[EN] 2-AMINO-O4-SUBSTITUTED PTERIDINES AND THEIR USE AS INACTIVATORS OF O6-ALKYLGUANINE-DNA ALKYLTRANSFERASE<br/>[FR] PTERIDINES A SUBSTITUTION 2-AMINO-O4-ET LEUR UTILISATION COMME INACTIVEURS DE LA O6-ALKYLGUANINE-ADN ALKYLTRANSFERASE
申请人:US GOV HEALTH & HUMAN SERV
公开号:WO2005068465A1
公开(公告)日:2005-07-28
Disclosed are pteridine derivatives of formula (I): (I), wherein, for example, R1 and R2 are hydrogen, C1-C6 alkyl, carboxyl, formyl, C1-C6 hydroxyalkyl, C1-C6 carboxyalkyl, C1-C6 formyl alkyl, C1-C6 alkoxy, acyloxy, acyloxyalkyl wherein the alkyl is C1-C6, halogen, or hydroxy, or a group of formula II: (II); and R3 is (a) phenyl or (b) a cyclic group having at least one 5 or 6-membered heterocyclic ring, optionally with a carbocyclic or heterocyclic ring fused thereto, wherein each heterocyclic ring has at least one hetero atom chosen from O, N, or S; or (c) a phenyl group or a cyclic group, the cyclic group optionally with a carbocyclic or heterocyclic ring fused thereto, which is substituted with 1 to 5 substituents. Disclosed also are pharmaceutical compositions, a method of enhancing the chemotherapeutic effectiveness of cancer treatment agents, a method of deactivating the O6-alkylguanine-DNA alkyltransferase enzyme, and a method of inhibiting the reaction of O6-alkylguanine-DNA alkyltransferase enzyme with an alkylated DNA.
本发明涉及式(I)的黄嘌呤衍生物:(I),其中,例如,R1和R2是氢、C1-C6烷基、羧基、甲酰基、C1-C6羟基烷基、C1-C6羧基烷基、C1-C6甲酰基烷基、C1-C6烷氧基、酰氧基、酰氧基烷基,其中烷基为C1-C6,卤素或羟基,或式II的基团:(II);以及R3是(a)苯基或(b)至少具有一个5或6元杂环环的环状基团,可选地与碳环或杂环环融合在一起,其中每个杂环环至少有一个从O、N或S中选择的杂原子;或(c)苯基或环状基团,环状基团可选地与碳环或杂环环融合在一起,其被1到5个取代基取代。本发明还涉及制药组合物、增强癌症治疗药物的化疗效果的方法、失活O6-烷基鸟嘌呤-DNA烷基转移酶酶的方法以及抑制O6-烷基鸟嘌呤-DNA烷基转移酶与烷基化DNA反应的方法。