259809-78-4Relevant academic research and scientific papers
Design, Synthesis, and Structure-Activity Relationship of Tetrahydropyrido[4,3-d]pyrimidine Derivatives as Potent Smoothened Antagonists with in Vivo Activity
Lu, Wenfeng,Liu, Yongqiang,Ma, Haikuo,Zheng, Jiyue,Tian, Sheng,Sun, Zhijian,Luo, Lusong,Li, Jiajun,Zhang, Hongjian,Yang, Zeng-Jie,Zhang, Xiaohu
, p. 1980 - 1994 (2017/09/25)
Medulloblastoma is one of the most prevalent brain tumors in children. Aberrant hedgehog (Hh) pathway signaling is thought to be involved in the initiation and development of medulloblastoma. Vismodegib, the first FDA-approved cancer therapy based on inhibition of aberrant hedgehog signaling, targets smoothened (Smo), a G-protein coupled receptor (GPCR) central to the Hh pathway. Although vismodegib exhibits promising therapeutic efficacy in tumor treatment, concerns have been raised from its nonlinear pharmacokinetic (PK) profiles at high doses partly due to low aqueous solubility. Many patients experience adverse events such as muscle spasms and weight loss. In addition, drug resistance often arises among tumor cells during treatment with vismodegib. There is clearly an urgent need to explore novel Smo antagonists with improved potency and efficacy. Through a scaffold hopping strategy, we have identified a series of novel tetrahydropyrido[4,3-d]pyrimidine derivatives, which exhibited effective inhibition of Hh signaling. Among them, compound 24 is three times more potent than vismodegib in the NIH3T3-GRE-Luc reporter gene assay. Compound 24 has a lower melting point and much greater solubility compared with vismodegib, resulting in linear PK profiles when dosed orally at 10, 30, and 100 mg/kg in rats. Furthermore, compound 24 showed excellent PK profiles with a 72% oral bioavailability in beagle dogs. Compound 24 demonstrated overall favorable in vitro safety profiles with respect to CYP isoform and hERG inhibition. Finally, compound 24 led to significant regression of subcutaneous tumor generated by primary Ptch1-deficient medulloblastoma cells in SCID mouse. In conclusion, tetrahydropyrido[4,3-d]pyrimidine derivatives represent a novel set of Smo inhibitors that could potentially be utilized to treat medulloblastoma and other Hh pathway related malignancies.
HEDGEHOG PATHWAY SIGNALING INHIBITORS AND THERAPEUTIC APPLICATIONS THEREOF
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, (2014/08/06)
The hedgehog (Hh) signaling pathway is a pathway which regulates patterning, growth and cell migration during embryonic development, but in adulthood is limited to tissue maintenance and repair. Mutational inactivation of the inhibitory pathway components leads to constitutive ligand-independent activation of the Hh signaling pathway, results in cancers such as basal cell carcinoma and medulloblastoma. Ligand-dependent activation of Hh signaling is involved in prostate cancer, pancreatic cancer, breast cancer and blood cancers. Therefore, inhibition of the aberrant Hh signaling represents a promising approach toward novel anticancer therapy. The invention provides novel molecules of formula I that inhibit hedgehog pathway signaling and provides therapeutic applications for the treatment of malignancies (basal cell carcinoma, medulloblastoma, glioblastoma, non-small cell lung cancer, prostate cancer, pancreatic cancer, blood cancers, mesenchymal cancers, etc.), prevention of tumor regrowth, sensitization of radio-chemo therapies, and other diseases (inflammation, fibrosis and immune disorders).
KINASE INHIBITORS
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, (2013/09/26)
The present invention relates to compounds of formulae I and II wherein the variables are as defined herein. These compounds are capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
METHOD OF TREATING CONDITIIONS WITH KINASE INHIBITORS
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, (2013/09/26)
The present invention relates to a method of treating ophthalmic diseases and conditions, e.g. diabetic retinopathy, age-related macular degeneration, retinopathy of prematurity, etc., in a subject comprising administering to said subject a therapeutically effective amount of at least one compound of formula I or a prodrug, pharmaceutically acceptable salt, racemic mixtures or enantiomers of said compound. The compounds of formula I are capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.
Substituted Benzamide Compounds
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, (2012/04/04)
Substituted benzamide compounds corresponding to formula (I) in which R5, R6, R7, R8, a, b, c, d, t, D and X have defined meanings, a process for their preparation, pharmaceutical compositions comprising such compounds, and a method of using such compounds to treat pain and other conditions mediated at least in part via the bradykinin 1 receptor.
METABOTROPIC GLUTAMATE RECEPTOR MODULATORS
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, (2012/07/13)
The invention relates to heterocyclic derivatives as well as their pharmaceutically acceptable salts. The invention further relates to a process for the preparation of such compounds. The compounds of the invention are m GluR5 modulators and are therefore useful for the control and prevention of acute and/or chronic neurological disorders.
