申请人:Chroma Therapeutics Ltd.
公开号:US08211900B2
公开(公告)日:2012-07-03
Compounds of formula (I) or (II) are dihydrofolate reductase inhibitors, useful for the treatment of, for example, cell proliferative diseases:
wherein A and D are independently —CHR7— or —NR7—; E and G are independently ═CR7— or ═N—; each R6 independently represents hydrogen or —OR7; R7 is hydrogen or C1-C6 alkyl; R1 is a carboxylic acid group (—COOH), or an ester group which is hydrolysable by one or more intracellular carboxylesterase enzymes to a carboxylic acid group; R2 is the side chain of a natural or non-natural alpha amino acid which does not contain a carboxyl, or carboxyl ester group; Y is a bond, —C(═O)—, —S(═O)2—, —C(═O)NR3—, —C(═S)—NR3, —C(═NH)NR3 or —S(═O)2NR3— wherein R3 is hydrogen or optionally substituted C1-C6 alkyl; L1 is a divalent radical of formula -(Alk1)m(Q)n(Alk2)p- wherein m, n and p are independently 0 or 1, and Q, Alk1 and Alk2 are as defined in the claims; X1 represents a bond; —C(═O); or —S(═O)2—; —NR4C(═O)—, —C(═O)NR4—, —NR4C(═O)NR5—, —NR4S(═O)2—, or —S(═O)2NR4— wherein R4 and R5 are independently hydrogen or optionally substituted C1-C6 alkyl; and z is 0 or 1.
式(I)或(II)的化合物是二氢叶酸还原酶抑制剂,可用于治疗细胞增殖性疾病,其中A和D独立地为-CHR7-或-NR7-; E和G独立地为═CR7-或═N-; 每个R6独立地表示氢或-OR7; R7为氢或C1-C6烷基; R1为羧酸基(—COOH)或可由一个或多个细胞内羧酸酯酶水解为羧酸基的酯基; R2为天然或非天然α氨基酸的侧链,不含羧基或羧酯基; Y为键,-C(═O)-,-S(═O)2-,-C(═O)NR3-,-C(═S)-NR3,-C(═NH)NR3或-S(═O)2NR3-,其中R3为氢或可选取代的C1-C6烷基; L1为式-(Alk1)m(Q)n(Alk2)p-的二价基团,其中m、n和p独立地为0或1,Q、Alk1和Alk2如权利要求所定义; X1表示键,-C(═O); 或-S(═O)2-; -NR4C(═O)-,-C(═O)NR4-,-NR4C(═O)NR5-,-NR4S(═O)2-或-S(═O)2NR4-,其中R4和R5独立地为氢或可选取代的C1-C6烷基; z为0或1。