Synthesis and Antimicrobial Evaluation of Some Novel Pyrido[2,3-<i>d</i>] Pyrimidine Derivatives and Their Ribofuranosides
作者:Sangeeta Bhargava、Lokesh Kumar Rajwanshi
DOI:10.1002/jhet.3203
日期:2018.8
4‐imino‐3,5,7‐trisubstituted pyrido[2,3‐d] pyrimidin‐2(1H)‐ones 3a–c and 4‐imino‐3,5,7‐trisubstituted pyrido[2,3‐d]pyrimidin‐2(1H)‐thiones 4a–c, respectively. The ribofuranosides, namely, 4‐imino‐3,5,7‐trisubstituted‐1‐(2′,3′,5′‐tri‐O‐benzoyl‐β‐d‐ribofuranosyl) pyrido[2,3‐d]pyrimidin‐2(1H)‐ones 7a–c and 4‐imino‐3,5,7‐trisubstituted‐1‐(2′,3′,5′‐tri‐O‐benzoyl‐β‐D‐ribofuranosyl) pyrido[2,3‐d]pyri‐midin‐2(1H)‐thiones
用芳基异氰酸酯和芳基异硫氰酸酯处理的2-氨基3-氰基-4,6-二取代吡啶2a-c提供了4-亚氨基-3,5,7-三取代吡啶[2,3 - d ]嘧啶2(1 H)分别是3a–c和4–亚氨基-3,5,7-三取代吡啶并[2,3 – d ]嘧啶2(1 H)–硫酮4a–c。呋喃核糖核苷,即4-亚氨基-3,5,7-三取代-1-(2',3',5'-三-O-苯甲酰基-β - d-呋喃呋喃糖基)吡啶基[2,3- d ]嘧啶‐2(1 H)‐7a –c和4‐亚氨基‐3,5,7‐三取代‐1‐(2 ',3 ',5 ' -三- ö -benzoyl- β -D-呋喃核糖基)吡啶并[2,3- d ]螨-midin-2(1 ħ)-thiones 8A-C ,由三甲基硅烷衍生物的缩合合成3A- c和4a–c与β - d-呋喃呋喃糖基-1-乙酸酯2,3,5-三苯甲酸酯。通过元素分析,IR,1 H NMR和13 C NMR光谱确定