Synthesis of annelated analogues of 6-benzyl-1-(ethoxymethyl)-5-isopropyluracil (MKC-442) using 1,3-oxazine-2,4(3H )-diones as key intermediates
作者:Janus S. Larsen、Lene Christensen、Gitte Ludvig、Per T. Jørgensen、Erik B. Pedersen、Claus Nielsen
DOI:10.1039/b005282p
日期:——
trimethylsilyl triflate (TMS-triflate) as the catalyst or alkylated with chloromethyl ethyl ether to give annelated MKC-442 analogues 2,3 which are locked in a conformation close to the one of MKC-442. In spite of this, only moderate activities were found against HIV-1 for the annelated analogues of MKC-442.
3-苯基-2-氧代环戊烷羧酸的缩合5与2-(S-甲硫基)异脲 其次是 水解用HCl得到6,7-二氢-7-苯基环戊[ e ] [1,3]恶嗪-2,4(3H,5H)-二酮(10a)。通过反应,合成了7,8-二氢-8-苯基-6 H-环己[ e ] [1,3]恶嗪-2,4(3 H,5 H)-二酮(10b)2-苯基环己酮(9b)具有N-(氯羰基)异氰酸酯。恶嗪10a,b与氨以获得相应的尿嘧啶衍生物12A,12B这后甲硅烷基化 被烷基化 二乙氧基甲烷 使用 三氟甲磺酸三甲基甲硅烷基酯 (TMS-三氟甲磺酸)作为 催化剂 或用 氯甲基乙基醚得到退火的MKC-442类似物2,3,其被锁定在接近MKC-442之一的构象中。尽管如此,对于MKC-442的退火类似物,仅发现了针对HIV-1的中等活性。