Featured patents

CDK Inhibitors
US 08822683 B2, Sept. 2, 2014, Three or more ring hetero atoms in the tricyclo ring system, Jay C. Strum et al. / G1 Therapeutics, Inc. (Chapel Hill, US)
A compound of the structure:…

Process for Preparing [4,6-Bis-Dimethylamino-2-[4-(4-Trifluoromethylbenzoylamino)benzyl]pyrimidin-5-Yl]acetic Acid
US 08859770 B2, Oct. 14, 2014, Carbonyl attached directly or indirectly to the diazine ring by nonionic bonding, Michael Schul et al. / Boehringer Ingelheim International GmbH (Ingelheim am Rhein, DE)
A process for preparing a compound of formula (I)…

Process for Stereoselective Synthesis of 5-Fluoro-1-(2R,5S)-[2-(Hydroxymethyl)-1,3-Oxathiolan-5-Yl]cytosine
US 08748604 B2, June 10, 2014, The nitrogen is bonded directly at 4- or 6-position, Santosh Richhariya et al. / Ranbaxy Laboratories Limited (New Delhi, IN)
A process for the preparation of emtricitabine of Formula I,…

Methods of Synthesis and Purification of Heteroaryl Compounds
US 08686135 B2, April 1, 2014, Tricyclo ring system having the oxazine ring as one of the cyclos, Juan Antonio Gamboa et al. / Signal Pharmaceuticals, LLC (San Diego, US)
A method of preparing a compound having formula (II):…

Spirooxazine Radical Derivatives and Reversible Isomerization Reaction
US 08598340 B2, Dec. 3, 2013, Spiro, Atsumasa Sawada / NEC Corporation (Tokyo, JP)
Spirooxazine-like radical compounds of the following formula (1):…

Process for the Preparation of Valganciclovir Hydrochloride
US 08586738 B2, Nov. 19, 2013, Nitrogen attached directly or indirectly to the purine ring system by nonionic bonding, Mohammed Salman Hashmi et al.
A process for the preparation of valganciclovir hydrochloride of Formula I having…

Derivatives of Erlotinib
US 08575339 B2, Nov. 5, 2013, Bicyclo ring system having the diazine ring as one of the cyclos, Xueheng Cheng
A compound isolated from a non-selective reaction product mixture of erlotinib…

Process for Preparing Substituted and Unsubstituted Diamino Triazine Aromatic Di-Isoimides
US 08586734 B2, Nov. 19, 2013, Additional ring containing, George Elias Zahr / E I du Pont de Nemours and Company (Wilmington, US)
A process comprising forming a reaction mixture by combining in a solvent…

Process for Preparing Methyl {4,6-Diamino-2-[1-(2-Fluorobenzyl)-1H-Pyrazolo[3,4-B]pyridin-3-Yl]pyrimidin-5-Yl}Methylcarbamate and Its Purification for Use as Pharmaceutically Active Compound
US 08492544 B2, July 23, 2013, Additional hetero ring which is unsaturated, Winfried Joentgen et al. / Bayer Intellectual Property GmbH (Monheim Am Rhein, DE)
A process for purifying methyl…

Storage Stable Perfusion Solution for Dihydropteridinones
US 08445675 B2, May 21, 2013, The additional hetero ring is one of the cyclos in a bicyclo ring system, Claus Veit et al. / Boehringer Ingelheim International GmbH (Ingelheim am Rhein, DE)
A Storage stable aqueous infusible or injectable solution containing an active…

Patentorg has 497 documents under Carbon Compounds Containing a Hetero Ring Having Nitrogen as the Only Ring Hetero Atoms Patents.

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