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Showing 21 - 30 of 10338 results

Stiripentol is an anticonvulsant drug used in the treatment of epilepsy. It recently proved to increase the GABAergic transmission in vitro in an experimental model of immature rat. Clinical studies were based on the fact that STP also acts as an inhibitor of CYP3A4, CYP1A2, and CYP2C19 in vivo in epileptic patients. Side effects are largely due to the increase in plasma concentrations of other anticonvulsants and can be reduced by lowering the dose of those drugs. Nausea and vomiting are particularly noted when used in combination with sodium valproate. It appears to increase the potency of phenobarbital, primidone, phenytoin, carbamazepine, clobazam and diazepam.
Fostamatinib is a pro-drug of a Syk inhibitor R406 initially developed by Rigel Pharmaceuticals, but then in-licensed by AstraZeneca. It reached phase III of clinical trials for such diseases as Rheumatoid Arthritis and Immune Thrombocytopenic Purpura, however, AstraZeneca decided not to proceed with regulatory filings and return the rights to the compound to Rigel Pharmaceuticals. In 2018 the drug was approved by the FDA for treatment of chronic immune thrombocytopenia. Fostamatinib is being developed for Autoimmune Hemolytic Anemia (phase II), graft versus host disease (phase I) and ovarian cancer (phase I).

Class (Stereo):
CHEMICAL (ABSOLUTE)



Pibrentasvir is a direct acting antiviral agent and Hepatitis C virus (HCV) NS5A inhibitor that targets the the viral RNA replication and viron assembly. NS5A is a phosphoprotein that plays an essential role in replication, assembly and maturation of infectious viral proteins. The basal phosphorylated form of NS5A, which is maintained by C-terminal serine cluster, is key in ensuring its interaction with the viral capsid protein, or the core protein. By blocking this interaction, pibrentasvir inhibits the assembly of proteins and production of mature HCV particles. In the United States and Europe, Pibrentasvir is approved for use with glecaprevir as the combination drug glecaprevir/pibrentasvir (trade name Mavyret in the US and Maviret in the EU) for the treatment of hepatitis C. This fixed-dose combination therapy was FDA-approved in August 2017 to treat adults with chronic hepatitis C virus (HCV) genotypes 1-6 without cirrhosis (liver disease) or with mild cirrhosis, including patients with moderate to severe kidney disease and those who are on dialysis.
Brigatinib (AP26113) is an investigational, targeted cancer medicine discovered internally at ARIAD Pharmaceuticals, Inc. Brigatinib has exhibited activity as a potent dual inhibitor of anaplastic lymphoma kinase (ALK) and epidermal growth factor receptor (EGFR). It is in development for the treatment of patients with anaplastic lymphoma kinase positive (ALK+) non-small cell cancer (NSCLC) whose disease is resistant to crizotinib. Brigatinib is currently being evaluated in the global Phase 2 ALTA (ALK in Lung Cancer Trial of AP26113) trial that is anticipated to form the basis for its initial regulatory review. ARIAD has also initiated the Phase 3 ALTA 1L trial to assess the efficacy of brigatinib in comparison to crizotinib. Brigatinib was granted orphan drug designation by the U.S. Food and Drug Administration (FDA) in May 2016 for the treatment of certain subtypes of non-small cell lung cancer (NSCLC). The designation is for anaplastic lymphoma kinase-positive (ALK+), c-ros 1 oncogene positive (ROS1+), or epidermal growth factor receptor positive (EGFR+) non-small cell lung cancer (NSCLC). Brigatinib received breakthrough therapy designation from the FDA in October 2014 for the treatment of patients with ALK+ NSCLC whose disease is resistant to crizotinib. Both designations were based on results from an ongoing Phase 1/2 trial that showed anti-tumor activity of brigatinib in patients with ALK+ NSCLC, including patients with active brain metastases.
Ribociclib, also known as LEE011, is an orally available cyclin-dependent kinase (CDK) inhibitor targeting cyclin D1/CDK4 and cyclin D3/CDK6 cell cycle pathway, with potential antineoplastic activity. CDK4/6 inhibitor LEE011 specifically inhibits CDK4 and 6, thereby inhibiting retinoblastoma (Rb) protein phosphorylation. Inhibition of Rb phosphorylation prevents CDK-mediated G1-S phase transition, thereby arresting the cell cycle in the G1 phase, suppressing DNA synthesis and inhibiting cancer cell growth. Overexpression of CDK4/6, as seen in certain types of cancer, causes cell cycle deregulation. Ribociclib is in phase III clinical trials by Novartis for the treatment of postmenopausal women with advanced breast cancer. Phase II clinical trials are also in development for the treatment of liposarcoma, ovarian cancer, fallopian tube cancer, peritoneum cancer, endometrial cancer, and gastrointestinal cancer. Preregistration for Breast cancer (First-line therapy, Combination therapy, Late-stage disease) in the USA (PO) in November 2016.

Class (Stereo):
CHEMICAL (RACEMIC)



Secnidazole (trade names Flagentyl, Sindose, Solosec) is a nitroimidazole derivative used to in the treatment of amoebiasis and bacterial vaginosis. Secnidazole and other 5-nitroimidazole drugs enter micro-organisms by passive diffusion and undergo activation by reduction of the 5-nitro group. In anaerobic micro-organisms, such as Trichomonas, Giardia and Entamoeba spp., this intracellular reduction occurs via the pyruvate ferredoxin oxidoreductase complex and results in a concentration gradient across the cell membrane which, in tum, enhances transport of the parent drug into the cell. Because the electron affinity of the 5-nitroimidazoles is greater than that of reduced ferredoxin, the drug interrupts the normal electron flow. Aerobic micro-organisms have a more positive redox potential (i.e. are more efficient electron acceptors) than secnidazole and other 5-nitroimidazoles, which explains the selective toxicity of these drugs against anaerobic microorganisms. DNA is the intracellular target of the Secnidazole and other 5-nitroimidazoles. Secnidazole and other 5-nitroimidazoles possess selective activity against many anaerobic Gram-positive and Gram-negative bacteria and protozoa. In general, secnidazole and metronidazole were approximately equipotent in activity against Bacteroides fragilis, Trichomonas vaginalis, and Entamoeba histolytica, in in vitro studies. Secnidazole is rapidly and completely absorbed after oral administration. Plasma drug concentrations are linear over the therapeutic dose range of 0.5 to 2g. The tolerability profile of secnidazole does not differ markedly from other 5-nitroimidazoles. The most commonly reported adverse events in clinical trials involved the gastrointestinal tract (nausea, vomiting, glossitis, anorexia, epigastric pain and a metallic taste) and occurred in 2 to 10% of patients. A headache and dizziness were experienced by about 2% of patients. The drug was equally well tolerated in adults and children, and no adverse event required therapeutic intervention or treatment withdrawal.
Venetoclax (trade name Venclexta, also known as ABT-199) is a selective and orally bioavailable small-molecule inhibitor of BCL-2, an antiapoptotic protein. BCL-2 and its related proteins BCL-XL and MCL-1 bind to and sequester pro-apoptotic signals in the cell, causing a down-regulation of apoptosis. As an oncogene and an important regulator of apoptosis, BCL-2 overexpression therefore results in increased tumor cell survival and resistance to chemotherapy. FDA approved Venetoclax in April 2016 for the treatment of patients with chronic lymphocytic leukemia (CLL) with 17p deletion, as detected by an FDA approved test, who have received at least one prior therapy. Also this drug in phase 3 clinical trial in combination therapy for the treatment patients with refractory myeloma and Acute Myeloid Leukemia. Common side effects include neutropenia, nausea, anemia, diarrhea, upper respiratory tract infection. Major side effects include tumor lysis syndrome and severe neutropenia.

Class (Stereo):
CHEMICAL (ABSOLUTE)



Elbasvir is an inhibitor of the Hepatitis C Virus (HCV) Non-Structural protein 5A (NS5A). Elbasvir was approved by the FDA in January 2016 for the treatment of hepatitis C. It was developed by Merck and completed Phase III trials, used in combination with the NS3/4A protease inhibitor grazoprevir under the trade name Zepatier. Zepatier is indicated for treatment of chronic HCV genotype 1 or 4 infection in adults.
Alectinib is a second generation oral drug that selectively inhibits the activity of anaplastic lymphoma kinase (ALK) tyrosine kinase. It was developed by Chugai Pharmaceutical Co. Japan, which is part of the Hoffmann-La Roche group. Alectinib is specifically used in the treatment of non-small cell lung cancer (NSCLC) expressing the ALK-EML4 (echinoderm microtubule-associated protein-like 4) fusion protein that causes proliferation of NSCLC cells. Inhibition of ALK prevents phosphorylation and subsequent downstream activation of STAT3 and AKT resulting in reduced tumour cell viability. Approved under accelerated approval in 2015, alectinib is indicated for use in patients who have progressed on or were not tolerant of crizotinib, which is associated with the development of resistance. Alectinib is marketed as Alecensa.
Cobimetinib is an orally active, potent and highly selective small molecule inhibiting mitogen-activated protein kinase kinase 1 (MAP2K1 or MEK1), and central components of the RAS/RAF/MEK/ERK signal transduction pathway. It has been approved in Switzerland and the US, in combination with vemurafenib for the treatment of patients with unresectable or metastatic BRAF V600 mutation-positive melanoma. Preclinical studies have demonstrated that Cobimetinib is effective in inhibiting the growth of tumor cells bearing a BRAF mutation, which has been found to be associated with many tumor types. A threonine-tyrosine kinase and a key component of the RAS/RAF/MEK/ERK signalling pathway that is frequently activated in human tumors, MEK1 is required for the transmission of growth-promoting signals from numerous receptor tyrosine kinases. Cobimetinib is used in combination with vemurafenib because the clinical benefit of a BRAF inhibitor is limited by intrinsic and acquired resistance. Reactivation of the MAPK pathway is a major contributor to treatment failure in BRAF-mutant melanomas, approximately ~80% of melanoma tumors becomes BRAF-inhibitor resistant due to reactivation of MAPK signalling. BRAF-inhibitor resistant tumor cells are sensitive to MEK inhibition, therefore cobimetinib and vemurafenib will result in dual inhibition of BRAF and its downstream target, MEK. Cobimetinib specifically binds to and inhibits the catalytic activity of MEK1, resulting in inhibition of extracellular signal-related kinase 2 (ERK2) phosphorylation and activation and decreased tumor cell proliferation. Cobimetinib and vemurafenib target two different kinases in the RAS/RAF/MEK/ERK pathway. Cobimetinib is used for the treatment of patients with unresectable or metastatic melanoma with a BRAF V600E or V600K mutation. Cobimetinib is used in combination with vemurafenib, a BRAF inhibitor. Cobimetinib is marketed under the trade name Cotellic.