Design, Synthesis and Antiviral Activity of Novel 4,5-Disubstituted 7-(β-<scp>d</scp>-Ribofuranosyl)pyrrolo[2,3-<i>d</i>][1,2,3]triazines and the Novel 3-Amino-5-methyl-1-(β-<scp>d</scp>-ribofuranosyl)- and 3-Amino-5-methyl-1-(2-deoxy-β-<scp>d</scp>-ribofuranosyl)-1,5-dihydro-1,4,5,6,7,8-hexaazaacenaphthylene as Analogues of Triciribine
作者:Michael T. Migawa、John C. Drach、Leroy B. Townsend
DOI:10.1021/jm0402014
日期:2005.6.1
The synthesis of several heterocyclic analogues of the biologically important nucleoside antibiotic toyocamycin and the tricyclic nucleoside triciribine (TCN) were prepared along with their 2'-deoxy counterparts. Coupling of 2-nitropyrrole-3,4-dicarboxamide (15) under a variety of conditions with alpha-chloro-2-deoxy-3,4-di-O-toluoyl-D-ribofuranose (16a) gave mixtures of the alpha and beta anomers. A
制备了生物学上重要的核苷抗生素Toyocamycin和三环核苷Triciribine(TCN)的几种杂环类似物,以及它们的2'-脱氧对应物。在各种条件下,将2-硝基吡咯-3,4-二甲酰胺(15)与α-氯-2-脱氧-3,4-二-O-甲苯酰基-D-呋喃呋喃糖(16a)偶联,得到α和氯的混合物。 β异头物。15与1-氯-2,3,5-三-O-苯甲酰基-D-呋喃呋喃糖的偶合(18)仅产生β端基异构体。分别将两个吡咯核苷用Pd / C,H2处理以还原硝基并用亚硝酸环化,然后将相应的4位官能化为三唑基衍生物。用氨进行亲核置换,得到4-氨基-1-(2,3,5-三-O-苯甲酰基-β-D-核呋喃糖基)吡咯并[2,3-d] [1,2,3] -5-嗪三嗪(26)和2-氨基-1-(2,3,5-三-O-苯甲酰基-β-D-呋喃呋喃糖基)吡咯-3,4 -二腈(27),后者通过逆狄尔斯-阿尔德反应形成。随后将硫化氢,水,甲