2,4-Diamino-5-benzylpyrimidines and analogs as antibacterial agents. 6. A one-step synthesis of new trimethoprim derivatives and activity analysis by molecular modeling
作者:Alexander Stuart、Thomas Paterson、Barbara Roth、Edward Aig
DOI:10.1021/jm00359a009
日期:1983.5
ines. The use of 1,2,3-trimethoxybenzene in place of a phenol produces 2,4-diamino-5-(2,3,4-trimethoxybenzyl)pyrimidine, a trimethoprim isomer with low antibacterial activity. The use of molecular models of several of the new ortho-substituted derivatives in the active site of dihydrofolate reductase has provided a rational explanation for their activities relative to trimethoprim.
已经开发出一种新的2,4-二氨基-5-(4-羟基苄基)嘧啶的路线,该路线涉及2,4-二氨基-5-(羟甲基)嘧啶与苯酚在酸性介质中的缩合。苯酚及其2,6-二烷基衍生物的使用仅产生5-(4-羟基苄基)嘧啶。然而,2,6-二甲氧基苯酚产生5-(3-羟基-2,4-二甲氧基苄基)-和5-(4-羟基-3,5-二甲氧基苄基)嘧啶的混合物。酚缩合已用于制备一系列烷基取代的5-(4-羟基苄基)-和5-(4-烷氧基苄基)嘧啶。用1,2,3-三甲氧基苯代替苯酚可产生2,4-二氨基-5-(2,3,4-三甲氧基苄基)嘧啶,这是一种抗菌活性低的甲氧苄啶异构体。