U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 549/467 - Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding


Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein nitrogen is attached directly to the hetero
No. of patents: 446
Last issue date: 09/20/2011


1                      
NumberTitleIssue Date
8022232Method for manufacture of escitalopram
This patent discloses a method for resolution of 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a racemic or non-racemic enantiomer mixture into its isolated enantiomers, said method comprising the step of fractionally c...
09/20/2011
7989645Process for preparation of citalopram and enantiomers
The present invention provides a process for preparation of 1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran car-bonitrile comprising reacting a compound of formula IVa, in the presence of a base with a compound of formula RX,
08/02/2011
7964742Process for preparation of citalopram and enantiomers
The present invention provides a process for preparation of 1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile comprising reacting a compound of formula IVa, in the presence of a base with a compound of formula RX,
06/21/2011
7939680Process for the preparation of Escitalopram
The present invention relates to an improved process for the preparation of Escitalopram of the Formula (I), which comprises, isolation of Diol compound as an oxalate salt, resolution of Diol compound and cyclization of resolved compound of Formula (VII). The presen...
05/10/2011
7582780Method for the separation of intermediates which may be used for the preparation of escitalopram
The invention relates to a method of separating and isolating an acylated derivative of 4-[(S)-4-dimethylamino-1-(4-fluorophenyl)-1-hydroxybutyl]-3-hydroxymethylbenzonitrile by reaction of a mixture of the 4-[(S)-4-dimethylamino-1-(4-fluorophenyl)-1-hydroxy-butyl]-3...
09/01/2009
7566793Process for resolving citalopram
The (S)-citalopram content of a mixture of (R)- and (S)-citalopram can be enriched by using L-tartaric acid as the resolving agent in the presence of formaldehyde. ...
07/28/2009
7560576Crystalline base of escitalopram and orodispersible tablets comprising escitalopram base
The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzo-furancarbonitrile, formulations of said base, a process for the preparation of purified ...
07/14/2009
7511161Process for the purification of citalopram
A process of purifying citalopram, either in racemic or enantiomeric form, which process comprises (i) providing a crude mixture comprising citalopram, either in racemic or enantiomeric form, dissolved in a water immiscible organic solvent, and which mixture also in...
03/31/2009
7482477Process for the preparation of citalopram and escitalopram
A process is described for the preparation of citalopram (I) and of the active enantiomer thereof, escitalopram (II), which process comprises the cyclisation reaction of the corresponding precursor diol of the formula III or, respectively, IV in the presence of an a...
01/27/2009
7482476Process for the preparation of 5-cyanophthalide starting from 5-carboxyphthalide
A new process is described for obtaining 5-cyanophthalide, which is an intermediate used for the synthesis of citalopram and its active enantiomer S(+) citalopram, both of which are known active ingredients commonly used for treating depression. The process involves...
01/27/2009
7470799Dihydrobenzofuran derivatives and uses thereof
Compounds of formula I are provided: wherein each of R1, R2, y, m, n, and Ar are as defined, and described in classes and subclasses herein, which are agonists or partial agonists of melatoninergic rec...
12/30/2008
7439368Process for producing 3-acylaminobenzofuran-2-carboxylic acid derivative
The present invention provides a process of preparing a compound of the formula [I]: wherein X is a group of the formula: —N═ or —CH═; R1 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower a...
10/21/2008
7435837Dihydrobenzofuranyl alkanamine derivatives and methods for using same
Compounds of Formula 1 or pharmaceutically acceptable salts thereof are provided: which are agonists or partial agonists of the 2C subtype of brain serotonin receptors. The compounds, and compositions containing the compoun...
10/14/2008
7420070Process for preparing optically active 2,3-dihydrobenzofuran compounds
A process for preparing optically active 2,3-dihydrobenzofuran compounds which comprises subjecting a 2,3-dihydrobenzofuran compound represented by the general formula or a salt thereof to optical resolution with an optically active acid compound: ...
09/02/2008
7420068Crystalline composition containing escitalopram
The present invention discloses crystalline particles of escitalopram oxalate which either have a broad particle size distribution or comprise at least 0.01% (w/w) of Z-4-(4-dimethylamino-1-(4-fluorophenyl)-but-1-enyl)-3-hydroxymethyl-benzonitrile, said particles be...
09/02/2008
7420069Crystalline composition containing escitalopram
Crystalline particles of escitalopram oxalate with a particle size of at least 40 μm is disclosed. Method for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles are also disclosed. ...
09/02/2008
7420001Biaryl sulfonamides and methods for using same
The present invention relates to biaryl sulfonamides and their use as, for example, metalloproteinase inhibitors. ...
09/02/2008
7411077Process for the preparation of a cyano-isobenzofuran
A process for the preparation of citalopram and the pharmaceutically acceptable salts therof is disclosed by reacting 5-cyanophthalide with a 4-fluorophenyl magnesium halide, reducing the 3-hydroxymethyl-4-(4-fluorobenzoyl)benzonitrile with an agent reducing ketones...
08/12/2008
7405311Antagonist of the magnesium binding defect as therapeutic agents and methods for treatment of abnormal physiological states
This invention provides a class of therapeutic compounds and methods for the treatment of mammals with physiological disorders, such as for example a frequently occurring type of essential hypertension, which are critically associated with the decreased binding of m...
07/29/2008
7402687Dihydrobenzofuran derivatives and uses thereof
Compounds of formula I are described herein which are agonists or partial agonists of the 2C subtype of brain serotonin receptors. or pharmaceutically acceptable salts thereof, wherein each of R1, R2, ...
07/22/2008
7396857Therapeutic combinations for the treatment or prevention of depression
Therapeutic combinations useful in the treatment or prevention of depression or other mood disorders, to pharmaceutical compositions containing said combinations, and to their use in the treatment or prophylaxis of depression or other mood disorders are provided. Su...
07/08/2008
7368477Benzofuranyl alkanamine derivatives and uses thereof
Compounds of formula I or pharmaceutically acceptable salts thereof are provided: wherein each of R1, R1′, R2, R3, R4, n, and Ar are as defined, and described in clas...
05/06/2008
7365216Process for the production of citalopram
The invention relates to a process for the manufacture of salts of citalopram in high purity. By the careful selection of solvents and the careful manipulation of the pH value, citalopram salts may be isolated in the absence of 5-chlorocitalopram, 5-bromocitalo-pram...
04/29/2008
7364823Amine compound, electrophotographic photoreceptor using the amine compound and image forming apparatus having the same
An amine compound represented by the following general formula (1) is incorporated as a charge-transporting substance into a charge-transporting layer of an electrophotographic photoreceptor. ...
04/29/2008
7351735Benzofuran and benzothiophene derivatives useful in the treatment of hyper-proliferative disorders
This invention relates to novel benzofuran and benzothiophene derivatives of the general table formula and their use for the treatment of hyper-proliferative disorders ...
04/01/2008
7351842Compounds for treatment of cardiac arrhythmia and methods of use
The subject invention provides novel compounds for treatment of cardiac arrhythmia and methods of use. ...
04/01/2008
7339078Bis-amino acid hydroxyethylamino sulfonamide retroviral protease inhibitors
Selected bis-amino acid hydroxyethylamino sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease. The present invention relates to such retroviral protease inhibitors and, more particularly, relates to ...
03/04/2008
7332518Carboxamides as fungicides in agriculture
The invention concerns novel carboxamides of formula (I) wherein A is (A1), (A2), (A3), (A4), (A5); Q is (Q1), (Q2), (Q3), (Q4), (Q5), (Q6); R1 is CH2 R2, CH2CH═CHR2, CH═C═CHR2 or COR3
02/19/2008
7276612Hydroxamates as therapeutic agents
The present invention is directed to certain hydroxamate derivatives that are useful in the treatment of hepatitis C. These compounds are also inhibitors of histone deacetylase and are therefore useful in the treatment of diseases associated with histone deacetylase...
10/02/2007
7273886Benzofuran inhibitors of factor VIIa
Compounds of Formula I are useful for inhibiting serine protease enzymes, such as TF/factor VIIa, factor Xa, thrombin and kallikrein and have improved pharmacokinetic properties. These compounds may be used in methods of preventing and/or treating clotting disorders...
09/25/2007
7271273Method for the preparation of citalopram
The invention provides a new and improved method for the preparation of 5-cyano-phtalid, which is a key intermediate in the preparation of the antidepressant compound citalopram. ...
09/18/2007
7271194Treatment of neurotic disorders
Use of escitalopram (the S-(+)-enantiomer of citalopram) or a pharmaceutically acceptable salt thereof for the preparation of a medicament useful in the treatment of neurotic disorders is provided, including anxiety states, in particular generalised anxiety disorder...
09/18/2007
7262316Process for producing aromatic nitrile compound
A novel process for industrially producing an aromatic nitrile compound represented by the following general formula (3): characterized in that one of an aromatic hydroxymethyl compound, an aromatic alkoxymethyl ...
08/28/2007
7176238Nitrostated and nitrosylated prostaglandins, compositions and methods of use
The present invention describes novel nitrosated and/or nitrosylated prostaglandins, and novel compositions comprising at least one nitrosated and/or nitrosylated prostaglandin, and, optionally, at least one compound that donates, transfers or releases nitric oxide,...
02/13/2007
7166729Process for the preparation of 5-substituted isobenzofurans
There is described a process for the preparation of citalopram and of its pharmaceutically acceptable salts, which comprises treating a 1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5 isobenzofurancarbaldoxime, O-substituted preferably with a diphenylme...
01/23/2007
71639573-(Cyclopenten-1-yl)-benzyl-or 3-(cyclopenten-1-yl)-heteroarylmethyl-amine derivatives and use thereof as medicines for treating schizophrenia
The invention provides compounds of the formula: wherein (a) is a single or double bond; W is CH, CH2, CHCH3, CCH3, C(CH3)2, C(CH2)2 or...
01/16/2007
7161033Bis-amino acid hydroxyethylamino sulfonamide retroviral protease inhibitors
Selected bis-amino acid hydroxyethylamino sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease. The present invention relates to such retroviral protease inhibitors and, more particularly, relates to ...
01/09/2007
7153871Phosphodiesterase 4 inhibitors, including aminoindazole and aminobenzofuran analogs
PDE4 inhibition is achieved by novel compounds, e.g., aminoindazole and aminobenzofuran analogs. The compounds of the present invention are of Formulas I and II: wherein R1, R2, R3
12/26/2006
7148364Process for the preparation of 1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile
The present invention provides a process for the preparation of crude 1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile base with substantially low levels of impurities by arresting the formation of substantial amount of carboxa...
12/12/2006
7141604Citalopram for the treatment of elevated blood pressure
The invention relates to the use of citalopram or a pharmaceutically acceptable salt thereof for the preparation of pharmaceutical compositions suitable for the treatment of elevated (high) blood pressure, normalization of blood pressure or the decrease of elevated ...
11/28/2006
1                      
 
Sign InRegister
Username  
Password   
forgot password?