Heterocyclic studies. Part XIV. Novel tri- and tetra-cyclic compounds derived from a pteridine derivative by nucleophilic addition reactions
作者:Jim Clark、F. S. Yates
DOI:10.1039/j39710000371
日期:——
separately across the 5,6- and 7,8-bonds of the pteridine. Thus, ethylene glycol gave a 1,4-dioxinopteridine or a bis-(2-hydroxyethoxy)-adduct according to conditions. Ethane-1,2-dithiol, 1,2-diaminoethane and o-phenylenediamine gave 1,4-dithiino-, pyrazino-, and quinoxalino-pteridines respectively. 2-Thioethanol probably gave a 1,4-thioxino[2,3-g]pteridine rather than its [3,2-g] isomer. 2-Aminoethanol
在蝶啶-4-羧酸乙酯的5,6-和7,8-键之间添加了包含两个官能团的亲核试剂。在某些情况下,仅涉及一个附加分子,并且产物包含具有三个或四个环的新的杂环系统。在其他情况下,齿顶的两个分子分别跨蝶啶的5,6-和7,8键添加。因此,乙二醇根据条件得到1,4-二氧新蝶啶或双-(2-羟基乙氧基)-加合物。乙烷-1,2-二硫醇,1,2-二氨基乙烷和邻苯二胺分别生成1,4-二硫基-,吡嗪基-和喹喔啉-哌啶。2-硫代乙醇可能生成了1,4-硫代己二并[2,3- g ]蝶啶,而不是其[3,2- g ]异构体。2-氨基乙醇得到双-(2-羟乙基氨基)-加合物。