Exploration of click reaction for the synthesis of modified nucleosides as chitin synthase inhibitors
作者:Preeti M. Chaudhary、Sayalee R. Chavan、Fazal Shirazi、Meenakshi Razdan、Prachi Nimkar、Shailaja P. Maybhate、Anjali P. Likhite、Rajesh Gonnade、Braja G. Hazara、Mukund V. Deshpande、Sunita R. Deshpande
DOI:10.1016/j.bmc.2009.02.019
日期:2009.3
Click reaction approach toward the synthesis of two sets of novel 1,2,3-triazolyl linked uridine derivatives 19a–19g and 21a–21g was achieved by Cu(I)-catalyzed 1,3-dipolar cycloaddition of 5′-azido-5′-deoxy-2′,3′-O-(1-methylethylidene)uridine (17) with propargylated ether of phenols 18a–18g and propargylated esters 20a–20g. Structure of one of the representative compound 19d was unambiguously confirmed
通过Cu(I)催化5'-azido-5的1,3-偶极环加成反应,实现了点击反应方法,用于合成两组新的1,2,3-三唑基连接的尿苷衍生物19a – 19g和21a – 21g。 '-deoxy-2',3'- O-(1-甲基亚乙基)尿苷(17)与酚18a – 18g的炔丙基化醚和炔丙基酯20a – 20g。通过X射线晶体学明确地确认了代表性化合物19d之一的结构。所有这些化合物19a - 19g和进行了21a – 21g的开发,以制定抗真菌策略。通过与尼古霉素比较,将化合物19d,19e,19f和21f鉴定为有效的几丁质合酶抑制剂。化合物19a,19b,19c,19d,21a和21b对人和植物病原体显示出良好的抗真菌活性。化合物19a,19b,19f,21c,21f和21g 通过比较抑制生长,%胚管形成和几丁质合酶活性的结果,鉴定出它们被鉴定为几丁质合酶先导抑制剂,可以进一步修饰。