Synthesis and Antiviral Evaluation of Certain Novel Pyrazinoic Acid <i>C</i>-Nucleosides
作者:John A. Walker、Weimin Liu、Dean S. Wise、John C. Drach、Leroy B. Townsend
DOI:10.1021/jm970532z
日期:1998.4.1
literature. As part of our ongoing investigation into the synthesis and reactivity of these compounds, we have developed an electrophilic esterification of a lithiated pyrazine C-nucleoside (1) to give, following deprotection, the versatile intermediate ethyl 3,5-dichloro-6-(beta-d-ribofuranosyl)pyrazine-2-carboxylate (4). This intermediate was subjected to a variety of reaction conditions to generate
吡嗪(1,4-二嗪)C-核苷构成一类罕见的核酸类似物,最近才在文献中进行报道。作为我们对这些化合物的合成和反应性正在进行的研究的一部分,我们开发了一种锂化吡嗪C-核苷(1)的亲电子酯化反应,以使其脱保护后得到通用的中间体3,5-二氯-6-(( β-d-呋喃呋喃糖基)吡嗪-2-羧酸盐(4)。对该中间体进行各种反应条件以产生一系列吡嗪酸C-核苷。评估了这些化合物以及3,5-二氯-2-(β-d-呋喃核糖基)吡嗪(2)和4的抗病毒活性和细胞毒性。化合物2和5-9没有观察到明显的活性,