Patent classifications
C07C69/74
Group 8 transition metal catalysts and method for making same and process for use of same in metathesis reaction
Metal catalyst compounds are disclosed. The catalyst compound are represented by the formula (I-II and VII): wherein M is a Group 8 metal; X is an anionic ligand; L is a neutral two electron donor ligand; K 2 (A-E) is a ditopic or multitopic ligand. Also disclosed is an easy applicable catalyst synthesis and the application in different olefin metathesis processes, e.g. Reaction Injection Molding (RIM), rotational molding, vacuum infusion, vacuum forming, process for conversion of fatty acids and fatty acid esters or mixtures thereof, in -olefins, dicarboxylic acids or dicarboxylic esters, etc.
TREPROSTINIL DERIVATIVE COMPOUNDS AND METHODS OF USING SAME
Compounds represented by formulae I, II, III, and IV including pro-drugs for treprostinil and prostacyclin analogs. Uses include treatment of pulmonary hypertension (PH) or pulmonary arterial hypertension (PAH). The structures of the compounds can be adapted to the particular application for a suitable treatment dosage. Transdermal applications can be used.
TREPROSTINIL DERIVATIVE COMPOUNDS AND METHODS OF USING SAME
Compounds represented by formulae I, II, III, and IV including pro-drugs for treprostinil and prostacyclin analogs. Uses include treatment of pulmonary hypertension (PH) or pulmonary arterial hypertension (PAH). The structures of the compounds can be adapted to the particular application for a suitable treatment dosage. Transdermal applications can be used.
Compounds and the use thereof in metathesis reactions
The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula: ##STR00001## wherein: M is a Group 6 metal atom; X is an oxygen atom, ?NR.sup.5, ?NN(R.sup.5)(R.sup.5) or ?NOR.sup.5, R.sup.5 and R.sup.5 independently being various substituents, such as aryl or heteroaryl, each optionally substituted; n is 0 or 1; R.sup.z is a neutral ligand; R.sup.1 is hydrogen or an organic substituent; R.sup.2 is an aryl or heteroaryl group, each optionally substituted; R.sup.3 is an anionic ligand; and R.sup.4 is an anionic ligand, such as a pyrrolide, a pyrazolide, an imidazolide, an indolide, an azaindolide, or an indazolide, each optionally substituted.
Compounds and the use thereof in metathesis reactions
The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula: ##STR00001## wherein: M is a Group 6 metal atom; X is an oxygen atom, ?NR.sup.5, ?NN(R.sup.5)(R.sup.5) or ?NOR.sup.5, R.sup.5 and R.sup.5 independently being various substituents, such as aryl or heteroaryl, each optionally substituted; n is 0 or 1; R.sup.z is a neutral ligand; R.sup.1 is hydrogen or an organic substituent; R.sup.2 is an aryl or heteroaryl group, each optionally substituted; R.sup.3 is an anionic ligand; and R.sup.4 is an anionic ligand, such as a pyrrolide, a pyrazolide, an imidazolide, an indolide, an azaindolide, or an indazolide, each optionally substituted.
Hydrogenation catalyst, its method of preparation and use
A method of preparing a hydrogenation catalyst, for example, a phthalate hydrogenation catalyst, comprising contacting a silica support having a median pore size of at least about 10 nm with a silylating agent to form an at least partially coated silica support, calcining said coated silica support to form a treated silica support, and depositing a noble metal, preferably ruthenium, on the treated silica support, and optionally contacting the treated silica support with an optional chelating agent to form the hydrogenation catalyst; a hydrogenation catalyst prepared by that method; and a method of hydrogenating unsaturated hydrocarbons, such as phthalates, in which an unsaturated hydrocarbon is contacted with hydrogen gas in the presence of the hydrogenation catalyst of the invention.
Hydrogenation catalyst, its method of preparation and use
A method of producing a hydrogenation catalyst, for example, a phthalate hydrogenation catalyst, comprising contacting a silica support having a medium pore size of at least about 10 nm with an acid to produce a treated silica support, and depositing a noble metal, preferably ruthenium, on the treated silica support to produce a noble metal-containing silica support, and optionally contacting the noble metal-containing silica support with a chelating agent to form the hydrogenation catalyst; a hydrogenation catalyst prepared by that method; and a method of hydrogenating unsaturated hydrocarbons, such as, phthalates, in which an unsaturated hydrocarbon is contacted with hydrogen gas in the presence of the hydrogenation catalyst of the invention.
Method of using of dihydro-resveratrol or its stilbenoid derivatives and/or chemical variants as antimicrobial agents
The present invention relates to a composition for preventing or reducing microbial growth, particularly the growth of dermatophytic fungi, and/or aciduric and acidogenic gram-positive bacteria. More particularly, it relates to the use of trans-3,5,4-trihydroxybibenzyl, also known as dihydro-resveratrol, or its dihydrostilbene derivatives and/or chemical variants as an anti-microbial agent. The present invention further relates to the management of dermatophytosis often caused by dermatophytic fungi and the management of dental caries often mediated by aciduric and acidogenic gram-positive Streptococci. The present invention therefore has applications in preventing, alleviating and/or treating dermatophytosis and dental caries.
TREPROSTINIL DERIVATIVES AND COMPOSITIONS AND USES THEREOF
The present disclosure provides treprostinil derivatives that can act as prodrugs of treprostinil. The treprostinil derivatives can be used to treat any conditions responsive to treatment with treprostinil, including pulmonary hypertension, such as pulmonary arterial hypertension.
TREPROSTINIL DERIVATIVES AND COMPOSITIONS AND USES THEREOF
The present disclosure provides treprostinil derivatives that can act as prodrugs of treprostinil. The treprostinil derivatives can be used to treat any conditions responsive to treatment with treprostinil, including pulmonary hypertension, such as pulmonary arterial hypertension.