Plural hetero rings

Subclass of:

549 - Organic compounds -- part of the class 532-570 series

549000000 - ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1)

549000000 - 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)

549200000 - Oxygen containing hetero ring (e.g., dioxirane, etc.)

549429000 - The hetero ring is five-membered

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application number	Description	Number of patent applications / Date published
549472000	Plural hetero rings	12
20120209013	OLIGO- AND POLYFURANS, PREPARATION AND USES THEREOF - This invention is directed to oligofurans, process of preparation and uses thereof.	08-16-2012
20140179934	OLIGO- AND POLYFURANS, PREPARATION AND USES THEREOF - This invention is directed to oligofurans, process of preparation and uses thereof.	06-26-2014
20160115143	METHODS FOR PRODUCING FUELS, GASOLINE ADDITIVES, AND LUBRICANTS - The present disclosure generally relates to the production of fuels, gasoline additives, and/or lubricants, and precursors thereof. The compounds used to produce the fuels, gasoline additives, and/or lubricants, and precursors thereof may be derived from biomass. The fuels, gasoline additives, and/or lubricants, and precursors thereof may be produced by a combination of intermolecular and/or intramolecular aldol condensation reactions, Guerbet reactions, hydrogenation reactions, and/or oligomerization reactions.	04-28-2016
549473000	Acyclic -C(=X)-, wherein X is chalcogen, attached directly or indirectly to the hetero ring by nonionic bonding	9
20090143602	ESTERS OF 5-HYDROXYMETHYLFURFURAL AND METHODS FOR THEIR PREPARATION - Disclosed are compositions and methods for the production of mono-esters and di-esters from the reaction of HMF and a reactant selected from a diacid or a diacid derivative; typical reactants are PAN, phthaloyl dichloride, dimethyl phthalate, maleic acid, and maleic anhydride or mono-esters that can be prepared from HMF and MAN.	06-04-2009
20110040109	METHOD OF CARBON CHAIN EXTENSION USING NOVEL ALDOL REACTION - Method of producing C	02-17-2011
20110040110	METHOD OF CARBON CHAIN EXTENSION USING NOVEL ALDOL REACTION - Method of producing C	02-17-2011
20120289718	COMPOUNDS USEFUL IN THE SYNTHESIS OF HALICHONDRIN B ANALOGS - In general, the invention features compounds useful for the synthesis of analogs of halichondrin B, such as eribulin or pharmaceutically acceptable salts thereof, e.g., eribulin mesylate. Exemplary compounds are of formula (I), (II), or (III):	11-15-2012
20120289719	Method Of Carbon Chain Extension Using Novel Aldol Reaction - Method of producing C	11-15-2012
20120289720	Method Of Carbon Chain Extension Using Novel Aldol Reaction - Method of producing C	11-15-2012
20130190516	ESTERS OF 5-HYDROXYMETHYLFURFURAL AND METHODS FOR THEIR PREPARATION - Disclosed are compositions and methods for the production of mono-esters and di-esters from the reaction of HMF and a reactant selected from a diacid or a diacid derivative; typical reactants are PAN, phthaloyl dichloride, dimethyl phthalate, maleic acid, and maleic anhydride or mono-esters that can be prepared from HMF and MAN.	07-25-2013
20140256963	PROCESS FOR THE PREPARATION OF ALISKIREN - The present invention provides a novel process and novel intermediates useful in the synthesis of pharmaceutically active compounds, especially renin inhibitors, such as Aliskiren, or a salt thereof, preferably Aliskiren hemifumarate.	09-11-2014
20140316148	Renewable Surfactants Derived from Sugar Alcohols - Polyol ether compounds and processes for their preparation. A representative process comprises melting a polyol, and reacting the molten polyol, a carbonyl compound, and hydrogen in the presence of a hydrogenation catalyst to provide the poly of ether. The polyol ether has surfactant properties.	10-23-2014