Structural studies on bioactive compounds. 8. Synthesis, crystal structure and biological properties of a new series of 2,4-diamino-5-aryl-6-ethylpyrimidine dihydrofolate reductase inhibitors with in vivo activity against a methotrexate-resistant tumor cell line
作者:Roger J. Griffin、Michelle A. Meek、Carl H. Schwalbe、Malcolm F. G. Stevens
DOI:10.1021/jm00131a009
日期:1989.11
A series of 2,4-diamino-5-aryl-6-ethylpyrimidines embracing basic substituents in the 5-aryl ring was synthesized and evaluated for inhibitory activity against rat liver dihydrofolate reductase (DHFR). Maximal enzyme inhibition was observed for compounds bearing a benzylamino (19) or N-alkylbenzylamino substituent (29 and 30) in the 4-position of the phenyl ring and a nitro group in the 3-position
合成了一系列在5-芳基环中包含碱性取代基的2,4-二氨基-5-芳基-6-乙基嘧啶,并评估了其对大鼠肝二氢叶酸还原酶(DHFR)的抑制活性。对于在苯环的4位带有苄氨基(19)或N-烷基苄基氨基取代基(29和30)而在3位带有硝基的化合物(相应的3-氨基,3-叠氮基或未取代的类似物,仅被证明是弱活性或无活性的DHFR抑制剂。还筛选了针对甲氨蝶呤耐药性肿瘤,M5076鼠网状肉瘤的体内所选化合物,以及针对DHFR,(3,4-二氯苄基)氨基类似物26的一般平行活性的抗肿瘤活性,该化合物被证明毒性最低,显示出显着的抗肿瘤活性。