Synthesis of substituted dihydrobenzo[<i>f</i>]pyrimido[4,5-<i>b</i>]-quinolines as tetracyclic 5-deaza nonclassical folates
作者:Isaac O. Donkor、Aleem Gangjee、Francis K. Duah
DOI:10.1002/jhet.5570270353
日期:1990.3
1-diamino-5,6-dihydrobenzo[f]pyrimido[4,5-c]quinoline (1) while the cyclocondensation of 2,6-diamino-4-hydroxypyrimidine (11) or 6-amino-2,4-dihydroxypyrimidine (12) with chlorovinyl aldehyde 7 was regiospecific affording the linear regioisomers 9-amino-11-oxo-5,6-dihydrobenzo[f]pyrimido[4,5-c]quinoline (2) and 9,11-dioxo-5,6-dihydrobenzo[f]pyrimido[4,5-c]quinoline (3) respectively. The linear structures
2,4,6-三氨基嘧啶(10)与氯乙烯醛7的环缩合得到直链区域异构体9,1 1-二氨基-5,6-二氢苯并[ f ]嘧啶基[4,5- c ]喹啉(1) 2,6-二氨基-4-羟基嘧啶(11)或6-氨基-2,4-二羟基嘧啶(12)与氯乙烯醛7的结合具有区域专一性,提供了线性区域异构体9-氨基-11-氧代-5,6-二氢苯并[ f ] pyrimido [4,5- c ]喹啉(2)和9,11-dioxo-5,6-dihydrobenzo [ f ] pyrimido [4,5- c ] quinoline(3) 分别。这些化合物的线性结构由1 H nmr和13 C nmr光谱数据确定。