Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  API >  Circulatory system drugs >  Antiarrhythmics Drugs >  IBUTILIDE

IBUTILIDE

Basic information Safety Supplier Related

IBUTILIDE Basic information

Product Name:
IBUTILIDE
Synonyms:
  • IBUTILIDE
  • IBUTIBIDE
  • (±)-N-[4-[4-(Ethylheptylamino)-1-hydroxybutyl]phenyl]methanesulfonamide
  • Corvert
  • U-70226E
  • 122647-32-9 (Fumarate)
  • 4-(N-Ethylheptylamino)-1-(4-methylsulfonylaminophenyl)-1-butanol
  • Ibutilida
CAS:
122647-31-8
MF:
C20H36N2O3S
MW:
384.58
Mol File:
122647-31-8.mol
More
Less

IBUTILIDE Chemical Properties

Boiling point:
522.4±60.0 °C(Predicted)
Density 
1.099±0.06 g/cm3(Predicted)
pka
8.54±0.10(Predicted)
CAS DataBase Reference
122647-31-8
More
Less

IBUTILIDE Usage And Synthesis

Originator

Corvert,Pharmacia and Upjohn,USA

Uses

Cardiac depressant (anti-arrhythmic).

Definition

ChEBI: Ibutilide is an organic amino compound and a member of benzenes.

Manufacturing Process

A mechanically stirred solution of aniline (139.7 g, 1.5 mole) in pyridine (2 L), under N2 is cooled in an ice bath. Methanesulfonyl chloride (171.8 g, 1.5 mole) is added dropwise to this solution while the temperature is maintained at 15°-20°C, which results in a red-orange color change in the reaction mixture. After the addition is complete the ice bath is removed and the reaction is allowed to continue at room temperature. The reaction is complete after 2.5 h. The reaction mixture is concentrated in vacuo and the residue is combined with 700 ml of water which results in crystallization of a dark red material.
This material is filtered and washed several times with water. The filtered material is dissolved in CH2Cl2, washed with brine, dried (Na2SO4), and concentrated in vacuo. The residue is dissolved in hot ethyl acetate, treated with Darco (decolorizing carbon) and crystallized to yield methanesulfonanilide which had a melting point: 93°-94°C.
A mechanically stirred suspension of aluminum chloride (88.0 g, 0.66 moles) and 150 ml of carbon disulfide under N2 is cooled in an ice bath. Methanesulfonanilide (30.0 g, 0.175 mol) and succinic anhydride (17.5 g, 0.175 mol) are combined and added rapidly to the cooled reaction mixture. The ice bath is removed and the mixture is stirred at room temperature for 6 h. The reaction mixture is then heated to 55°C and allowed to continue for 18 h. The reaction mixture is separated into two layers the bottom of which solidifies.
The upper layer is decanted and the remaining solid layer is decomposed with ice. The resulting suspension is filtered and the solid is washed several times with methylene chloride and dissolved in a mixture of saturated sodium bicarbonate (500 ml) and water (500 ml). This solution is acidified (pH 2) with HCl and the resulting precipitate is collected by filtration, redissolved in NaHCO3 and reprecipitated with HCl. The solid, 4-[(methylsulfonyl)amino]-γ- oxobenzenebutanoic acid, is collected by filtration. Melting point 198°-200°C.
A stirred solution of 4-[(methylsulfonyl)amino]-γ-oxobenzenebutanoic acid (12.0 g, 0.044 mol) in DMF (100 ml) under N2 is cooled in an ice bath to 5°C and treated with 1-hydroxybenzotriazole (5.94 g, 0.044 mol) and N,N'- dicyclohexylcarbodiimide (9.08 g, 0.044 mol). After 1 hour, ethylheptylamine (6.3 g, 0.044 mol) is added, after an additional 30 min the ice bath is removed and the mixture is kept at room temperature for 18 h.
The reaction mixture is filtered over a Celite filter aid and the filtrate is concentrated under vacuum. The resulting material is dissolved in CH2Cl2, washed with dilute HCl, NaHCO3 and concentrated. The residue is chromatographed over silica gel (1.25 kg) with 5% MeOH : 1% NH4OH : CH2Cl2. The N-ethyl-N-heptyl-γ-oxo-4-[(methylsulfonyl)amino]benzenebutanamide thus obtained is crystallized from EtOAc to yield 10.77 g, melting point 100°-102°C.
To a N2 covered suspension of 0.29 g (7.57 mmol) of LiAlH4 in 10 ml of THF cooled in an ice bath is added a solution of 1.0 g (2.52 mmol) of N-ethyl-Nheptyl-γ-oxo-4-[methylsulfonyl)amino]benzenebutanamide in 10 ml of THF over 6 min. The ice bath is then removed and the mixture heated at reflux for 27 h and then stirred at room temperature for 2 days. The mixture is cooled in an ice bath and there is added dropwise 10 ml of aqueous sodium potassium tartrate followed by EtOAc and H2O to keep the mixture fluid.
The aqueous fraction is extracted once with EtOAc and the combined EtOAc fractions are washed in turn with H2O and concentrated in vacuo. The residue is chromatographed on a 200 ml silica gel column (elution with 6% MeOH : CH2Cl2 containing 0.5% NH4OH) and 9.7 ml fractions were collected and treated with Et2O and aqueous NaHCO3. The organic layer is concentrated in vacuo to yield N-[4-[4-(ethylheptylamino)-1-hydroxybutyl]phenyl] methanesulfonamide.
Preparation of fumarate (WO Patent 01/07417). To dichloromethane solution of 4-[4-N-[(Ethylheptylamino)-1-hydroxybutyl]phenyl]methanesulfonamide is added hemimolar quantities of fumaric acid and heated to reflux until a clear solution was obtained. Upon cooling the fumarate of 4-[4-N- [(Ethylheptylamino)-1-hydroxybutyl]phenyl]methanesulfonamide was obtained.

brand name

Inocor (Sterling Winthrop).

Therapeutic Function

Antiarrhythmic

General Description

Ibutilide, N-{4-[4-(ethylheptylamino)-1-hydroxybutyl]phenyl}methanesulfonamide (Corvert), aclass III antiarrhythmic belonging to the methanesulfonanilideclass of agents, is indicated for rapid conversion ofatrial fibrillation or atrial flutter to normal sinus rhythm.Unlike dofetilide, it is not highly specific for the delayedrectifier potassium currents (Ikr) and does have some affinityfor sodium channels.

Clinical Use

Ibutilide (Corvert) is another methanesulfonanilide derivative , but unlike sotalol, it lacks any β-adrenergic blocking activity. Like sotalol, it exhibits electrophysiologic effects characteristic of Class III. Ibutilide is used only by intravenous infusion as its fumarate salt.

IBUTILIDE Preparation Products And Raw materials

Raw materials

IBUTILIDESupplier

ChemStrong Scientific Co.,Ltd
Tel
0755-0755-66853366 13670046396
Email
sales@chem-strong.com
Shanghai Tombiopharma Chemical Co. Ltd.
Tel
13391076197
Email
tombiopharma@163.com
Chengdu Saint - Kay Biotechnology Co., Ltd.
Tel
028-85157043 15882256948
Email
676046971@qq.com
Aishilun biotechnology (Shanghai) co., LTD
Tel
021-50676523 18019098996
Email
info@acelybio.com
Shaanxi Dideu Medichem Co. Ltd
Tel
+86-029-89586680 +86-18192503167
Email
1026@dideu.com