162011-90-7 Usage
Description
Rofecoxib ts a non-steroidal anti-inflammatory drug (NSAID) launched
in Mexico, its first market, for the management of acute pain and the treatment
of osteoarthritis (OA) and primary dysmenorrhea. Rofecoxib can be obtained by
several different ways; one example is by arylation of a 4-bromofuranone with a
phenylboronic acid under Suzuki conditions. Rofecoxib is a highly selective
inhibitor of COX-2, the inducible isoform of cyclooxygenase and therefore
exhibits a potent antiinflammatory activity without concomitant gastric or renal
toxicities linked to the non-specific COX-1/2 inhibitors. In several clinical studies
in patients with knee or hip osteoarthritis, Rofecoxib was evaluated at 12.5-50
mg doses once daily: it demonstrated efficacy for all primary and secondary endpoints at doses considerably weaker than those for classical non-specific
NSAIDs, with good tolerance and less adverse effects. Selective COX-2
inhibitors potentially have a large spectrum of activity including new indications
such as Alzheimer's disease, colorectal cancer, irritable bowel disease or
urinary incontinence.
Chemical Properties
Off-White (Pale Yellow) Crystalline Powder
Originator
Merck (US)
Uses
Different sources of media describe the Uses of 162011-90-7 differently. You can refer to the following data:
1. A selective cyclooxygenase-2 (COX-2) inhibitor. Use as an anti-inflammatory, analgesic.
2. antipsychotic
3. Labeled Rizatriptan, intended for use as an internal standard for the quantification of Rizatriptan by GC- or LC-mass spectrometry.
4. Rofecoxib has been used in high performance bioaffinity chromatography.
Definition
ChEBI: A butenolide that is furan-2(5H)-one that is substituted by a phenyl group at position 3 and by a p-(methylsulfonyl)phenyl group at position 4. A selective cyclooxygenase 2 inhibitor, it was used from 1999 to 2004 for the tr
atment of ostoarthritis, but was withdrawn following concerns about an associated increased risk of heart attack and stroke.
Indications
Rofecoxib is approved for the treatment of osteoarthritis,
dysmenorrhea, and acute pain. The most
common adverse reactions to rofecoxib are mild to
moderate GI irritation (diarrhea, nausea, vomiting, dyspepsia,
abdominal pain). Lower extremity edema and
hypertension occur relatively frequently (about 3.5%).
It is not metabolized by CYP2C9, so rofecoxib should
not be subject to some of the interactions seen with
celecoxib. However, its metabolism is increased by the
coadministration of rifampin, which acts as a nonspecific
inducer of hepatic metabolism.
Brand name
Vioxx (Merck).
Biochem/physiol Actions
Rofecoxib is derived from furanone and has the ability to cross human placenta. Along with anti-inflammatory action, it possesses analgesic and antipyretic properties. Cytosolic hepatic enzymes are responsible for the metabolism of rofecoxib. It is known to cause oligohydramnios and ductus arteriosus constrictions. Rofecoxib inhibits the action of CYP1A2 (cytochrome P450 family 1 subfamily A member 2). It might be associated with aseptic meningitis. Rofecoxib is known to ameliorate the risk of colorectal adenoma, but might contribute to toxicity.
Mechanism of action
Rofecoxib is excreted primarily in the urine (72%) as metabolites. Less than 1% is excreted in the urine as
unchanged drug, whereas approximately 14% is excreted in the feces as unchanged drug. Although the metabolism
of rofecoxib has not been fully determined, the microsomal cytochrome P450 system appears to play only a minor
role—a major difference in the metabolic routes of rofecoxib and celecoxib. The major metabolic route appears to
form reduction of the dihydrofuranone ring system by cystolic enzymes to the to cis- and trans- dihydro derivatives.
Also isolated is the glucuronide of a hydroxy derivative that results from CYP2C9 oxidative metabolism. None of the
isolated metabolites of rofecoxib possess pharmacological activity as COX-1 or COX-2 inhibitors.
Pharmacokinetics
Rofecoxib has been synthesized by a number of synthetic routes that have been summarized elsewhere. It was
the second selective COX-2 inhibitor to be marketed. Rofecoxib is well absorbed from the GI tract on oral
administration, with peak plasma levels generally being attained within 2 to 3 hours of dosing. Bioavailability
averages 93% following administration of a single dose. The area under the plasma concentration–time curve is
increased in patients older than 65 years compared to younger adults and is increased slightly in black and Hispanic
patients compared with white patients, but the difference is not considered to be clinically significant.
Clinical Use
Rofecoxib was indicated for the relief of the signs and symptoms of osteoarthritis, for the management of acute pain
in adults, and for the treatment of primary
dysmenorrhea.
References
1) Chan et al. (1999), Rofecoxib [Vioxx, MK-0966; 4-(4′-methylsulfonylphenyl)-3-phenyl-2-(5H)-furanone]: a potent and orally active cyclooxygenase-2 inhibitor. Pharmacological and biochemical profiles; J. Pharmacol. Exp. Ther., 290 551
2) Catalla-Lawson et al. (2013), Effects of specific inhibition of cyclooxygenase-2 on sodium balance, hemodynamics and vasoactive eicosanoids; J. Pharmacol. Exp. Ther., 289 735
Check Digit Verification of cas no
The CAS Registry Mumber 162011-90-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,2,0,1 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 162011-90:
(8*1)+(7*6)+(6*2)+(5*0)+(4*1)+(3*1)+(2*9)+(1*0)=87
87 % 10 = 7
So 162011-90-7 is a valid CAS Registry Number.
InChI:InChI=1/C17H14O4S/c1-22(19,20)14-9-7-12(8-10-14)15-11-21-17(18)16(15)13-5-3-2-4-6-13/h2-10H,11H2,1H3
162011-90-7Relevant articles and documents
Electrochemical oxygenation of sulfides with molecular oxygen or water: Switchable preparation of sulfoxides and sulfones
Li, Jin-Heng,Li, Yang,Sun, Qing,Xue, Qi,Zhang, Ting-Ting
supporting information, p. 10314 - 10318 (2021/12/17)
A practical and eco-friendly method for the controllable aerobic oxygenation of sulfides by electrochemical catalysis was developed. The switchable preparation of sulfoxides and sulfones was effectively controlled by reaction time, in which both molecular oxygen and water can be used as the oxygen source under catalyst and external oxidant-free conditions. The electrochemical protocol features a broad substrate scope and excellent site selectivity and is successfully applied to the modification of some sulfide-containing pharmaceuticals and their derivatives. This journal is
Palladium-Catalyzed Cross-Coupling of Alkenyl Carboxylates
Becica, Joseph,Heath, Oliver R. J.,Leitch, David C.,Zheng, Cameron H. M.
supporting information, p. 17277 - 17281 (2020/07/31)
Carboxylate esters have many desirable features as electrophiles for catalytic cross-coupling: they are easy to access, robust during multistep synthesis, and mass-efficient in coupling reactions. Alkenyl carboxylates, a class of readily prepared non-aromatic electrophiles, remain difficult to functionalize through cross-coupling. We demonstrate that Pd catalysis is effective for coupling electron-deficient alkenyl carboxylates with arylboronic acids in the absence of base or oxidants. Furthermore, these reactions can proceed by two distinct mechanisms for C?O bond activation. A Pd0/II catalytic cycle is viable when using a Pd0 precatalyst, with turnover-limiting C?O oxidative addition; however, an alternative pathway that involves alkene carbopalladation and β-carboxyl elimination is proposed for PdII precatalysts. This work provides a clear path toward engaging myriad oxygen-based electrophiles in Pd-catalyzed cross-coupling.
Selective oxidation of (hetero)sulfides with molecular oxygen under clean conditions
Liu, Kai-Jian,Deng, Ji-Hui,Yang, Jie,Gong, Shao-Feng,Lin, Ying-Wu,He, Jun-Yi,Cao, Zhong,He, Wei-Min
supporting information, p. 433 - 438 (2020/02/13)
The development of eco-friendly and switchable catalytic systems for the conversion of a sole raw-material into distinct high-value products is a particularly attractive concept and a daunting synthetic challenge. In the present work, the first example of efficient and selective oxidation of sulfides to sulfones and sulfoxides using molecular oxygen under clean conditions was established.
