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| Product Name: | Ibrutinib | | Synonyms: | According to Lu imatinib;PCI-32765;1-[(3R)-3-[4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one;2-Propen-1-one, 1-[(3R)-3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]-1-piperidinyl]-;IBRUTINIB (PCI-32765);PCI32765;(R)-1-(3-(4-Amino-3-(4-phenoxyphenyl)-1H-pyrazolo-[3,4-d]pyrimidin-1-yl)piperidin-1-yl)prop-2-;PCI-32765 (Ibrutinib);IBRUTINIB | | CAS: | 936563-96-1 | | MF: | C25H24N6O2 | | MW: | 440.5 | | EINECS: | 805-642-2 | | Product Categories: | Inhibitor;Inhibitors;Anticancer;API;936563-96-1 | | Mol File: | 936563-96-1.mol |  |
| | Ibrutinib Chemical Properties |
| Melting point | 153-158°C | | Boiling point | 715.0±60.0 °C(Predicted) | | density | 1.34 | | storage temp. | -20°C | | solubility | Soluble in DMSO ( up to at least 25 mg/ml) | | pka | 4.09±0.30(Predicted) | | form | solid | | color | White or off-white | | Stability: | Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20°C for up to 3 months. | | InChIKey | XYFPWWZEPKGCCK-GOSISDBHSA-N | | SMILES | C(N1CCC[C@@H](N2C3C(C(C4=CC=C(OC5=CC=CC=C5)C=C4)=N2)=C(N)N=CN=3)C1)(=O)C=C | | CAS DataBase Reference | 936563-96-1 |
| | Ibrutinib Usage And Synthesis |
| Bruton tyrosine kinase (BTK) inhibitor | Ibrutinib is a kind of Bruton tyrosine kinase (BTK) inhibitor, it could be used for the treatment of chronic lymphocytic leukemia (CLL) and mantle cell lymphoma (MCL). MCL and CLL are belonged to the B-cell non-Hodgkin's lymphoma, which is difficult to cure and easy to recurrent.
Common chemical immunotherapy does not have the targeting, often occurs 3 or 4 adverse reactions. Ibrutinib and B lymphocytes could target with BTK which is necessary for formation, differentiation, and transmission of information, inhibit BTK activity irreversibly, and inhibit tumor cell proliferation and survival effectively. Ibrutinib could be rapidly absorbed after oral administration, during 1~2h reach maximum blood concentration, adverse reactions belong to one or two, therefore, Ibrutinib will become a new choice of treatment of CLL and MCL.
Food and Drug Administration (FDA) of USA has speed up approval of Pharmacyclics Corporation and Johnson & Johnson's Imbruvica (generic name: Ibrutinib) came to market to the cure a kind of rarely aggressive leukemia-mantle cell lymphoma (MCL) in 13th November, 2013.
Ibrutinib is a new kind of oral Bruton tyrosine kinase (BTK) inhibitor, it was awarded by FDA be a breakthrough drugs in February of 2013, and approved the MCL and CLL treatments in 13th November, 2013 and 12th February, 2014 respectively.
It could covalently bound selectively with cysteine residues (Cys-481) in active site of Btk target protein, irreversible inhibit BTK, thereby effectively prevent tumor cells from migrating from B cell to lymphoid tissue where adapt for tumor growth.
Information was collated by Xiaonan editor of Chemicalbook.
| | Research and development process | Ibrutinib was developed by American Celera Genentech (Celera Genomics) that was well known because it was the first one drawn "human genome". Pan Zhengying (now Beijing University Shenzhen Graduate School Distinguished Fellow) as the first author of this research and published the process of Ibrutinib in 2007 (ChemMedChem 2 (1): 58-61). But Celera had transferred the development rights to Pharmacyclics Company of California due to funding and resources.
Although Pharmacyclics Company was in a very difficult stage, only $ 0.64 for the stock, facing delisting and bankruptcy in that time, company's management has managed to raise funds, spent only $ 2 million to down payment, 100 million shares and future sales royalty and milestone payment of royalties more to get Ibrutinib.
In 2011, Johnson & Johnson subsidiary Janssen pay $ 150 million upfront payment in order to get the right to cooperate with Pharmacyclics. Once the new drugs in clinical trials and approved to listing, Pharmacyclics company will get $ 975 million in total revenue, and they will share the sales.When the deal was announced, Pharmacyclics stock is only $ 12. Market value was only several hundred million dollars. However, the stock is already $ 123, $ 9.05 billion value now.
| | Mechanism | Signaling pathway of B cell antigen receptor (BCR) is a key driver of tumor growth and spread. BTK as an indispensable participant for BCR signal peptide, it is very important for formation, differentiation, messaging and survival of B lymphocyte. BTK is an identifiable signal peptide molecules of BCR channel. When the signal peptide molecules across the B lymphocyte surface receptors, required channel is activated for transportation, chemotaxis and adhesion, which provide a convenience to be B-cell malignancies.
Ibrutinib is a small molecule can selectively and covalently bound to a cysteine residue (Cys-481) BTK active site, and irreversibly inhibit BTK activity, thereby inhibiting BCR activated signaling pathway, which could effectively prevent the tumor from B cells to lymphoid tissues where suitable for tumor growth, to reduce B cell proliferation and induce apoptosis of malignant cells, which play a role in the treatment of CLL and MCL. Non-clinical studies have shown that Ibrutinib can inhibit malignant B lymphocyte proliferation and survival.
| | Metabolism and Elimination | Ibrutinib primarily metabolized by the cytochrome P450 (CYP3A and a small part of the CYP2D6) and produce a variety of metabolites after metabolism. The metabolite (PCI-45227) is a kind of dihydrodiol substance which is an activity of inhibiting BTK.Compared with Ibrutinib, PCI-45227 has much stronger inhibition on BTK, which is about 15 times stronger. At steady state, the average rate of metabolism of PCI-45227 is around 1~2.8.
Apparent clearance (CL/F) of Ibrutinibis is approximately 1 000 L/h, the half-life (t1/2) is 4~6 h. Ibrutinib mainly be metabolites in the body, excrete with the feces. To healthy subjects by oral radioactive 14C-labeled Ibrutinib, found that nearly 90% of the radiation were eliminated in 168 h, most (about 80%) of them were excreted with the feces, and nearly 10% were excreted in the urine, about 1 % be prototypes were excreted with the feces.
Elimination of Ibrutinib will not make a difference in age (37 to 84 years) and gender, but systemic exposure of patients with moderate hepatic injury will be 6 times higher than in healthy subjects.
| | Patents | Foreign patents: WO 2008039218 (compound); WO 2013003629 (purposes)
US Patent Number: 7,514,444, 7,718,662, patents is valid: December 2026
Domestic patent: CN101610676A, CN101610676B, CN101805341A, CN101805341B, CN102746305A, CN102887900A
| | Description | Ibrutinib (chemical name 1 [(3R)-3-[4-amino-3-(4-phenoxyphenyl)-1Hpyrazolo [3,4-d]pyrimidin-1-yl]-1-piperidinyl]-2-propen-1-one) is a first-in-class,potent, orally administered covalently-binding inhibitor of BTK. In November 2013, the US FDA approved ibrutinib (also referred to as PCI-32765), for the treatment of patients with mantle cell lymphoma (MCL) who had received at least one prior therapy. Ibrutinib is a potent inhibitor of BTK that binds covalently to Cys-481 in the active site of BTK, resulting in inhibition of kinase activity. Ibrutinib does have significant activity against 19 other kinases, including seven with a cognate cysteine residue. These include BLK, BMX, ITK, TEC, EGFR, ERBB2, and JAK3. | | Originator | Celera/Pharmacyclics (United States) | | Uses | Ibrutinib is a highly selective Bruton’s tyrosine kinase (Btk) irreversible inhibitor. | | Definition | ChEBI: Ibrutinib is a member of the class of acrylamides that is (3R)-3-[4-amino-3-(4-phenoxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]piperidine in which the piperidine nitrogen is replaced by an acryloyl group. A selective and covalent inhibitor of the enzyme Bruton's tyrosine kinase, it is used for treatment of B-cell malignancies. It has a role as an EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor and an antineoplastic agent. It is a pyrazolopyrimidine, an aromatic amine, an aromatic ether, a member of acrylamides, a N-acylpiperidine and a tertiary carboxamide. | | Indications | Ibrutinib is a non-receptor Bruton's tyrosine kinase inhibitor approved for the treatment of relapsed chronic lymphocytic leukemia. | | Brand name | Imbruvica | | Clinical Use | Tyrosine kinase inhibitor:
Treatment of mantle cell lymphoma (MCL) and chronic lymphocytic leukaemia (CLL)
Treatment of Waldenstr?m’s macroglobulinaemia (WM) | | Synthesis | Condensation of commercially available 4-phenoxybenzoyl
chloride (88) with malononitrile followed by acidic quench and
O-methylation with dimethyl sulfate furnished vinyl dinitrile 89
in 84% yield over the three-step sequence. Next, treatment with
hydrazine hydrate in refluxing ethanol secured aminopyrazole 90
and this was followed by treatment with neat formamide at elevated
temperature to furnish pyrimidopyrazole 91 in excellent
conversion. Selective alkylation of the pyrazole nitrogen with commercially-
available (S)-piperidinyl tosylate (92) proceeded in 32%
yield. Finally, liberation of the amide followed by pH adjustment
and amide bond formation with acrolyl chloride furnished ibrutinib
(XI) in 50% over the three-step sequence. 
| | target | Btk | | Drug interactions | Potentially hazardous interactions with other drugs
Anti-arrhythmics: concentration possibly increased
by amiodarone and dronedarone - avoid or reduce
dose of ibrutinib.
Antibacterials: concentration possibly increased
by ciprofloxacin, clarithromycin, erythromycin and
telithromycin - avoid or reduce dose of ibrutinib;
concentration reduced by rifampicin - avoid.
Antidepressants: concentration possibly reduced by
St John’s wort - avoid.
Antiepileptics: concentration possibly reduced by
carbamazepine, fosphenytoin, phenobarbital and
phenytoin - avoid.
Antifungals: concentration possibly increased
by fluconazole, itraconazole, ketoconazole and
voriconazole - avoid or reduce dose of ibrutinib
.
Antipsychotics: avoid with clozapine, increased risk
of agranulocytosis.
Antivirals: concentration possibly increased by
atazanavir, darunavir, fosamprenavir, indinavir,
ritonavir and saquinavir - avoid or reduce dose of
ibrutinib.
Aprepitant: concentration possibly increased - avoid
or reduce dose of ibrutinib.
Calcium channel blockers: concentration possibly
increased by diltiazem or verapamil - avoid or reduce
dose of ibrutinib.
Cobicistat: concentration possibly increased, avoid or
reduce dose of ibrutinib.
Cytotoxics: concentration possibly increased by
crizotinib - avoid or reduce dose of ibrutinib;
concentration possibly increased by imatinib -
reduce dose of ibrutinib.
Grapefruit juice and Seville oranges: avoid. | | Metabolism | Ibrutinib is metabolised primarily by CYP3A4 to
produce a dihydrodiol metabolite with an inhibitory
activity towards BTK approximately 15 times lower
than that of ibrutinib. Involvement of CYP2D6 in the
metabolism of ibrutinib appears to be minimal.
After a single oral administration of radiolabeled
[14C]-ibrutinib in healthy subjects, approximately 90%
of radioactivity was excreted within 168 hours, with the
majority (80%) excreted in the faeces and <10% in the
urine. Unchanged ibrutinib accounted for approximately
1% of the radiolabeled excretion product in faeces and
none in urine. | | storage | +4°C | | Mode of action | Ibrutinib is the second oral agent approved for the treatment of MCL. It works by irreversibly inhibiting Bruton’s tyrosine kinase (Btk) leading to the inhibition of B-cell receptor signaling and resulting in the reduction of malignant B-cell proliferation and induction of cell death. Btk plays an important role in the differentiation, development, proliferation, and survival of B cells via activation of cell-cycle regulators and regulating the expression of pro- and antiapoptotic proteins. Aberrant Btk activity results in a variety of B-cell malignancies including MCL. Ibrutinib inhibits Btk by irreversibly binding to cysteine-481 in the active site thereby inhibiting phosphorylation of tyrosine-223 and affecting downstream B-cell signaling pathways. | | References | 1) Honigberg?et al.?(2010),?The Bruton tyrosine kinase inhibitor PCI-32765 blocks B-cell activation and is efficacious in models of autoimmune disease and B-cell malignancy;?Proc. Natl. Acad. Sci. USA?107?13075 DOI:10.1073/pnas.1004594107
2) Ponader?et al.?(2012),?The Bruton tyrosine kinase Inhibitor PCI-32765 thwarts chronic lymphocytic leukemia cell survival and tissue homing in vitro and in vivo;?Blood?119?1182
DOI:10.1182/blood-2011-10-386417
3) De Rooij?et al.?(2012),?The clinically active BTK inhibitor PCI-32765 targets B-cell receptor- and chemokine-controlled adhesion and migration in chronic lymphocytic leukemia;?Blood?119?2590
DOI:10.1182/blood-2011-11-390989
4) Pavlasoca?et al.?(2016),?Ibrutinib inhibits CD20 upregulation on CLL B cells mediated by the CXCR4/SDF-1 axis;?Blood?128?1609 DOI:10.1182/blood-2016-04-709519
5) Sagiv-Barfi?et al.?(2015),?Therapeutic antitumor immunity by checkpoint blockade is enhanced by ibrutinib, an inhibitor of both BTK and ITK; Proc. Natl. Acad. Sci. USA?112?E966 DOI:10.1073/pnas.1500712112
6) Weber?et al.?(2017),?Bruton's Tyrosine Kinase: An Emerging Key Player in Innate Immunity,?Front. Immunol.?8?1454 DOI:10.3389/fimmu.2017.01454 |
| | Ibrutinib Preparation Products And Raw materials |
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