Patent classifications
C07C63/04
LIGNIN DEPOLYMERISATION AND DEOXYGENATION PROCESS FOR OBTAINING AROMATIC COMPOUNDS AND THEIR CATALYTIC REACTION COMPOSITION
- Jose Antonio Toledo Antonio ,
- Maria Antonia Cortes Jacome ,
- Isidro MEJIA CENTENO ,
- Jorge Alberto GARCIA MARTINEZ ,
- Jose Escobar Aguilar ,
- Esteban Lopez Salinas ,
- Maria de Lourdes Araceli Mosqueira Mondragon ,
- Miguel Perez Luna ,
- Carlos Angeles Chavez ,
- Jaime Sanchez Valente ,
- Maria de Lourdes Alejandra GUZMAN CASTILLO ,
- Ana Karina MEDINA MENDOZA
The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it I a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm.sup.2. When the reaction is developed into a batch system, oxygenated aromatic hydrocarbons are mainly produced, both by thermal as well as catalytic depolymerisation, whereas in a continuous flow reaction system, deoxygenated aromatic hydrocarbons are produced.
CANNABINOID ANALOGS AND METHODS FOR THEIR PREPARATION
Provided herein are cannabinoid analogs, including halogenated cannabinoid analogs, hydroxylated cannabinoid analogs, deuterated cannabinoid analogs, and tritiated cannabinoid analogs. The cannabinoid analogs can be prepared by partial or total expression in modified host cells, such as recombinantly modified yeast cells, optionally in combination with chemical synthetic steps.
CANNABINOID ANALOGS AND METHODS FOR THEIR PREPARATION
Provided herein are cannabinoid analogs, including halogenated cannabinoid analogs, hydroxylated cannabinoid analogs, deuterated cannabinoid analogs, and tritiated cannabinoid analogs. The cannabinoid analogs can be prepared by partial or total expression in modified host cells, such as recombinantly modified yeast cells, optionally in combination with chemical synthetic steps.
AROMATIC COMPOUNDS AND PHARMACEUTICAL USES THEREOF
The present disclosure relates to compounds of the general formula (I): wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 may be chosen from different substituents; n is 0, 1, or 2; and X is a hydroxymethyl or a carboxylic acid or a derivative thereof, such as a carboxylate, such as a carboxylic ester, a glyceride, an anhydride, a phospholipid, a carboxamide, a phospholipid, or a prodrug thereof; or a pharmaceutically acceptable salt, solvate, solvate of such salt or a prodrug thereof. The present disclosure also relates to pharmaceutical compositions and lipid compositions comprising at least one compound according to the present disclosure, and to such compounds for use as medicaments or for use in therapy, in particular for the treatment of diseases related to metabolic diseases and liver diseases, such as non-alcoholic fatty liver disease and cholestasis diseases.
AROMATIC COMPOUNDS AND PHARMACEUTICAL USES THEREOF
The present disclosure relates to compounds of the general formula (I): wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 may be chosen from different substituents; n is 0, 1, or 2; and X is a hydroxymethyl or a carboxylic acid or a derivative thereof, such as a carboxylate, such as a carboxylic ester, a glyceride, an anhydride, a phospholipid, a carboxamide, a phospholipid, or a prodrug thereof; or a pharmaceutically acceptable salt, solvate, solvate of such salt or a prodrug thereof. The present disclosure also relates to pharmaceutical compositions and lipid compositions comprising at least one compound according to the present disclosure, and to such compounds for use as medicaments or for use in therapy, in particular for the treatment of diseases related to metabolic diseases and liver diseases, such as non-alcoholic fatty liver disease and cholestasis diseases.
Functionalized dimethoxyphenol monomers and methods for preparing such monomers
Dimethoxyphenol-based monomers containing polymerizable functional groups such as [meth]acrylate groups are useful for the preparation of polymers, wherein one or more dimethoxyphenyl moieties are part of side chains pendant to the backbones of the polymers. The polymers thereby obtained may have different, improved properties, such as higher glass transition temperatures, thermal stability and solvent resistance, as compared to polymers based on other types of lignin-derived monomers.
ACID-CATALYZED PHOTOCATALYZED OXIDATION REACTION OF BENZYLIC C-H BONDS OF AROMATIC COMPOUND
Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.
ACID-CATALYZED PHOTOCATALYZED OXIDATION REACTION OF BENZYLIC C-H BONDS OF AROMATIC COMPOUND
Provided is a photo-oxidation reaction of benzylic C—H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.
Lignin depolymerisation and doxygenation process for obtaining aromatic compounds and their catalytic reaction composition
- Jose Antonio Toledo Antonio ,
- Maria Antonia Cortes Jacome ,
- Isidro MEJIA CENTENO ,
- Jorge Alberto GARCIA MARTINEZ ,
- Jose Escobar Aguilar ,
- Esteban Lopez Salinas ,
- Maria de Lourdes Araceli Mosqueira Mondragon ,
- Miguel Perez Luna ,
- Carlos Angeles Chavez ,
- Jaime Sanchez Valente ,
- Maria de Lourdes Alejandra GUZMAN CASTILLO ,
- Ana Karina MEDINA MENDOZA
The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it|a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm.sup.2. When the reaction is developed into a batch system, oxygenated aromatic hydrocarbons are mainly produced, both by thermal as well as catalytic depolymerisation, whereas in a continuous flow reaction system, deoxygenated aromatic hydrocarbons are produced.