)仍然是最流行的NO供体化合物之一,因为它们能够在非酶促方式下释放一氧化二氮(NO),同时产生惰性的二硫化物副产物。然而,由于这些化合物在包括热,光和铜离子存在在内的各种条件下固有的不稳定性,将这些化合物归入NO研究的不同生物学领域已被证明是有问题的。1,3,2-氧杂恶唑基-5-油酸酯(OZO)代表S的一个有趣子类-亚硝基硫醇将–SNO部分锁定在五元杂环中,以试图改善化合物的整体稳定性。全面研究了一系列新型的含卤素OZO的合成,得出了七步路线,总收率在21%到37%之间。评估了这些化合物的光化学稳定性,以确定与这些非环状对应物相比,锁定在这些中离子环系统内的S-亚硝基硫醇是否可以提供更高的稳定性,从而以更可控的方式释放NO。