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Class 548/250 - Tetrazoles (including hydrogenated)


Subclass of Class 548 - Organic compounds -- part of the class 532-570 series
Definition: Compounds in which the five-membered hetero ring consists
No. of patents: 315
Last issue date: 12/13/2011


1                
NumberTitleIssue Date
8076492Process for preparing trityl olmesartan medoxomil and olmesartan medoxomil
A process for the preparation of trityl olmesartan comprising (a) condensing 4-(1-hydroxy-1-methylethyl)-2-propyl-imidazol-5-carboxylic acid alkyl ester with trityl biphenyl bromide in the presence of a polar aprotic solvent and a base selected from the group consis...
12/13/2011
8071784Lead-free primary explosive composition and method of preparation
Embodiments of the present subject matter provide a compound and material that may be used as a lead-free primary explosive. An embodiment of the present subject matter provides the compound copper(I) nitrotetrazolate. Certain embodiments of the present subject matt...
12/06/2011
8053582Process for making tetrazole based cross-linked polymers
A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100Â...
11/08/2011
8039636Methods for making 4-tetrazolyl-4-phenylpiperidine compounds
Methods, composition, and intermediates are disclosed that are useful for making 4-Tetrazolyl-4-phenylpiperidine Compounds according to Formula I, where Ar1 is —C3-C8 cycloalkyl, phenyl, n...
10/18/2011
7943779Process for the preparation of olmesartan medoxomil
The present invention relates to an improved process for the manufacture of olmesartan and pharmaceutically acceptable salts and esters thereof as an active ingredient of a medicament for the treatment of hypertension and related diseases and conditions. ...
05/17/2011
7923566Alternative process for the preparation of losartan
The invention relates to an improved process for the preparation of Losartan. The process comprising reacting 2-n-butyl-4-chloro-5-formyl imidazole with 2-(4-bromomethyl) benzonitrile in the presence of a phase transfer catalyst and an alkali, and reducing the resul...
04/12/2011
7884212Process for the preparation of candesartan cilexetil
The present invention provides an improved synthesis for the manufacture of candesartan and pharmaceutically acceptable salts and esters thereof as active ingredients of a medicament for the treatment of hypertension and related diseases and conditions which compris...
02/08/2011
7880014Angiotensin II receptor antagonists
A compound having the structure wherein R is an angiotensin receptor antagonist active group, Y is -Y1-Y2-Y3-Y4-Y5-; Y1 is C(R1R2); R
02/01/2011
7880015Process for the preparation of angiotensin II antagonist
The present invention provides a method for the preparation of N-(1-oxopentyl)-N-[[2′-(1H-tetra-zol-5-yl)[1,1′-biphenyl]-4-yl]methyl]-L-valine (Valsartan) which comprises; treating N-[[2′-(1-triphenylmethyl-tetra-zol-5-yl)biphenyl-4-yl]methyl]-L-valine methyl ...
02/01/2011
7838683Synthesis of irbesartan
Provided are a method of making irbesartan via a Suzuki coupling reaction and a novel intermediate, 2-butyl-3-(4′-bromobenzyl)-1,3-diazaspiro[4.4]non-1-ene-4-one, for such process. The novel process includes the step of reacting such intermediate with a protected ...
11/23/2010
7745633Tetrazole based linear polymers
A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer. ...
06/29/2010
7741492Method for obtaining a pharmaceutically active compound (Irbesartan) and its synthesis intermediate
It is provided a method for obtaining Irbesartan polymorph A, with few synthesis steps, by coupling the intermediate of formula (II) with the compound of formula (III), neutralising one of its alkaline salts in an aqueous medium and recrystallising the crude product...
06/22/2010
7723529Process for preparing nitrooxy esters, nitrooxy thioesters nitrooxy carbonates and nitrooxy thiocarbinates, intermediates useful in said process and preparation thereof
The present invention relates to a process for preparing nitrooxy esters, nitrooxy thioesters, nitrooxy carbonates and nitrooxy thiocarbonates of compounds having at least an hydroxyl or thiol functional group, according to the following reaction scheme
05/25/2010
7714143Method of making monoammonium salt of 5,5′-bis-1H-tetrazole
A method of forming monoammonium salt of 5,5′-bis-1H-tetrazole (BTA-1NH3) is presented comprising the steps of charging a mixing vessel with a solution of free BTA acid and distilled water, adding ammonium hydroxide in excess to obtain a pH of at least 9.5 and mix...
05/11/2010
7709655Clickphosphines for transition metal-catalyzed reactions
Phosphine triazole ligand compounds, prepared through click chemistry, complex with transition metals to form transition metal-phosphine triazole ligand complexes. These complexes are useful catalysts in coupling reactions such as Suzuki-Miyaura coupling, Stille cou...
05/04/2010
7692024Gas generant compositions
A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of R3—R1—R2, wherein R1 is a benzene ring with nitro substitution, R2 is a tetrazolyl group with a C—C bond to...
04/06/2010
7692023Candesartan cilexetil polymorphs
Provided are candesartan cilexetil forms and methods of their preparation. Also provided are pharmaceutical compositions prepared by combining at least one pharmaceutically-acceptable execipient with at least one candesartan cilexetil form of the invention. ...
04/06/2010
7667045Gas generant and synthesis
A vinylated tetrazole substituted at the 5-position of the tetrazole ring is formed by a water-based method. A gas generating composition 12 containing the vinylated tetrazole is contained within an exemplary gas generator 10. A gas generating system
02/23/2010
7652147Process for preparation of Irbesartan
A process for the preparation of Irbesartan of formula (I) using the steps of: (i) reacting 4′ aminomethyl-2-cyano biphenyl of formula (VI) with 1-veleramido cyclopentane carboxylic acid...
01/26/2010
7579480Alkoxy-(tetrazol-1-yl)benzaldehyde compound and process for producing the same
The present invention relates to a process for producing an alkoxy-(tetrazol-1-yl)benzaldehyde compound represented by Formula (2): wherein A1 is an alkoxy group, and A2 is a hydrogen atom, alkyl group...
08/25/2009
7557219Methods for making 4-tetrazolyl-4-phenylpiperidine compounds
Methods, composition, and intermediates are disclosed that are useful for making 4-Tetrazolyl-4-phenylpiperidine Compounds according to Formula I, where Ar1 is —C3-C8 cycloalkyl, phenyl, n...
07/07/2009
7528257Process for making di-functional tetrazole diols to produce tetrazole base polymers
A process for making energetic cast cured binders by making di-tetrazoles to produce di-functional tetrazole diols for producing tetrazole base polymers. Embodiments of the present invention relates generally to a process for preparation of a monomer including react...
05/05/2009
7517997Process for making tetrazole based cross-linked polymers
A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100Â...
04/14/2009
7498446Primary explosives
The present invention provides a compound of the formula (Cat)+z[M++(5-nitro-1H-tetrazolato-N2)−x(H2O)y] where x is 3 or 4, y is 2 or 3, x+y is 6, z is 1 or 2, and M++ is selec...
03/03/2009
7446208Process for making tetrazole based linear polymers
A process for preparation of polymers including reacting an effective amount of tetrazole diols or tetrazole polyols with isocyanate resins to produce tetrazole based linear isocyanate polymers. ...
11/04/2008
7402679One-pot process for making multifunctional tetrazole polyols to produce tetrazole based polymers
A process for making energetic urethane cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer inclu...
07/22/2008
7396938Process for making multifunctional tetrazole polyols to produce tetrazole based polymers
A process for making energetic cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reac...
07/08/2008
7385062Process for the preparation of phenyltetrazole derivatives
A process for the preparation of phenyltetrazole derivatives of formula (II) wherein R and Y are as defined in the disclosure, by direct ortho-metallation of (tetrazol-5-γl)benzene. The compounds of formula (II) are useful intermediates for the preparation of angio...
06/10/2008
7378433N-[4-(heteroarylmethyl)phenyl]-heteroarylamines
The present invention is concerned with compounds of formula the N-oxides, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein R1 is hydrogen, hydroxy, C1-...
05/27/2008
7378421Chromenone derivatives
Novel compounds of the formula I in which R1, R2, R3 and Het are as defined herein, which are inhibitors of tyrosine kinases and/or Raf kinases and can be employed for...
05/27/2008
7361770Process for preparation of valsartan
Valsartan of formula (I) is prepared by hydrolysis of valsartan benzyl ester with an alkali metal hydroxide, washing with an organic solvent, acidifying with hydrochloric acid and isolating valsartan from the reaction mixture ...
04/22/2008
7361677Polycyclic sulphamate compounds suitable for use as inhibitors of aromatase and/or sulphatase
There is provided a compound of Formula I wherein each T is independently selected from H, hydrocarbyl, —F—R, and a bond with one of D, E, P or Q, or together with one of P and Q forms a ring; Z is a suitable atom the v...
04/22/2008
7345072Phenyltetrazole compounds
Novel phenyltetrazole compounds useful as intermediates in the preparation of angiotensin II antagonists and the processes for the conversion thereof to biologically active molecules. ...
03/18/2008
7341606Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one bicyclic fused 5-5-membered aza heteroaromatic keratin dyeing compounds having a ring junction nitrogen and an N-hydroxy or N-amino group and derivative...
03/11/2008
7342039Substituted indole oximes
The present invention relates to substituted indole oximes and methods of using them. ...
03/11/2008
7332514Dibenzylamine compound and medicinal use thereof
A dibenzylamine compound represented by the formula (1) wherein R1 and R2 are each a C1-6 alkyl group optionally substituted by halogen atoms and the like; R3, R4 ...
02/19/2008
7332612Amorphous and crystalline forms of losartan potassium and process for their preparation
This invention relates to novel amorphous losartan potassium, novel losartan potassium in a crystalline form that is a hydrate, novel crystalline losartan potassium Form IV and solvates thereof, novel crystalline losartan potassium Form V and solvates thereof, to pr...
02/19/2008
7326812Arylsulfonamidobenzylic compounds
Arylsulfonamidobenzyl alcohols, amines and sulfonamides are provided which are useful in treating lipid disorders, metabolic diseases and cell-proliferative diseases. ...
02/05/2008
7312340Synthesis of 2-butyl-3-(1-trityl-1H-tetrazol-5-YL)biphenyl-4-YL)-1,3-diazaspiro[4,4]- non-ene-4-one
Provided is a novel method of making 2-butyl-3-[[2′(1-trityl-1H-tetrazol-5-yl)biphen-4-yl]methyl]-1,3-diazaspiro[4.4]non-1-ene-4-one, which can be converted to irbesartan. Also provided are methods of making irbesartan. ...
12/25/2007
7301028Mitotic kinesin inhibitors
The present invention relates to dihydropyrazole compounds that are useful for treating cellular proliferative diseases, for treating disorders associated with KSP kinesin activity, and for inhibiting KSP kinesin. The invention also related to compositions which com...
11/27/2007
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