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DRUG APPROVALS BY DR ANTHONY MELVIN CRASTO
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Merck: Good Results in Alzheimer’s Trial
Processing of the amyloid precursor protein
Merck Presents Findings from Phase 1b Study of Investigational BACE Inhibitor, MK-8931, in Patients with Alzheimer’s Disease
Merck, known as MSD outside the United States and Canada, today announced the presentation of results from a Phase Ib study showing a dose-dependent decrease in β amyloid levels in cerebral spinal fluid (CSF) following administration of MK-8931, Merck’s investigational oral β-site amyloid precursor protein cleaving enzyme (BACE1 or β secretase) inhibitor, in patients with mild to moderate Alzheimer’s disease (AD). In the study, β amyloid levels were analyzed as a measure of BACE activity. The data were presented during an oral session at the Alzheimer’s Association International Conference (AAIC) in Boston, July 13-18 (Abstract O1-06-05).
http://www.pharmalive.com/merck-good-results-in-alzheimers-trial
| Beta-site APP-cleaving enzyme 1 | |||
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 PDB rendering based on 1fkn |
Beta-secretase 1 (BACE1) also known as beta-site APP cleaving enzyme 1(beta-site amyloid precursor protein cleaving enzyme 1), memapsin-2(membrane-associated aspartic protease 2), and aspartyl protease 2 (ASP2) is an enzyme that in humans is encoded by the BACE1 gene.
β-Secretase is an aspartic-acid protease important in the formation of myelin sheaths in peripheral nerve cells. The transmembrane protein contains two active site aspartate residues in its extracellular protein domain and may function as a dimer.
Roche may bid for Alexion, gets Erivedge EU approval
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Erivedge , Vismodegib
The molecule also is known as GDC-0449 and RG3616.
read all at
http://pharmatimes.com/Article/13-07-15/Roche_may_bid_for_Alexion_gets_Erivedge_EU_approval.aspx
Vismodegib works by interfering with the membrane protein Smoothened, which provides positive signals to the Hh pathway. At present, there are no FDA-approved drugs targeting Hh signaling, although the pathway is the focus of investigation in a variety of cancers.
Meantime, Roche has obtained conditional European approval for Erivedge (vismodegib) for the treatment of adults with symptomatic metastatic basal cell carcinoma (BCC) or locally advanced BCC inappropriate for surgery or radiotherapy.
The Basel-based group noted that the approval makes Erivedge, a capsule taken once-a-day, the first licensed medicine for patients in the European Union “with this disfiguring and potentially life-threatening form of skin cancer”. Chief medical officer Hal Barron said the green light “is great news for patients with advanced basal cell carcinoma, who previously had no medicines to treat their disease”, adding that Erivedge substantially reduced tumour size in patients in clinical trials.
Under the conditional approval, Roche will provide additional data from an ongoing global safety study. Erivedge was approved by the US Food and Drug Administration in January 2012 following a priority review.
Vismodegib (trade name Erivedge) is a drug for the treatment of basal-cell carcinoma(BCC). The approval of vismodegib on January 30, 2012, represents the first Hedgehog signaling pathway targeting agent to gain U.S. Food and Drug Administration (FDA) approval.[1] The drug is also undergoing clinical trials for metastatic colorectal cancer,small-cell lung cancer, advanced stomach cancer, pancreatic cancer, medulloblastomaand chondrosarcoma as of June 2011.[2] The drug was developed by the biotechnology /pharmaceutical company Genentech, which is headquartered at South San Francisco, California, USA.
Vismodegib is indicated for patients with basal cell carcinoma (BCC), which has metastasized to other parts of the body, relapsed after surgery, or cannot be treated with surgery or radiation.[3]
Hedgehog Activation.
The substance acts as a cyclopamine-competitive antagonist of the smoothened receptor (SMO) which is part of the hedgehog signaling pathway.[2] SMO inhibition causes the transcription factors GLI1 and GLI2 to remain inactive, which prevents the expression of tumor mediating genes within the hedgehog pathway.[4] This pathway is pathogenetically relevant in more than 90% of basal-cell carcinomas.[5]
Ligand-dependent Hedgehog signaling.
- “Vismodegib, First Hedgehog Inhibitor, Approved for BCC Patients”.
- Molecule of the Month. June 2011.
- “FDA approves Erivedge (vismodegib) capsule, the first medicine for adults with advanced basal cell carcinoma”.
- “Vismodegib (GDC-0449) Smoothened Inhibitor – BioOncology”.
- H. Spreitzer (4 July 2011). “Neue Wirkstoffe – Vismodegib”. Österreichische Apothekerzeitung (in German) (14/2011): 10.
Vismodegib is Hedgehog (Hg) path inhibitors. Pka = 3.8 (pyridinium cation); soluble 0.1μg/mL (pH = 7), 0.99mg/mL (pH = 1), logP = 2.7. Vismodegib can be synthesized by the following route:
Cancer is just as deadly as it was 50 years ago. Here’s why that’s about to change.
Why haven’t we cured cancer yet? It seems like almost every day, we hear about another miraculous advance in cancer treatment. Drugs that cause tumors to shrink, gene therapies, and even a possible vaccine. And yet, our loved ones keep dying of cancer.
We spoke to cancer experts to find out why the death rate from cancer hasn’t changed in the past 50 years — and we learned how genetic therapies could transform cancer treatments tomorrow.
Top image: Juan Gaertner/Shutterstock.com
Cannabis-Linked Cell Receptor Might Help Prevent Colon Cancer
The study was published in the Aug. 1 issue of the journal Cancer Research.
A cannabinoid receptor lying on the surface of cells may help suppress colorectal cancer, say U.S. researchers. When the receptor is turned off, tumor growth is switched on. Cannabinoids are compounds related to the tetrahydrocannabinol (THC) found in the cannabis plant.
It’s already known that the receptor, CB1, plays a role in relieving pain and nausea, elevating mood and stimulating appetite by serving as a docking station for the cannabinoid group of signaling molecules. This study suggests that CB1 may offer a new path for cancer prevention or treatment.
In the study of human colorectal tumor specimens, the researchers also found that the drug decitabine can restore CB1 expression.In addition, mice those are prone to developing intestinal tumors and also have functioning CB1 receptors developed fewer and smaller tumors when treated with a drug that mimics a cannabinoid receptor ligand, the researchers found. Ligands are molecules that function by binding to specific receptors.
This therapy may help the cancer research team to found out the caner in early stage.
1. www.washingtonpost.com/wp-dyn/content/article/2008/08/01/AR2008080100937.html
2. www.medicinenet.com/script/main/art.asp?articlekey=91511
3. hightimes.com/news/dan/4542
copy paste link
4. neurotalk.psychcentral.com/thread51199.html
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| (−)-(6aR,10aR)-6,6,9-trimethyl- 3-pentyl-6a,7,8,10a-tetrahydro- 6H-benzo[c]chromen-1-ol |
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Tetrahydrocannabinol (THC), or more precisely its main isomer (−)-trans-Δ9-tetrahydrocannabinol ((6aR,10aR)-delta-9-tetrahydrocannabinol), is the principal psychoactive constituent (or cannabinoid) of the cannabis plant. First isolated in 1964, in its pure form, by Israeli scientists Raphael Mechoulam, Yechiel Gaoni and colleagues at the Hebrew University of Jerusalem, it is a glassy solid when cold, and becomes viscous and sticky if warmed. A pharmaceutical formulation of (−)-trans-Δ9-tetrahydrocannabinol, known by its INN dronabinol, is available by prescription in the U.S. and Canada under the brand name Marinol. An aromatic terpenoid, THC has a very low solubility in water, but good solubility in most organic solvents, specifically lipids and alcohols.
Like most pharmacologically-active secondary metabolites of plants, THC in cannabis is assumed to be involved in self-defense, perhaps against herbivores. THC also possesses high UV-B (280–315 nm) absorption properties, which, it has been speculated, could protect the plant from harmful UV radiation exposure.
Tetrahydrocannabinol with double bond isomers and their stereoisomers is one of only three cannabinoids scheduled by Convention on Psychotropic Substances (the other two are dimethylheptylpyran and parahexyl). Note that cannabis as a plant is scheduled by Single Convention on Narcotic Drugs (Schedule I and IV).
Improve Immunity Through Ayurveda
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Greek Herbs- Fennel (saunf)
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History of Fennel
Ancient Greeks and Indian cultures used fennel for cooking and as part of traditional herbal medicine. The Greeks and Indians traditionally combined fennel with other herbs to make home remedies for the relief of gastrointestinal problems such as acidity and indigestion.
Fennel Composition
The essential oil of fennel contains approximately 5 percent limonene, 50 to 80 percent anethole and 5 percent fenchone. Additionally, the oil contains trace amounts of a-pinene, estragole, b-pinene, safrole, b-myrcene, camphene and p-cymene. The seeds from the fennel plant also contain fiber and complex carbohydrates. Fennel contains nutrients including vitamin B-3, magnesium, molybdenum, copper, phosphorus, iron, calcium, manganese, vitamin C, folate and potassium.
Fennel Uses
As a health supplement, fennel can help to prevent gas, support digestion and function as an expectorant that can help to relieve minor respiratory problems such as mucus. Fennel also contains anti-inflammatory properties when used externally. The leaves from the fennel plant can facilitate the healing of wounds and burns. The root of the fennel plant is diuretic and can help treat urine infections. Fennel also contains a combination of phytonutrients including the flavonoids rutin, quercitin and kaempferol. Fennel also has antioxidant properties and as a dietary fiber, it can help lower your cholesterol levels.
Fennel Supplements
Health supplement manufacturers offer fennel supplements in powdered form. As a supplement, manufacturers recommend taking 1 to 4 g per day of the powdered fennel supplement. The Food and Drug Administration, however, has not established a recommended dose for fennel powder. There are no known side effects of consuming fennel powder supplements, although you should speak with your doctor prior to using fennel powder if you are attempting to treat a specific medical condition.
The bulb, foliage, and seeds of the fennel plant are widely used in many of the culinary traditions of the world. The small flowers of wild fennel (mistakenly known in America as fennel “pollen” ) are the most potent form of fennel, but also the most expensive.Dried fennel seed is an aromatic, anise-flavoured spice, brown or green in colour when fresh, slowly turning a dull grey as the seed ages. For cooking, green seeds are optimal. The leaves are delicately flavoured and similar in shape to those of dill. The bulb is a crisp vegetable that can be sautéed, stewed, braised, grilled, or eaten raw. They are used for garnishes and to add flavor to salads. They are also added to sauces and served with pudding. The leaves used in soups and fish sauce and sometimes eaten raw as salad.
Fennel seeds are sometimes confused with those of anise, which are similar in taste and appearance, though smaller. Fennel is also used as a flavouring in some natural toothpastes. The seeds are used in cookery and sweet desserts.
Many cultures in India, Pakistan, Afghanistan, Iran and the Middle East use fennel seed in their cookery. It is one of the most important spices in Kashmiri Pandit and Gujarati cooking. It is an essential ingredient of the Assamese/Bengali/Oriya spice mixture panch phoron and in Chinese five-spice powders. In many parts of India and Pakistan, roasted fennel seeds are consumed as mukhwas, an after-meal digestive and breath freshener. Fennel leaves are used as leafy green vegetables either by themselves or mixed with other vegetables, cooked to be served and consumed as part of a meal, in some parts of India. In Syria and Lebanon, it is used to make a special kind of egg omelette (along with onions, and flour) called ijjeh.
Many egg, fish, and other dishes employ fresh or dried fennel leaves. Florence fennel is a key ingredient in some Italian and German salads, often tossed with chicory and avocado, or it can be braised and served as a warm side dish. It may be blanched or marinated, or cooked in risotto.
In Spain the stems of the fennel plant are used in the preparation of pickled eggplants, “berenjenas de Almagro”.
Medicinal uses
Fennel (Foeniculum vulgare) essential oil in clear glass vial
Fennel contains anethole, which can explain some of its medical effects: It, or its polymers, act as phytoestrogens.
The essence of fennel can be used as a safe and effective herbal drug for primary dysmenorrhea, but could have lower potency than mefenamic acid at the current study level.
Intestinal tract
Fennel is widely employed as a carminative, both in humans and in veterinary medicine (e.g., dogs), to treat flatulence by encouraging the expulsion of intestinal gas. Anethole is responsible for the carminative action.
Mrs. Eencher Herbal states:
On account of its carminative properties, fennel is chiefly used medicinally with purgatives to allay their side effects, and for this purpose forms one of the ingredients of the well-known compound liquorice powder. Fennel water has properties similar to those of anise and dill water: mixed with sodium bicarbonate and syrup, these waters constitute the domestic ‘gripe water‘ used to correct the flatulence of infants. Volatile oil of fennel has these properties in concentration. Commercial preparations of fennel are widely available as alternative treatment for baby colic. Fennel tea, also employed as a carminative, is made by pouring boiling water on a teaspoonful of bruised fennel seeds.
Fennel can be made into a syrup to treat babies with colic (formerly thought to be due to digestive upset), but long-term ingestion of fennel preparations by babies is a known cause of thelarche.
Eyes
In the Indian subcontinent, fennel seeds are also eaten raw, sometimes with some sweetener, as they are said to improve eyesight. Ancient Romans regarded fennel as the herb of sight.Root extracts were often used in tonics to clear cloudy eyes. Extracts of fennel seed have been shown in animal studies to have a potential use in the treatment of glaucoma.
Blood and urine
Fennel may be an effective diuretic and a potential drug for treatment of hypertension.
Breastmilk
There are historical anecdotes that fennel is a galactagogue,improving the milk supply of a breastfeeding mother. This use, although not supported by direct evidence, is sometimes justified by the fact that fennel is a source of phytoestrogens, which promote growth of breast tissue. However, normal lactation does not involve growth of breast tissue. A single case report of fennel tea ingested by a breastfeeding mother resulted in neurotoxicity for the newborn child.
Other uses
Syrup prepared from fennel juice was formerly given for chronic coughs. It is one of the plants which is said to be disliked by fleas, and powdered fennel has the effect of driving away fleas from kennels and stables.
References
- “Herbs That Work: The Scientific Evidence of Their Healing Powers”; David Armstrong
- “The Encyclopedia of Herbs: A Comprehensive Reference to Herbs of Flavor and Fragrance”; Arthur O. Tucker and Thomas DeBaggio; 2009
- “Pocket Guide to Herbal Remedies”; Lane P. Johnson; 2002
- “Encyclopedia of Natural Medicine”; Michael Murray and Joseph Pizzorno; 1997
seeds
Study links vitamin D deficiency to accelerated bone aging
Robert Ritchie (left) and Hrishikesh Bale used a combination of FTIR spectroscopy and X-ray CT at the Advanced Light Source to find that vitamin D deficiency speeds the aging process of bone and reduces its quality. Photo by Roy Kaltschmidt
A team of scientists led by researchers at Lawrence Berkeley National Laboratory and the Univ. of California, Berkeley, have recently used a combination of Fourier transform infrared spectroscopy and X-ray computed tomography at the Advanced Light Source to find that vitamin D deficiency speeds the aging process of bone and reduces its quality.FULL STORY
DRUG DISCOVERY PRESENTATION BY DR ANTHONY CRASTO
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J and J Submits Leukemia Drug, Ibrutinib for Approval
IBRUTINIB
1-[(3R)-3-[4-amino-3-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]prop-2-en-1-one
New Drug Application Submitted to U.S. FDA for Ibrutinib in the Treatment of Two B-Cell Malignancies
If approved, ibrutinib will address a high unmet need in relapsed/refractory chronic lymphocytic leukemia and relapsed/refractory mantle cell lymphoma
RARITAN, N.J., July 10, 2013
Janssen Research & Development, LLC announced the submission of a New Drug Application for ibrutinib to the U.S. Food and Drug Administration (FDA) for its use in the treatment of previously treated patients with chronic lymphocytic leukemia (CLL)/small lymphocytic lymphoma (SLL), and for its use in the treatment of previously treated patients with mantle cell lymphoma (MCL). The regulatory submission for ibrutinib is supported by data from two pivotal Phase 2 studies, one in relapsed/refractory CLL/SLL (PCYC-1102) and one in relapsed/refractory MCL (PCYC-1104), both of which were published in The New England Journal of Medicine online on June 19, 2013. Ibrutinib is a novel Bruton’s tyrosine kinase (BTK) inhibitor being jointly developed by Janssen and Pharmacyclics, Inc. for the treatment of B-cell malignancies.
If approved, ibrutinib would be the first in a class of oral BTK inhibitors and is one of the first medicines to file for FDA approval via the new Breakthrough Therapy Designation pathway. Ibrutinib will be co-commercialized in the U.S. by Janssen Biotech, Inc. and Pharmacyclics.
“The FDA submission is another important milestone for ibrutinib since we formed our strategic partnership with Pharmacyclics just 18 months ago,” said Peter F. Lebowitz, M.D., Ph.D., Global Oncology Head, Janssen. “Both companies recognize that there is great unmet need among these patient populations, and together in close collaboration with the FDA, as part of its Breakthrough Therapy Designation pathway, we have been able to accelerate the ibrutinib development program for the benefit of patients.”
About Chronic Lymphocytic Leukemia
Chronic Lymphocytic Leukemia (CLL) is a slow-growing blood cancer that starts in the white blood cells (lymphocytes), most commonly from B-cells. CLL is the second most common adult leukemia. Approximately 16,000 patients in the US are diagnosed each year with CLL. The prevalence of CLL is approximately 113,000 in the US. The disease is a chronic disease of the elderly with an average survival of about 5 years. Patients commonly receive multiple lines of treatment over the course of their disease.
In CLL the genetic mutation 17p deletion occurs when the short arm of chromosome 17 is missing. Del 17p is associated with abnormalities of a key tumor suppressor gene, TP53, which results in poor response to chemoimmunotherapy and worse treatment outcomes. It occurs in about 7% of treatment naive CLL patients and is estimated to be approximately 20% to 40% of relapsed or refractory patients harboring the mutation.
About Ibrutinib
Ibrutinib , previously publicly known as PCI-32765, is an experimental drug candidate for the treatment of various types of cancer. It was first synthesized at Celera Genomics as a selective inhibitor of Bruton’s tyrosine kinase (Btk).It was later discovered to have anti-lymphoma properties in vivo by scientists at Pharmacyclics, Inc.Ibrutinib is currently under development by Pharmacyclics, Inc and Johnson & Johnson‘sJanssen Pharmaceutical division for chronic lymphocytic leukemia, mantle cell lymphoma,diffuse large B-cell lymphoma, and multiple myeloma. It also has potential effects against autoimmune arthritis.
Janssen Biotech, Inc. and Pharmacyclics entered a collaboration and license agreement in December 2011 to co-develop and co-commercialize ibrutinib. Ibrutinib was designed to specifically target and selectively inhibit an enzyme called Bruton’s tyrosine kinase (BTK). BTK is a key mediator of at least three critical B-cell pro-survival mechanisms occurring in parallel – regulation of apoptosis, adhesion, and cell migration and homing. Through these multiple signals, BTK regulation helps to direct malignant B-cells to lymphoid tissues, thus allowing access to a micro environment necessary for survival.
The effectiveness of ibrutinib alone or in combination with other treatments is being studied in several B-cell malignancies, including chronic lymphocytic leukemia/small lymphocytic lymphoma, mantle cell lymphoma, diffuse large B-cell lymphoma, follicular lymphoma, Waldenstrom’s macroglobulinemia and multiple myeloma. To date five Phase III trials have been initiated with ibrutinib and a total of 26 trials are currently registered on www.clinicaltrials.gov.
About Pharmacyclics
Pharmacyclics® is a clinical-stage biopharmaceutical company focused on developing and commercializing innovative small-molecule drugs for the treatment of cancer and immune mediated diseases. Our mission and goal is to build a viable biopharmaceutical company that designs, develops and commercializes novel therapies intended to improve quality of life, increase duration of life and resolve serious unmet medical healthcare needs; and to identify promising product candidates based on scientific development and administrational expertise, develop our products in a rapid, cost-efficient manner and pursue commercialization and/or development partners when and where appropriate.
Presently, Pharmacyclics has three product candidates in clinical development and several preclinical molecules in lead optimization. The Company is committed to high standards of ethics, scientific rigor, and operational efficiency as it moves each of these programs to viable commercialization.
The Company is headquartered in Sunnyvale, California and is listed on NASDAQ under the symbol PCYC. To learn more about how Pharmacyclics advances science to improve human healthcare visit at http://www.pharmacyclics.com.
New Drug Approvals 