Crystal Structures of PI3Kα Complexed with PI103 and Its Derivatives: New Directions for Inhibitors Design
摘要:
The phosphatidylinositol 3-kinase (PI3K) signaling pathway plays important roles in cell proliferation, growth, and survival. Hyperactivated PI3K is frequently found in a wide variety of human cancers, validating it as a promising target for cancer therapy. We determined the crystal structure of the human PI3K alpha-PI103 complex to unravel molecular interactions. Based on the structure, substitution at the R-1 position of the phenol portion of PI103 was demonstrated to improve binding affinity via forming a new H-bond with Lys802 at the bottom of the ATP catalytic site. Interestingly, the crystal structure of the PI3K alpha-9d complex revealed that the flexibility of Lys802 can also induce additional space at the catalytic site for further modification. Thus, these crystal structures provide a molecular basis for the strong and specific interactions and demonstrate the important role of Lys802 in the design of novel PI3K alpha inhibitors.
The present invention encompasses compounds of general formula (I)
wherein the groups R
1
to R
4
, A
1
and A
2
have the meanings given in the claims and in the specification. The compounds of the invention are suitable for the treatment of diseases characterized by excessive or abnormal cell proliferation pharmaceutical preparations containing such compounds and their uses as a medicament.
[EN] INDOLINONE ANALOGUES AS BRD4 INHIBITORS<br/>[FR] ANALOGUES D'INDOLINE EN TANT QU'INHIBITEURS DE BRD4
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2014154760A1
公开(公告)日:2014-10-02
The present invention encompasses compounds of general formula (I) wherein the groups R1 to R4, A1 and A2 have the meanings given in the claims and in the specification. The compounds of the invention are suitable for the treatment of diseases characterized by excessive or abnormal cell proliferation pharmaceutical preparations containing such compounds and their uses as a medicament.
The present invention provides novel compounds that are antagonists of PI3 kinase, PI3 kinase and tryosine kinase, PI3Kinase and mTOR, or PI3Kinase, mTOR and tryosine kinase.
Discovery of Imidazo[1,2-<i>b</i>]thiazole Derivatives as Novel SIRT1 Activators
作者:Chi B. Vu、Jean E. Bemis、Jeremy S. Disch、Pui Yee Ng、Joseph J. Nunes、Jill C. Milne、David P. Carney、Amy V. Lynch、Jesse J. Smith、Siva Lavu、Philip D. Lambert、David J. Gagne、Michael R. Jirousek、Simon Schenk、Jerrold M. Olefsky、Robert B. Perni
DOI:10.1021/jm8012954
日期:2009.3.12
series of imidazo[1,2-b]thiazole derivatives is shown to activate the NAD+-dependent deacetylase SIRT1, a potential new therapeutic target to treat various metabolic disorders. This series of compounds was derived from a high throughput screening hit bearing an oxazolopyridine core. Water-solubilizing groups could be installed conveniently at either the C-2 or C-3 position of the imidazo[1,2-b]thiazole
已显示一系列咪唑并[1,2- b ]噻唑衍生物可激活NAD +依赖性脱乙酰基酶SIRT1,这是治疗各种代谢疾病的潜在新治疗靶标。该系列化合物是从带有恶唑烷吡啶核的高通量筛选命中获得的。水溶性基团可方便地安装在咪唑并[1,2- b ]噻唑环的C-2或C-3位置。可以通过修饰这些咪唑并[1,2- b ]噻唑衍生物的酰胺部分来调节SIRT1酶的活性。该系列中最有效的类似物,即化合物29,已在ob / ob小鼠模型,饮食诱发的肥胖(DIO)小鼠模型和Zucker fa / fa大鼠模型中证明了口服降糖活性。
[EN] 2-ARYLNAPHTHYRIDIN-4-ONES AS POTENT ANTITUMOR AGENTS TARGETING TUMORIGENIC CELL LINES<br/>[FR] 2-ARYLNAPHTYRIDIN-4-ONES EN TANT QU'AGENTS ANTITUMORAUX PUISSANTS CIBLANT DES LIGNÉES CELLULAIRES TUMORIGÈNES
申请人:KUO SHENG-CHU
公开号:WO2014179401A1
公开(公告)日:2014-11-06
In order to search for new antitumor drug candidates from 2-arylnaphthyridin-4-ones (ANs), we have designed and synthesized a series of 3 '-hydroxy or 6-hydroxy derivatives of ANs. Following the antitumor activity screening, most of these compounds were found to exhibit significant activity. Among them, 2-(3-hydroxyphenyl)-5-methyl-1,8-naphthyridin-4(1H)-one (67) was the most promising. In a preliminary action mechanism study, the treatment of Hep3B hepatoma cells with compound (67) reveals that its mechanism of action is affect on microtubule and metastasis-related proteins. Then, the corresponding phosphate prodrug (86) of compound (67) was tested against Hep3B xenograft nude mice model for antitumor activity.