This invention is in the area of improved compounds, compositions and methods of transiently protecting healthy cells, and in particular hematopoietic stem and progenitor cells (HSPC) as well as renal cells, from damage associated with DNA damaging chemotherapeutic agents. In one aspect, improved protection of healthy cells is disclosed using disclosed compounds that act as highly selective and short, transiently-acting cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors when administered to subjects undergoing DNA damaging chemotherapeutic regimens for the treatment of proliferative disorders.
本发明涉及瞬时保护健康细胞,特别是造血干细胞和祖细胞(HSPC)以及肾脏细胞免受DNA损伤性化疗药物损害的改良化合物、组合物和方法。在一个方面,所公开的化合物可作为高选择性、短效、瞬时起作用的细胞周期蛋白依赖性激酶4/6(CDK 4/6)
抑制剂,用于接受DNA损伤性化疗方案治疗增殖性疾病的受试者,从而改善对健康细胞的保护。