Rationally Designed High-Affinity 2-Amino-6-halopurine Heat Shock Protein 90 Inhibitors That Exhibit Potent Antitumor Activity
摘要:
Heat shock protein 90 (Hsp90) is a molecular chaperone protein implicated in stabilizing the conformation and maintaining the function of many cell-signaling proteins. Many oncogenic proteins are more dependent on Hsp90 in maintaining their conformation, stability, and maturation than their normal counterparts. Furthermore, recent data show that Hsp90 exists in an activated form in malignant cells but in a latent inactive form in normal tissues, suggesting that inhibitors selective for the activated form could provide a high therapeutic index. Hence, Hsp90 is emerging as an exciting new target for the treatment of cancer. We now report on a novel series of 2-amino-6-halopurine Hsp90 inhibitors exemplified by 2-amino-6-chloro-9-(4-iodo-3,5-dimethylpyridin-2-ylmethyl)purine (30). These highly potent inhibitors (IC50 of 30 = 0.009 mu M in a HER-2 degradation assay) also display excellent antiproliferative activity against various tumor cell lines (IC50 of 30 = 0.03 mu M in MCF7 cells). Moreover, this class of inhibitors shows higher affinity for the activated form of Hsp90 compared to our earlier 8-sulfanylpurine Hsp90 inhibitor series. When administered orally to mice, these compounds exhibited potent tumor growth inhibition (> 80%) in an N87 xenograft model, similar to that observed with 17-allylamino-17-desmethoxygeldanamycin (17-AAG), which is a compound currently in phase I/II clinical trials.
[EN] PYRIMIDINE-DIAMINE DUAL HSP90/TRAP1 INHIBITORS<br/>[FR] INHIBITEURS DOUBLES PYRIMIDINE-DIAMINE DE HSP90/TRAP1
申请人:CALASIA PHARMACEUTICALS INC
公开号:WO2016040807A1
公开(公告)日:2016-03-17
Provided are novel compounds of Formula (I): pharmaceutically acceptable salts thereof, and pharmaceutical composition thereof, which are useful as dual Hsp90/TRAP1 inhibitors. Also provided are pharmaceutical compositions comprising the novel compounds of Formula (I) and their use in treating one or more cancers.
[EN] ONE POT PROCESS FOR PREPARING OMEPRAZOLE AND RELATED COMPOUNDS<br/>[FR] PROCÉDÉ DE PRÉPARATION DANS UN RÉCIPIENT UNIQUE D'OMÉPRAZOLE
申请人:CADILA HEALTHCARE LTD
公开号:WO2010134099A1
公开(公告)日:2010-11-25
The present invention relates to one pot process for preparing 2- [(pyridinyl)methyl]sulfinyl-substituted benzimidazoles of Formula (I') or a pharmaceutically acceptable salt, hydrate, or solvate thereof. More particularly, the present invention relates to the process for preparation of omeprazole by in-situ oxidization of compound of general formula (II')
2-Aminopurine analogs having HSP90-inhibiting activity
申请人:Kasibhatla Rao Srinivas
公开号:US20050113340A1
公开(公告)日:2005-05-26
2-Aminopurine analogs are described and demonstrated or predicted to have utility as Heat Shock Protein 90 (HSP90) inhibiting agents in the treatment and prevention of various HSP90 mediated disorders, e.g., proliferative disorders. Method of synthesis and use of such compounds are also described and claimed.
Pyrrolopyrimidines and related analogs as HSP90-inhibitors
申请人:Kasibhatla R. Srinivas
公开号:US20050107343A1
公开(公告)日:2005-05-19
Pyrrolopyrimidines and related analogs are described and demonstrated to have utility as Heat Shock Protein 90 (HSP90) inhibiting agents used in the treatment and prevention of various HSP90 mediated disorders, e.g., proliferative disorders. Methods of synthesis and use of such compounds are also described and claimed.