2-aminothiazole (1) was discovered as a novel Src family kinase inhibitor template through screening of our internal compound collection. Optimization through successive structure-activity relationship iterations identified analogs 2 (Dasatinib, BMS-354825) and 12m as pan-Src inhibitors with nanomolar to subnanomolar potencies in biochemical and cellular assays. Molecular modeling was used to construct a putative binding model for Lck inhibition by this class of compounds. The framework of key hydrogen-bond interactions proposed by this model was in agreement with the subsequent, published crystal structure of 2 bound to structurally similar Abl kinase. The oral efficacy of this class of inhibitors was demonstrated with 12m in inhibiting the proinflammatory cytokine IL-2 ex vivo in mice (ED50 approximately 5 mg/kg) and in reducing TNF levels in an acute murine model of inflammation (90% inhibition in LPS-induced TNFalpha production when dosed orally at 60 mg/kg, 2 h prior to LPS administration). The oral efficacy of 12m was further demonstrated in a chronic model of adjuvant arthritis in rats with established disease when administered orally at 0.3 and 3 mg/kg twice daily. Dasatinib (2) is currently in clinical trials for the treatment of chronic myelogenous leukemia.

中文翻译：

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2-氨基噻唑作为新型激酶抑制剂模板。结构活性关系研究对发现N-（2-氯-6-甲基苯基）-2-[[[6- [4-（2-羟乙基）-1-哌嗪基）]-2-甲基-4-嘧啶基的发现氨基]]-1,3-噻唑-5-羧酰胺（dasatinib，BMS-354825）作为有效的pan-Src激酶抑制剂。

通过筛选我们的内部化合物集合，发现了2-氨基噻唑（1）作为一种新型Src家族激酶抑制剂模板。通过连续的结构-活性关系迭代进行的优化确定了类似物2（Dasatinib，BMS-354825）和12m是在生化和细胞分析中具有纳摩尔至亚纳摩尔浓度的pan-Src抑制剂。分子模型被用来构建推定的结合模型，以抑制这类化合物对Lck的抑制作用。该模型提出的关键氢键相互作用的框架与随后公布的与结构相似的Abl激酶结合的2的晶体结构一致。此类抑制剂的口服药效为12m，可在小鼠体内体外抑制促炎细胞因子IL-2（ED50约为5 mg / kg），并在急性小鼠炎症模型中降低TNF水平（LPS抑制90％） LPS给药前2小时以60 mg / kg口服给药时，TNF-α诱导的TNFα产生）。当每天两次以0.3和3 mg / kg口服给药时，在已确诊疾病的大鼠的慢性佐剂性关节炎模型中进一步证明了12m的口服功效。达沙替尼（2）目前正在临床试验中，用于治疗慢性粒细胞性白血病。当每天两次以0.3和3 mg / kg口服给药时，在已确诊疾病的大鼠的慢性佐剂性关节炎模型中进一步证明了12m的口服功效。达沙替尼（2）目前正在临床试验中，用于治疗慢性粒细胞性白血病。当每天两次以0.3和3 mg / kg口服给药时，在已确诊疾病的大鼠的慢性佐剂性关节炎模型中进一步证明了12m的口服功效。达沙替尼（2）目前正在临床试验中，用于治疗慢性粒细胞性白血病。