Pyrimidines.<b>XXXIII</b>. Synthesis and properties of new fervenulin derivatives
作者:Susanne Werner-Simon、Wolfgang Pfleiderer
DOI:10.1002/jhet.5570330365
日期:1996.5
A series of new 3-substituted fervenulin (6,8-dimethylpyrimido[5,4-c]-1,2,4-triazine-5,7-dione) (1) derivatives have been synthesized by modifying the 3-alkyl- and aralkyl side-chains. Brominations of 3-methyl-15, 3-ethyl-16- and 3-benzylfervenulin (17) led to mono- and dibromo derivatives 22, 23, 25–27, which are prone to various nucleophilic displacement reactions 24, 28–35. Periodate oxidation and
通过对3-烷基进行修饰,合成了一系列新的3-取代的铁蛋白(6,8-二甲基嘧啶[5,4- c ] -1,2,4-三嗪-5,7-二酮)(1)衍生物。和芳烷基侧链。3-甲基的溴化反应-15,3-乙基-16-和3- benzylfervenulin(17导致单-和二溴衍生物)22,23,25-27,它们易发生各种亲核置换反应24,28-35。3-styrylfervenulin(20)分别进行高碘酸氧化和臭氧分解,得到fervenulin-3-carboxaldehyde(36),将其转变为叶酸类似物(39)。)。3- alkylfervenulins高锰酸钾氧化15-19得到仅环收缩到3-烷基-5,7-二甲基咪唑并[4,5- ë ] -1,2,4-三嗪-6-酮42-46其也在乙醇氢氧化钠处理下,与2,4a-二氢衍生物47-50形成混合物。Fervenulin -3-羧酸(55)可以被转化成相应的