哌嗪杂环包含在大量 FDA 批准的药物和生物探针化合物中。然而,在结构上,这些化合物大多局限于两个环氮原子上的取代,通过碳取代使哌嗪化学多样性的扩展合理化。基于系统化学多样性的概念,开发了一个发散的六步合成,其中手性氨基酸以高非对映选择性转化为顺式或反式5-取代的哌嗪-2-乙酸酯,可以通过色谱法使非对映异构体均匀。从六种市售氨基酸或它们各自的氨基醇(两种对映体)开始,我们获得了一整套 24 种受保护的手性 2,5-二取代哌嗪,作为数克数量的单一立体异构体。这些多样化且用途广泛的哌嗪可在任一氮原子上进行功能化,使其可用作平行库合成的起始材料,以及用作靶向生产更复杂的 C 取代哌嗪化合物的中间体。
[EN] COMBINATIONS AND DOSING REGIMES TO TREAT RB-POSITIVE TUMORS<br/>[FR] COMBINAISONS ET RÉGIMES POSOLOGIQUES POUR TRAITER DES TUMEURS RB-POSITIVES
申请人:G1 THERAPEUTICS INC
公开号:WO2016040858A1
公开(公告)日:2016-03-17
This invention directed to methods for treating select RB-positive cancers and other Rb- positive abnormal cellular proliferative disorders using CDK4/6 inhibitors in specific dosing and combination or alternation regimes. In one aspect, treatments of select RB-positive cancers are disclosed using specific CDK4/6 inhibitors in combination or alternation with another chemotherapeutic, for example, an additional kinase inhibitor, PD-1 inhibitor, or BCL-2 inhibitor, or combination thereof.
Compounds of formula
and pharmaceutically acceptable salts thereof are described, as well as the pharmaceutical compositions containing said compounds and their pharmaceutically acceptable salts, and the use of said compounds and pharmaceutical compositions for the treatment, control or amelioration of proliferative diseases, including cancer, Down syndrome or early onset Alzheimer's disease.
Compounds of formula
and pharmaceutically acceptable salts thereof are described, as well as the pharmaceutical compositions containing said compounds and their pharmaceutically acceptable salts, and the use of said compounds and pharmaceutical compositions for the treatment, control or amelioration of proliferative diseases, including cancer.
Compounds of formulae I, II or III, and pharmaceutically acceptable salts thereof, are useful as CDK inhibitors.
式I、II或III的化合物及其药用盐可用作CDK抑制剂。
[EN] TRANSIENT PROTECTION OF NORMAL CELLS DURING CHEMOTHERAPY<br/>[FR] PROTECTION TRANSITOIRE DE CELLULES NORMALES PENDANT UNE CHIMIOTHÉRAPIE
申请人:G1 THERAPEUTICS INC
公开号:WO2014144326A1
公开(公告)日:2014-09-18
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.