molecular formula C13H18O2 B1674241 Ibuprofeno CAS No. 15687-27-1

Ibuprofeno

Número de catálogo: B1674241
Número CAS: 15687-27-1
Peso molecular: 206.28 g/mol
Clave InChI: HEFNNWSXXWATRW-UHFFFAOYSA-N
Atención: Solo para uso de investigación. No para uso humano o veterinario.
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Descripción

El Ibuprofeno, químicamente conocido como ácido 2-(4-isobutilfenil)propanoico, es un fármaco antiinflamatorio no esteroideo (AINE) ampliamente utilizado. Se emplea principalmente para aliviar el dolor, reducir la fiebre y aliviar la inflamación. Descubierto en 1961 por Stewart Adams y John Nicholson, el this compound se comercializó inicialmente bajo la marca Brufen. Hoy en día, está disponible bajo diversas marcas comerciales, incluyendo Advil, Motrin y Nurofen .

Mecanismo De Acción

El ibuprofeno ejerce sus efectos inhibiendo la enzima ciclooxigenasa (COX), que participa en la síntesis de prostaglandinas. Las prostaglandinas son compuestos lipídicos que median la inflamación, el dolor y la fiebre. Al inhibir la COX, el this compound reduce la producción de prostaglandinas, aliviando así estos síntomas. El this compound es un inhibidor no selectivo de la COX, que afecta a las enzimas COX-1 y COX-2 .

Compuestos Similares:

  • Ácido acetilsalicílico (aspirina)
  • Naproxeno (ácido 2-(6-metoxinaftalen-2-il)propanoico)
  • Diclofenac (ácido 2-(2,6-dicloroanilino)fenilacético)
  • Ketoprofeno (ácido 2-(3-benzoilfenil)propanoico)

Comparación:

  • Aspirina: Al igual que el this compound, la aspirina es un inhibidor no selectivo de la COX, pero tiene un mayor riesgo de efectos secundarios gastrointestinales.
  • Naproxeno: Similar al this compound en sus efectos antiinflamatorios, pero tiene una vida media más larga, lo que permite una dosificación menos frecuente.
  • Diclofenac: Más potente que el this compound, pero asociado con mayores riesgos cardiovasculares.
  • Ketoprofeno: Similar en acción al this compound, pero puede causar más molestias gastrointestinales .

El this compound destaca por su equilibrado perfil de eficacia y seguridad, convirtiéndolo en uno de los AINE más utilizados en todo el mundo.

Aplicaciones Científicas De Investigación

El ibuprofeno tiene una amplia gama de aplicaciones en la investigación científica:

Análisis Bioquímico

Biochemical Properties

Ibuprofen acts primarily by inhibiting the activity of cyclooxygenase (COX) enzymes, which are involved in the synthesis of prostaglandins, thromboxanes, and prostacyclin . These biomolecules play key roles in inflammation, pain, and fever. By inhibiting COX enzymes, ibuprofen reduces the production of these compounds, thereby alleviating the associated symptoms .

Cellular Effects

Ibuprofen’s effects on cells are largely due to its inhibition of prostaglandin synthesis. Prostaglandins are involved in a variety of cellular processes, including inflammation, pain sensation, and regulation of body temperature . By reducing prostaglandin production, ibuprofen can influence these cellular functions. For example, it can decrease inflammation by reducing the production of inflammatory prostaglandins .

Molecular Mechanism

Ibuprofen exerts its effects at the molecular level primarily through its interaction with COX enzymes. It is a non-selective inhibitor of both COX-1 and COX-2 isoforms . Ibuprofen binds to the active site of these enzymes, preventing them from converting arachidonic acid into prostaglandins .

Temporal Effects in Laboratory Settings

The effects of ibuprofen can change over time in laboratory settings. For example, prolonged exposure to ibuprofen can lead to the upregulation of COX-2 in certain cell types, potentially reducing the drug’s efficacy . Additionally, ibuprofen has been shown to have a relatively short half-life in the body, which can influence its long-term effects .

Dosage Effects in Animal Models

The effects of ibuprofen in animal models can vary depending on the dosage. At lower doses, ibuprofen primarily acts as an analgesic and antipyretic. At higher doses, it can also exhibit anti-inflammatory effects . High doses of ibuprofen can also lead to gastrointestinal side effects in some animals .

Metabolic Pathways

Ibuprofen is metabolized primarily in the liver, where it undergoes oxidation and conjugation reactions to form various metabolites . These metabolites are then excreted in the urine . The enzymes involved in ibuprofen metabolism include several cytochrome P450 isoforms and uridine diphosphate glucuronosyltransferases .

Transport and Distribution

After oral administration, ibuprofen is rapidly absorbed and widely distributed throughout the body . It can cross the blood-brain barrier and placenta, and it is also found in breast milk . Ibuprofen is bound to plasma proteins, which can influence its distribution within the body .

Subcellular Localization

As a small, lipophilic molecule, ibuprofen can diffuse across cell membranes and distribute throughout the cell . Its primary site of action is the COX enzymes, which are located in the endoplasmic reticulum and nuclear envelope .

Métodos De Preparación

Rutas Sintéticas y Condiciones de Reacción: La síntesis del ibuprofeno implica varios pasos, comenzando con el isobutilbenceno. Un método tradicional incluye los siguientes pasos:

Métodos de Producción Industrial: En entornos industriales, el this compound se sintetiza a menudo utilizando un proceso más eficiente y ecológico conocido como el proceso BHC (Boots-Hoechst-Celanese). Este método reduce la síntesis a tres pasos principales:

Tipos de Reacciones:

Reactivos y Condiciones Comunes:

Productos Principales:

Comparación Con Compuestos Similares

  • Aspirin (acetylsalicylic acid)
  • Naproxen (2-(6-methoxynaphthalen-2-yl)propanoic acid)
  • Diclofenac (2-(2,6-dichloranilino)phenylacetic acid)
  • Ketoprofen (2-(3-benzoylphenyl)propanoic acid)

Comparison:

Ibuprofen stands out due to its balanced efficacy and safety profile, making it one of the most commonly used NSAIDs worldwide.

Propiedades

IUPAC Name

2-[4-(2-methylpropyl)phenyl]propanoic acid
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InChI

InChI=1S/C13H18O2/c1-9(2)8-11-4-6-12(7-5-11)10(3)13(14)15/h4-7,9-10H,8H2,1-3H3,(H,14,15)
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InChI Key

HEFNNWSXXWATRW-UHFFFAOYSA-N
Source PubChem
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Canonical SMILES

CC(C)CC1=CC=C(C=C1)C(C)C(=O)O
Source PubChem
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Molecular Formula

C13H18O2
Record name ibuprofen
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Related CAS

31121-93-4 (hydrochloride salt), 79261-49-7 (potassium salt)
Record name Ibuprofen [USAN:USP:INN:BAN:JAN]
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DSSTOX Substance ID

DTXSID5020732
Record name Ibuprofen
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Molecular Weight

206.28 g/mol
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Physical Description

Solid
Record name Ibuprofen
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Solubility

Readily sol in most org solvents, VERY SOLUBLE IN ALCOHOL, In water, 21 mg/l @ 25 °C, 0.021 mg/mL at 25 °C
Record name Ibuprofen
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Vapor Pressure

4.74X10-5 mm Hg @ 25 °C
Record name IBUPROFEN
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Mechanism of Action

The exact mechanism of action of ibuprofen is unknown. However, ibuprofen is considered an NSAID and thus it is a non-selective inhibitor of cyclooxygenase, which is an enzyme involved in prostaglandin (mediators of pain and fever) and thromboxane (stimulators of blood clotting) synthesis via the arachidonic acid pathway. Ibuprofen is a non-selective COX inhibitor and hence, it inhibits the activity of both COX-1 and COX-2. The inhibition of COX-2 activity decreases the synthesis of prostaglandins involved in mediating inflammation, pain, fever, and swelling while the inhibition of COX-1 is thought to cause some of the side effects of ibuprofen including GI ulceration., IBUPROFEN AT 25 MG/KG IV INCREASED THE PRIMARY AND TOTAL HEMOSTATIC PLUG FORMATION TIME IN RABBIT EAR CHAMBERS WITH LASER-INDUCED INJURY. THE SAME DOSE INCREASED THE NUMBER OF CUMULATIVE EMBOLI OVER A 10 MINUTE PERIOD AFTER A LASER INJURY TO ARTERIOLES. IN DOGS, DOSES OF 10, 25, AND 50 MG/KG DID NOT ENHANCE THE RELEASE OF (125)I-LABELED FIBRIN DEGRADATION PRODUCTS FROM THE THROMBI AFTER INCUBATION IN PLASMIN, BUT THE LARGEST DOSE SIGNIFICANTLY DECREASED THE THROMBUS WEIGHT 90 AND 180 MINUTES AFTER DRUG ADMINISTRATION. THUS, IBUPROFEN HAD AN INHIBITORY EFFECT ON PLATELET FUNCTION IN VIVO AND IN LARGE DOSES DIMINISHED THE THROMBUS WEIGHT., L-Arginine (L-arg) exhibits multiple biological properties and plays an important role in the regulation of different functions in pathological conditions. Many of these effects could be achieved on this amino acid serving as a substrate for the enzyme nitric oxide synthase (NOS). At the gastrointestinal level, recent reports revealed its protective activities involving a hyperemic response increasing the gastric blood flow. The aim of this study was to characterize the relationship between NOS activity/expression and prostaglandin changes (PGs) in rats gastric mucosa, with L-arg associated resistance to the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen (IBP). The protective effect of oral L-arg (100 mg/kg body wt), administerred together with IBP (100 mg/kg body wt, per os), was evident enough 90 min after drug administration, although a significant protection persisted for more than 6 hr. Pretreatment with N(G)-nitro-L-arginine (L-NNA) (40 mg/kg body wt, intraperitoneally), a competitive inhibitor of constitutive NOS, partly altered the protection afforded by the amino acid. In contrast, no changes could be observed after inducible NOS inhibition [aminoguanidine (AG) 50 mg/Kg body wt, intraperitoneally). L-arg, plus IBP, produced a significant increase of the cyclic GMP (cGMP) response in tissue samples from rat stomach, 90 min and 6 h after drug administration. iNOS activity and mRNA expression were higher in IBP-treated rats, and no differences were observed in inducible responses in the L-arg plus IBP group. No variations in the cNOS activity and expression were found among the different groups of animals assayed. The measurement of mucosal PGE2 content confirmed that biosynthesis of the eicosanoid is maintained by L-arg for over 90 min after IBP, while a total inhibition was observed 6 hr later. The mechanisms of the L-arg protective effect on the damaged induced by IBP could be explained by the different period after drug administration. The early phase is mediated by cyclooxygenase/prostaglandins pathway (COX/PGs) although NO liberated by cNOS and the guanylate cyclase/cGMP pathway could be also relevant. The later phase implicates inhibition of the iNOS/NO response., We previously showed the non-steroidal anti-inflammatory drug (NSAID) ibuprofen suppresses inflammation and amyloid in the APPsw (Tg2576) Tg2576 transgenic mouse. The mechanism for these effects and the impact on behavior are unknown. We now show ibuprofen's effects were not mediated by alterations in amyloid precursor protein (APP) expression or oxidative damage (carbonyls). Six months ibuprofen treatment in Tg+ females caused a decrease in open field behavior (p < 0.05), restoring values similar to Tg- mice. Reduced caspase activation per plaque provided further evidence for a neuroprotective action of ibuprofen.The impact of a shorter 3 month duration ibuprofen trial, beginning at a later age (from 14 to 17 months), was also investigated. Repeated measures ANOVA of Abeta levels (soluble and insoluble) demonstrated a significant ibuprofen treatment effect (p < 0.05). Post-hoc analysis showed that ibuprofen-dependent reductions of both soluble Abeta and Abeta42 were most marked in entorhinal cortex (p < 0.05). Although interleukin-1beta and insoluble Abeta were more effectively reduced with longer treatment, the magnitude of the effect on soluble Abeta was not dependent on treatment duration., Trying to decrease the production of Amyloid beta (Abeta) has been envisaged as a promising approach to prevent neurodegeneration in Alzheimer's disease (AD). A chronic inflammatory reaction with activated microglia cells and astrocytes is a constant feature of AD. The participation of the immune system in the disease process is further documented in several retrospective clinical studies showing an inverse relationship between the prevalence of AD and nonsteroidal anti-inflammatory drug (NSAID) therapy. Previously, we demonstrated that the combination of the proinflammatory cytokines TNFalpha with IFNgamma induces the production of Abeta-42 and Abeta-40 in human neuronal cells. In the present study, the neuronal cell line Sk-n-sh was incubated for 12 h with the cyclooxygenase inhibitor ibuprofen and subsequently stimulated with the cytokines TNFalpha and IFNgamma. Ibuprofen treatment decreased the secretion of total Abeta in the conditioned media of cytokine stimulated cells by 50% and prevented the accumulation of Abeta-42 and Abeta-40 in detergent soluble cell extracts. Viability of neuronal cells measured by detection of apoptosis was neither influenced by ibuprofen nor by cytokine treatment. The reduction in the production of Abeta by ibuprofen was presumably due to a decreased production of betaAPP, which in contrast to the control proteins M2 pyruvate kinase, beta-tubulin and the cytokine inducible ICAM-1 was detected at low concentration in ibuprofen treated cells. The data demonstrate a possible mechanism how ibuprofen may decrease the risk and delay the onset of AD.
Record name Ibuprofen
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Color/Form

Colorless, crystalline stable solid

CAS No.

15687-27-1
Record name Ibuprofen
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Melting Point

75-77.5 ºC, 75-77 °C, 76 °C
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Synthesis routes and methods I

Procedure details

Surprisingly, only a few methods for a stereospecific chemical synthesis for 2-aryl-alkanoic acids, especially 2-aryl-propionic acids, are known. Piccolo et al. (J. Org. Chem. 50, 3945-3946, 1985) describe a stereospecific synthesis by the alkylation of benzene or isobutylbenzene with (S)-methyl-2-(chlorosulfonyl)-oxy or 2-(mesyloxy) propionate in the presence of aluminum chloride yielding (S)-methyl-2-phenyl-propionate in good chemical yield (50-80%) and excellent optical yield of >97% as determined by rotation through inversion of configuration at the attacking carbon atoms. The reaction conditions are very similar as described in some patents (Jpn. Kokai Tokkyo Koho 5808045; Chem. Abstracts, 1983, 98; 143138 k; Jpn. Kokai Tokkyo Koho 7979246; Chem. Abstracts, 1980, 92, 6253 f) where racemic reagents have been used. Extensions of this type of reactions to other aromatic substrates, e.g. toluene, isobutylbenzene, tetraline, anisole, naphthalene, 2-methoxy-naphthalene are described in Jpn. Kokai Tokkyo Koho 7971932; Chem. Abstracts 1979, 91, 20125 b; Jpn. Kokai Tokkyo Koho 78128327; Chem. Abstracts 1978, 89, 23975 y; Jpn. Kokai Tokkyo Koho 81145241; Chem. Abstracts 1982, 96, 68650 z; Jpn. Kokai Tokkyo Koho 78149945; Chem. Abstracts 1979, 90, 168303 h; Jpn. Kokai Tokkyo Koho 7844537; Chem. Abstracts 1978, 89, 108693 h; Jpn. Kokai Tokkyo 77131551; Chem. Abstracts 1978, 88, 104920 h. In a recent paper Piccolo et al. (J. Org. Chem. 52. 10, 1987) describe a synthesis leading to R-(-) ibuprofen, whereas Tsuchihashi et al. (Eur. Pat. Appl. EP 67,698, (1982); Chem. Abstracts 98, 178945 y, (1983) report a stereospecific synthesis of the R-(-) ibuprofen-methylester with excellent yields of about 75.0% and high optical purity (>95%) in contrast to Piccolo et al. (J. Org. Chem. 32, 10, 1987) having an optical purity of 15% only for the R-(-) ibuprofen. However, the same authors have reported chemical yields of 68% of S (+) ibuprofen having an optical purity of 75-78%, only. Hayashi, et al. (J. Org. Chem. 48, 2195, 1983; in: Asymmetric Reactions and Processes In Chemistry; eds E. L. Eliel and S. Otsuka, ACS-Symposium Ser. 1985, 1982, 177) describe a stereospecific synthesis of S-(+) ibuprofen through asymmetric Grignard cross-coupling which are catalyzed by chiral phosphine-nickel and phosphine-palladium complexes. The enantiomeric excess of the coupling products with various alkenyl halides under the influence of the above-mentioned metal phosphine complexes, including amino acids, depends strongly on the ligand and ranges up to 94% with enantiomeric excesses in the 60-70% range. A very useful ligand has been found in chiral 2-aminoalkyl phosphines achieving reasonable chemical yields and high optical purity. Furthermore, optically active 2-aryl-alkonates have been synthesized via a Friedel-Crafts synthesis by Sato and Murai (Jpn. Kokai Tokkyo Koho JP 61,210,049 t 86,210,049, 1986) yielding 46% S-(+) ibuprofen. Giordano et al. (EP application 0 158 913, 1985) have reported a process for the preparation of optically active 2-aryl-alkanoic acids and intermediates thereof by halogenation on the aliphatic carbon atom to the ketal group and rearrangements of the haloketals yielding pharmacologically active 2-aryl-alkanoic acids. A stereochemical synthesis of 2-aryl-propionic acids is described by Robertson et al. (EP application 0 205 215 A2, 1986) using 2-(R1)-alkane as the carbon source for the fungi Cordyceps in particular for Cordiceps militaris, yielding enantiomeric S-(+) products of high optical purity.
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aromatic substrates
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reactant
Reaction Step Nine
[Compound]
Name
R-(-) ibuprofen
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Ten

Synthesis routes and methods II

Procedure details

To a solution of benzyl 2-p-isobutylphenylpropionate (3 g) in methylene chloride (18 ml) are added a solution of aluminum chloride (4 g) in nitromethane (50 ml) and anisole (3 ml) at 0° C., and the mixture is stirred at room temperature for 6 hours. The reaction mixture is diluted with ethyl acetate, washed with hydrochloric acid and water, dried and evaporated. The residue is recrystallized with n-hexane to give 2-p-isobutylphenylpropionic acid (186 mg) melting at 75°-77.5° C. Yield 91%.
Name
benzyl 2-p-isobutylphenylpropionate
Quantity
3 g
Type
reactant
Reaction Step One
Quantity
4 g
Type
reactant
Reaction Step One
Quantity
18 mL
Type
solvent
Reaction Step One
Quantity
50 mL
Type
solvent
Reaction Step One
Quantity
3 mL
Type
solvent
Reaction Step One
Quantity
0 (± 1) mol
Type
solvent
Reaction Step Two

Synthesis routes and methods III

Procedure details

Three grams of flurbiprofen and 30 g of poloxamer 237 were heated at 110° C. for 10 minutes to obtain a liquified mixture and cooled to 60° C. Into this mixture, 5 g of polyethylene glycol 300, 10 g of ethanol and 52 g of pH 4 buffer solution were added at 60° C. to obtain an ibuprofen gel.
Quantity
0 (± 1) mol
Type
reactant
Reaction Step One
[Compound]
Name
poloxamer 237
Quantity
30 g
Type
reactant
Reaction Step One
[Compound]
Name
polyethylene glycol 300
Quantity
5 g
Type
reactant
Reaction Step Two
[Compound]
Name
buffer solution
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Two
Quantity
10 g
Type
reactant
Reaction Step Two

Synthesis routes and methods IV

Procedure details

The process according to claim 1, wherein 3-isobutyl-cyclohexanone and sodium pyruvate are heated in a HCl and acetic acid solution to give a mixture of condensation products and said condensation products are heated for 4 to 5 hours with pyridine hydrochloride to give p-isobutylhydratropic acid.
Quantity
0 (± 1) mol
Type
reactant
Reaction Step One
Name
sodium pyruvate
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Two
Name
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Three
Quantity
0 (± 1) mol
Type
solvent
Reaction Step Three
Quantity
0 (± 1) mol
Type
reactant
Reaction Step Four

Retrosynthesis Analysis

AI-Powered Synthesis Planning: Our tool employs the Template_relevance Pistachio, Template_relevance Bkms_metabolic, Template_relevance Pistachio_ringbreaker, Template_relevance Reaxys, Template_relevance Reaxys_biocatalysis model, leveraging a vast database of chemical reactions to predict feasible synthetic routes.

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Strategy Settings

Precursor scoring Relevance Heuristic
Min. plausibility 0.01
Model Template_relevance
Template Set Pistachio/Bkms_metabolic/Pistachio_ringbreaker/Reaxys/Reaxys_biocatalysis
Top-N result to add to graph 6

Feasible Synthetic Routes

Reactant of Route 1
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Ibuprofen
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Ibuprofen
Reactant of Route 3
Reactant of Route 3
Ibuprofen
Reactant of Route 4
Ibuprofen
Reactant of Route 5
Reactant of Route 5
Ibuprofen
Reactant of Route 6
Ibuprofen

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