制备了在C(2)具有甲硫基(13a),氯(13b),甲氧基(9b)和氧代(2、3)取代基的各种2-取代的嘌呤和吡咯并[2,3 - d ]嘧啶2'-脱氧核糖核苷。它们可以通过立体选择性核碱基阴离子糖基化或碱基转化获得。描述了由2'-脱氧鸟苷(15)三步合成未知的2'-脱氧异肌氨酸(2)。化合物2及其7-脱氮嘌呤衍生物3显示强荧光。
Synthesis of potential antifilarial agents 2 . methyl 2-substituted purine 8-carbamates and related compounds
作者:Siya Ram、William Evans、Dean S. Wise、Leroy B. Townsend、John W. Mccall
DOI:10.1002/jhet.5570260427
日期:1989.7
A series of methyl 2-substituted purine 8-carbamates was prepared and evaluated for antifilarial activity. These purines were synthesized as aza congeners of benzimidazole carbamates which have shown significant anthelmintic activity to determine the effect that this modification might have on anthelmintic activity. The compounds were tested against the filarial infection, B. pahangi, in jirds. None
Novel cephalosporin compounds and processes for the preparation thereof
申请人:LUCKY LTD.
公开号:EP0584797A3
公开(公告)日:1994-06-08
The present invention relates to novel cephalosporin compounds, pharmaceutically acceptable non-toxic salts, physiologically hydrolyzable esters, hydrates and solvates and isomers thereof which possess potent and broad antibacterial activities. The compounds of the present invention have a (1,5,6-substituted-4-aminopyrimidinium-2-yl)thiomethyl group in 3-position of the cephem nucleus and is specifically represented by the following formula(I):