Novel inhibitors of prolyl 4-hydroxylase. 3. Inhibition by the substrate analog N-oxaloglycine and its derivatives
作者:C. Jane Cunliffe、Trevor J. Franklin、Neil J. Hales、George B. Hill
DOI:10.1021/jm00092a016
日期:1992.7
N-Oxaloglycine (3) is an alpha-ketoglutarate (1) analogue that is a competitive inhibitor of prolyl 4-hydroxylase (EC 1.14.11.2). A study of the structure-activity relationships of some other oxalo derivatives shows that substitution on the glycine moiety modulates activity stereoselectively and that if the omega-carboxylate is homologated or replaced by either acylsulfonamides or anilide, then activity is sharply reduced. This sensitivity to these changes is contrasted with the relative insensitivity of another putative alpha-ketoglutarate analogue, pyridine-2,5-dicarboxylic acid (2), and the implication is discussed that compounds of both series are unlikely to bind to prolyl hydroxylase in the same way even though both inhibit the enzyme competitively.
Triflic anhydride-mediated synthesis of oxazoles
作者:Armin Thalhammer、Jasmin Mecinović、Christopher J. Schofield
DOI:10.1016/j.tetlet.2008.12.080
日期:2009.3
N-Acyl aminoacid esters undergo triflic anhydride-mediated cyclodehydration to form oxazoles and bisoxazoles in a simple one-pot transformation.
N-酰基氨基酸酯经过三氟甲磺酸酐介导的环脱水,以简单的一锅法转化形成恶唑和双恶唑。
Selective Inhibition of Factor Inhibiting Hypoxia-Inducible Factor
作者:Michael A. McDonough、Luke A. McNeill、Melanie Tilliet、Cyril A. Papamicaël、Qiu-Yun Chen、Biswadip Banerji、Kirsty S. Hewitson、Christopher J. Schofield
DOI:10.1021/ja050841b
日期:2005.6.1
transcription factor, hypoxia inducible factor (HIF), that mediates the hypoxic response in animals. Hydroxylation of HIF both causes its degradation and limits its activity. We describe how the use of structural data coupled to solid-phase synthesis led to the discovery of a selectiveinhibitor of one of the HIF hydroxylases. The inhibitor N-oxalyl-d-phenylalanine was shown to inhibit the HIF asparaginyl
一组四种非血红素铁 (II) 和 2-氧戊二酸依赖性酶催化转录因子、缺氧诱导因子 (HIF) 的翻译后修饰,该转录因子介导动物的缺氧反应。HIF 的羟基化会导致其降解并限制其活性。我们描述了如何使用与固相合成耦合的结构数据导致发现一种 HIF 羟化酶的选择性抑制剂。抑制剂 N-草酰-d-苯丙氨酸显示抑制 HIF 天冬酰胺酰羟化酶 (FIH) 但不抑制 HIF 脯氨酰羟化酶。与 FIH 复合的抑制剂的晶体结构表明它与 2OG 结合,并且很可能与分子氧结合位点结合。该结果将有助于调节缺氧反应,以上调具有生物医学重要性的特定基因,