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.) > Six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) > 1,4-oxazines > Morpholines (i.e., fully hydrogenated 1,4-oxazines > Additional nitrogen containing hetero ring (e.g., thiazetidine, etc.) > Diazine ring > The diazine ring is one of the cyclos in a polycyclo ring system > Patents

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Class Information
Number: 544/115
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.) > Six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) > 1,4-oxazines > Morpholines (i.e., fully hydrogenated 1,4-oxazines > Additional nitrogen containing hetero ring (e.g., thiazetidine, etc.) > Diazine ring > The diazine ring is one of the cyclos in a polycyclo ring system
Description: Compounds in which the additional six-membered hetero ring is one of the cyclos of a polycyclo ring system.

Sub-classes under this class:

Class Number	Class Name	Patents
544/116	The diazine ring is one of the cyclos in a bicyclo ring system	238

Patents under this class:

1 2 3 4 5

Patent Number	Title Of Patent	Date Issued
7569567	3-Heteroaryl-3,5-dihydro-4-oxo-4H-pyridazino[4,5-B]indole-1-carboxamide derivatives, their preparation and therapeutic use	Aug. 4, 2009
7566713	Immuno inhibitory heterocyclic compounds	Jul. 28, 2009
7268138	Compounds, methods and pharmaceutical compositions for inhibiting PARP	Sep. 11, 2007
7235554	3-heteroaryl-3,5-dihydro-4-oxo-4H-pyridazino[4,5-b] indole-1-acetamide derivatives, preparation and use thereof in medicaments	Jun. 26, 2007
7223756	Quinazoline compounds with therapeutic use	May. 29, 2007
7223758	Pyridazine derivative, pharmaceutical composition thereof, its pharmaceutical use, and process for its preparation	May. 29, 2007
7217714	CCR5 modulators	May. 15, 2007
7109195	Hexacyclic compounds and their therapeutic use	Sep. 19, 2006
7109194	3-heteroaryl-3, 5-dihydro-4-oxo-4H-pyridazino[4, 5-b]indole-1-carboxamide derivatives their preparations and therapeutic use	Sep. 19, 2006
7067655	Adenosine A2a receptor antagonists	Jun. 27, 2006
7064204	Pharmaceutically active compounds having a tricyclic pyrazolotriazolopyrimidine ring structure and methods of use	Jun. 20, 2006
7037916	Pyrimidine derivatives as IL-8 receptor antagonists	May. 2, 2006
7034016	8-phenyl-6,9-dihydro-[1,2,4]triazolo[3,4-i]purin-5-one derivatives	Apr. 25, 2006
7005430	Fused purine derivatives	Feb. 28, 2006
6977255	Therapeutic morpholino-substituted compounds	Dec. 20, 2005
6964960	Indoloquinazolinones	Nov. 15, 2005
6946461	Imidazolophthalazine derivatives as ligands for GABAA receptors	Sep. 20, 2005
6933294	Thiophene-based tricyclic compounds and pharmaceutical compositions comprising same	Aug. 23, 2005
6916811	Adenosine A2a receptor antagonists	Jul. 12, 2005
6825194	Hexacyclic compounds	Nov. 30, 2004
6765006	Substituted quinazolines and analogs and the use thereof	Jul. 20, 2004
6750214	Quinoline and quinazoline compounds useful in therapy	Jun. 15, 2004
6740650	Heterocyclic cytotoxic agents	May. 25, 2004
6730671	Compounds useful as reversible inhibitors of cathespin S	May. 4, 2004
6730681	Triazolo-pyrimidine derivatives as ligands for gaba receptors	May. 4, 2004
6696441	Inhibition of p53-induced stress response	Feb. 24, 2004
6686356	Pyridoquinoxaline antivirals	Feb. 3, 2004
6630475	Adenosine A2a receptor antagonists	Oct. 7, 2003
6624159	Heterocycle carboxamides as antiviral agents	Sep. 23, 2003
6617329	Aminoquinazolines and their use as medicaments	Sep. 9, 2003
6608057	Compounds useful as reversible inhibitors of cathepsin S	Aug. 19, 2003
6608053	Fused heteroaryl derivatives	Aug. 19, 2003
6586429	Tricyclic fused xanthine compounds and their uses	Jul. 1, 2003
6570013	Salts of zopolrestat	May. 27, 2003
6531475	CRF receptor antagonists and methods relating thereto	Mar. 11, 2003
6518265	1H-imidazopyridine derivatives	Feb. 11, 2003
6514982	CRF receptor antagonists and methods relating thereto	Feb. 4, 2003
6495686	Pyrimido [4,5,b]indolizine derivatives and aza analogues thereof; CRF1 specific ligands	Dec. 17, 2002
6482948	Thienopyrimidine compounds and salts thereof and process for the preparation of the same	Nov. 19, 2002
6462036	Tricyclic pyrazole derivatives	Oct. 8, 2002
6451795	4-oxo-3,5-dihydro-4H-pyridazino[4,5-b]indole-1-carboxamide derivatives, preparation and therapeutic use	Sep. 17, 2002
6316438	Fused pyridopyridazine inhibitors of cGMP phosphodiesterase	Nov. 13, 2001
6262045	4-Oxo-3,5-dihydro-4H-pyridazino[4,5-b]-indole-1-acetamide derivatives, their preparation and their application in therapy	Jul. 17, 2001
6255305	Substituted triazolo-pyridazine derivatives as ligands for GABA receptors	Jul. 3, 2001
6156236	Conductive organopolysiloxane composition	Dec. 5, 2000
6133257	Fused polycyclic 2-aminopyrimidine derivatives	Oct. 17, 2000
6127541	Imidazoquinazoline derivatives	Oct. 3, 2000
6124306	Thioalkyl alpha substituted pyrimidine compounds	Sep. 26, 2000
6124287	Imidazo[1,2-a]quinoxalin-4-amines active as adenosine antagonists, process for their preparation and pharmaceutical compositions thereof	Sep. 26, 2000
6057304	Quinoxaline-phosphonic acid derivatives	May. 2, 2000