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Class Information
Number: 544/358
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) > The six-membered hetero ring consists of two nitrogens and four carbons (e.g., 1,2-diazines, etc.) > 1,4-diazines > Piperazines (i.e., fully hydrogenated 1,4-diazines)
Description: Compounds wherein the six-membered hetero ring, having nitrogens in the 1- and 4-positions, has single bonds only between ring members, i.e., piperazines.










Sub-classes under this class:

Class Number Class Name Patents
544/359 Additional hetero ring containing 447
544/380 Polycyclo-carbocyclic ring system having at least three cyclos 160
544/382 Nitrogen attached directly to the piperazine ring by nonionic bonding 119
544/383 Chalcogen attached directly to piperazine ring nitrogen by nonionic bonding 284
544/384 Chalcogen bonded directly to piperazine ring carbon 177
544/386 Having -c(=x)-, wherein x is chalcogen, bonded directly to the piperazine ring 285
544/392 Phenyl or naphthyl bonded directly to ring nitrogen of the piperazine ring 303
544/396 Plural carbocyclic rings bonded directly to the same acyclic carbon 153
544/398 Chalcogen attached indirectly to the piperazine ring by nonionic bonding 355
544/402 Nitrogen attached indirectly to the piperazine ring by nonionic bonding 307
544/403 Carbocyclic ring containing 163
544/404 N-hydrocarbyl piperazines 85


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8017613 Beta-3 receptor ligands and their use in therapy Sep. 13, 2011
8013152 Biphenyl compounds useful as muscarinic receptor antagonists Sep. 6, 2011
7998949 Bicyclic heterocycles, drugs containing said compounds, use thereof, and method for production thereof Aug. 16, 2011
7989454 Leukotriene B4 inhibitors Aug. 2, 2011
7985751 Piperazine derivatives Jul. 26, 2011
7973037 Cathepsin cysteine protease inhibitors Jul. 5, 2011
7964601 Melanocortin receptor-specific compounds Jun. 21, 2011
7956057 Imidazole compounds Jun. 7, 2011
7951806 Plasminogen activator inhibitor-1 inhibitor May. 31, 2011
7947513 Sets and compositions pertaining to analyte determination May. 24, 2011
7935719 N-substituted-azacyclylamines as histamine-3 antagonists May. 3, 2011
7932388 Isotopically enriched N-substituted piperazines and methods for the preparation thereof Apr. 26, 2011
7906341 Methods, mixtures, kits and compositions pertaining to analyte determination Mar. 15, 2011
7893062 Pyrrolidine derivatives as dual NK1/NK3 receptor antagonists Feb. 22, 2011
7880036 Production method for ethyleneamine mixtures Feb. 1, 2011
7872021 LXR receptor modulators Jan. 18, 2011
7858618 Compounds Dec. 28, 2010
7858635 Spiro compounds as modulators of muscarinic receptors Dec. 28, 2010
7851474 Dipiperazinyl ketones and related analogues Dec. 14, 2010
7842808 Anti-migraine spirocycles Nov. 30, 2010
7834018 Aminopyridine derivatives having aurora a selective inhibitory action Nov. 16, 2010
7829565 Indole derivatives as serotonin reuptake inhibitors Nov. 9, 2010
7829711 Crystalline materials of 1-(4-benzoyl-piperazin-1-yl)-2-[4-methoxy-7-(3-methyl-[1,2,4]triazol-1-yl- )-1H-pyrrolo[2,3-C]pyridine-3-yl]-ethane-1,2-dione Nov. 9, 2010
7825247 N-phenyl-2-pyrimidine-amine derivatives Nov. 2, 2010
7825120 Certain substituted ((piperazin-1-ylmethyl)benzyl)ureas Nov. 2, 2010
7816358 Pharmaceutical formulations comprising N,N'-disubstituted piperazine compounds Oct. 19, 2010
7816389 Organic compounds Oct. 19, 2010
7807679 Piperazine derivatives and their use in controlling pests Oct. 5, 2010
7795262 Piperazinyl oxoalkyl tetrahydroisoquinolines and related analogues Sep. 14, 2010
7795284 4,7-dioxobenzothiazole-2-carboxamide derivatives, their preparation and their therapeutic uses Sep. 14, 2010
7795288 Thiazole and pyrazole derivatives as Flt-3 kinase inhibitors Sep. 14, 2010
7786121 Derivatives of hydroxamic acid as metalloproteinase inhibitors Aug. 31, 2010
7781476 Tetracyclic 3-substituted indoles having serotonin receptor affinity Aug. 24, 2010
7776860 Process for the preparation of 3-amino-8-(1-piperazinyl)-2H-1-benzopyran-2-one and salts and solvates thereof Aug. 17, 2010
7772237 Thio-substituted tricyclic and bicyclic aromatic methanesulfinyl derivatives Aug. 10, 2010
7767678 Crystalline forms of 4-[(2,4-dichloro-5-methoxyphenyl)amino]-6-methoxy-7-[3-(4-methyl-1-pipera- zinyl)propoxy]-3-quinolinecarbonitrile and methods of preparing the same Aug. 3, 2010
7763602 Pyrrole derivatives as antimycobacterial compounds Jul. 27, 2010
7763618 Pyridyl derivatives and their use as therapeutic agents Jul. 27, 2010
7758730 Method for improving a piperazine colour stability Jul. 20, 2010
7754722 Piperazine derivatives and methods of use Jul. 13, 2010
7750150 Process for producing acid adduct salt of polyacidic base compound Jul. 6, 2010
7750156 Method of producing aminophenol compounds Jul. 6, 2010
7737139 Sulfonic acids, their derivatives and pharmaceutical compositions containing them Jun. 15, 2010
7731940 Compositions and methods related to serotonin 5-HT1A receptors Jun. 8, 2010
7728031 Octahydro-pyrrolo[3,4-b]pyrrole derivatives Jun. 1, 2010
7728131 Amide derivative and medicine Jun. 1, 2010
7723519 Hybrid 2-aminoterailin and aryl-substituted piperazine compounds and their use in altering CNS activity May. 25, 2010
7723338 Crystalline forms of 1-benzoyl-4-[2-[4,7-dimethoxy-1-[(phosphonooxy)methyl]-1H-pyrrolo[2,3-C]p- yridin-3-yl]-1,2-dioxoethyl]-piperazine May. 25, 2010
7718802 Substituted melanocortin receptor-specific piperazine compounds May. 18, 2010
7718657 Certain indanyl urea modulators of the cardiac sarcomere May. 18, 2010

1 2 3 4 5 6 7 8 9 10 11










 
 
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