Binding specificities of adenosine aminohydrolase from calf intestinal mucosa with dialdehydes derived from hexofuranosyladenine nucleosides
作者:Alan J. Grant、Leon M. Lerner
DOI:10.1021/jm00175a008
日期:1980.1
A series of nucleoside dialdehydes has been prepared as powders after treatment of hexofuranosyladenine nucleosides with paraperiodic acid; thus, periodate oxidation and purification of the products yielded dialdehydes derived from 9-(6-deoxy-beta-D-gulofuranosyl)adenine (1), 9-(6-deoxy-beta-L-gulofuranosyl)adenine (2), 9-(alpha-D-rhamnofuranosyl)adenine (3), 9-(alpha-L-rhamnofuranosyl)adenine (4)
用过高碘酸处理六呋喃糖基腺嘌呤核苷后,制备了一系列核苷二醛粉末。因此,产物的高碘酸盐氧化和纯化产生了衍生自9-(6-脱氧-β-D-古呋喃糖基)腺嘌呤(1),9-(6-脱氧-β-L-古呋喃糖基)腺嘌呤(2),9的二醛。 -(α-D-鼠李糖呋喃糖基)腺嘌呤(3),9-(α-L-鼠李糖呋喃糖基)腺嘌呤(4),9-(6-脱氧-α-L-呋喃呋喃糖基)腺嘌呤(5),9-(5, 6-二脱氧-β-L-ribo-hex-5-enofuranosyl)腺嘌呤(6)和9-(5,6-二脱氧-β-D-ribo-hex-5-enofuranosyl)腺嘌呤(7)。核苷二醛1、4和5是小牛肠粘膜腺苷氨基水解酶的弱底物。二醛6和7不是酶的底物,而是相当强的竞争性抑制剂,Ki值分别为50和7 microM。二醛2和3根本不结合该酶。二醛没有表现出时间依赖性抑制作用,表明它们没有与蛋白质形成共价键。