947results about "Functional group formation/introduction" patented technology

Metallotetrapyrrolic compounds having photherapeutic properties useful in photodetection and phototherapy of target issues, particularly porphyrins and azaporphyrins that including gallium in the central pyrrolic core. Also disclosed are methods of using metallotetrapyrrolic compounds for the treatment or detection of cardiovascular disease.

The present invention pertains to a process for the carbonylation of an epoxide by reacting it with carbon monoxide in the presence of a catalyst system containing two components, wherein the first component is a source of one or more metals selected from the group consisting of cobalt, ruthenium and rhodium, and the second component is a coordination complex of a tetrapyrrole compound with one or more of the metals belonging to the group consisting of groups IIIA and IIIB of the periodic system, lanthanides and actinides. The present invention also pertains a process for the preparation of a catalyst system.

The present invention has identified compounds with extended aromatic chromophores that bind the G-quadruplex formed by the folding of single-stranded human telomeric DNA. These compounds have been shown to be effective telomerase inhibitors and are contemplated to be useful in developing cancer treatments. A model of cationic porphyrin interaction with quadruplex DNA by intercalation has been established and in combination with structure activity relations has provided novel porphyrin compounds that exhibit discrimination between binding duplex and quadruplex DNA and show improved activity against telomerase.

This invention provides redox-active molecules attached to polypodal (e.g., bipodal, tripodal, quadrapodal, pentapodal, etc.) tethers that can be used for attachment of the redox-active molecules to a substrate (e.g., an electrode). The tethered redox-active molecules are useful for the fabrication of memory devices.

Reactor membranes for used in oxidation reactions of hydrocarbons involving oxygen comprising a selective oxidation catalyst on a mixed conducting, oxide ion selective ceramic membrane of the composition (Sr1-xCax)1-yAyMn1-zBzO3-delta, whereA is Ba, Pb, Na, K, Y, an element of the lanthanide group or a combination thereof,B is Mg, Al, Ga, In, Sn, an element of the 3d or 4d period or a combination thereof,x is from 0.2 to 0.8,y is from 0 to 0.4,z is from 0 to 0.6, anddelta is a number, dependent on x, y and z, that renders the composition charge neutral.

The present invention provides a metal-organic framework (“MOF”) comprising a plurality of metal clusters and a plurality of multidentate linking ligands. Each metal of the plurality of metal clusters comprises one or more metal ions. Each ligand of the plurality of multidentate linking ligands connects adjacent metal clusters. The present invention also provides a method of forming the metal-organic framework. The method of the invention comprises combining a solution comprising one or metal ions with a multidentate linking ligand having a sufficient number of accessible sites for atomic or molecular adsorption that the surface area of the resulting metal-organic framework is greater than 2,900 m2 / g.

A lateral flow, membrane-based assay device for detecting the presence or quantity of an analyte residing in a test sample is provided. The device utilizes phosphorescence to detect the signals generated by excited phosphorescent labels. The labels may have a long emission lifetime so that background interference from many sources, such as scattered light and autofluorescence, is practically eliminated during detection. In addition, the phosphorescent labels may be encapsulated within particles to shield the labels from quenchers, such as oxygen or water, which might disrupt the phosphorescent signal.

The invention is directed to a catalyst for the epoxidation of an olefin to an olefin oxide, the catalyst comprising a support having at least two pore size distributions, each pore size distribution possessing a different mean pore size and a different pore size of maximum concentration, the catalyst further comprising a catalytically effective amount of silver, a promoting amount of rhenium, and a promoting amount of one or more alkali metals, wherein the at least two pore size distributions are within a pore size range of about 0.01 μm to about 50 μm. The invention is also directed to a process for the oxidation of an olefin to an olefin oxide using the above-described catalyst.

Conjugates of porphyrin, chlorophyll and bacteriochlorophyll photosensitizers with RGD-containing peptides or RGD peptidomimetics are provided that are useful for photodynamic therapy (PDT), particularly vascular-targeted PDT (VTP), of tumors and nonneoplastic vascular diseases such as age-related macular degeneration, and for diagnosis of tumors by different techniques.

This invention relates to methods, compositions, and apparatuses for producing macrocyclic compounds. First, one or more reactants are provided in a reaction medium, which are capable of forming the macrocyclic compound through a desired reaction pathway that includes at least cyclization, and which are further capable of forming undesired oligomers through a undesired reaction pathway that includes undesirable oligomerization. Oligomerization of such reactions in the reaction medium is modulated to reduce formation of undesired oligomers and / or to reduce separation of the undesired oligomers from the reaction medium, relative to a corresponding unmodulated oligomerization reaction, thereby maximizing yields of the macrocyclic compound. The macrocyclic compound so formed is then recovered from the reaction medium. Preferably, the macrocyclic compound spontaneously separates from the reaction medium via phase separation. More preferably, the macrocyclic compound spontaneous precipitates from the reaction medium and therefore can be easily recovered by simple filtration.

Disclosed herein is novel highly stable, crystalline porphyrin containing covalent organic frameworks and their synthesis using Schiff base reaction which are hydrophobic in nature having good selectivity towards alcohol uptake at low pressure over water. Particularly, present invention provides novel highly stable, porous covalent organic frameworks (COFs) comprising porphyrin linked hydroxyl aromatic compound by intramolecular O—H—N═C bonding; wherein porphyrin is tetra(p-amino-phenyl)porphyrin (Tph) and hydroxyl aromatic compound is selected from group consisting of Triformylphloroglucinol (Tp), 2,5-dihydroxyterephthalaldehyde (Da).

A series of novel positively-charged porphyrins is disclosed which exhibit a markedly increased efficiency in photosensitizing both Gram-positive and Gram-negative bacteria to the action of visible light, causing death to such bacteria when present at much lower concentrations and much shorter irradiation times than those porphyrins taught in the prior art. These porphyrins are characterized by the presence of up to four positive charges in the peripheral substituents and at least one hydrophobic tail comprising between 6 and 22 carbons inclusive, originating at one or more of the charged sites.

A broad class of photosensitive compounds having enhanced in vivo target tissue selectivity and versatility in photodynamic therapy. Many furocoumarin compounds, such as psoralens, exhibit cytostatic activity when photoactivated but exhibit little in vivo specificity for selectively accumulating in any particular target tissue such as atheromatous plaques. Reactive Oxygen Producing Photosensitizers ("ROPPs") are photoactivatable compounds having an affinity for hyperproliferating cells (such as atheromatous plaque cells), which when photoactivated, produce cytotoxic reaction products. The photoactivity of a ROPP, such as a porphyrin, may be reduced by metalating the porphyrin while the selective affinity of the metalized ROPP for hyperproliferating tissue remains substantially unchanged. By linking a furocoumarin compound to a ROPP to form a F-ROPP, the cytostatic properties of the furocoumarin portion of the F-ROPP can be exploited while the selective affinity of the ROPP portion of the compound for hyperproliferating cells such as atheromatous plaque provides enhanced tissue selectivity without cytotoxicity. In vivo, certain F-ROPPs may be forced to selectively accumulate in a target tissue by illuminating only the target tissue with light having a wavelength operable for photoactivating the F portion of the F-ROPP thereby causing the F-ROPP to either form a monoadduct with or crosslink the cellular DNA in the target tissue. Light of a second wavelength can then be delivered to the target tissue to photoactivate the ROPP portion causing further interference with cellular activity.

This invention relates to photosensitizer dyes for dye-sensitized solar cells. The photosensitizer dyes are porphyrin-based zinc complexes represented by the following general formulae (100) and (200).wherein A is represented by one of the following formulae (111)˜(118),wherein Z1˜Z10 independently represent a hydrogen atom (H), lithium (Li), sodium (Na), or tetra-alkyl ammonium group (as represented by the following general formula (120)),wherein X1˜X4 independently represent CmH2m+1 (m=1˜6), and B, C, D, and E independently represent one of the following formulae (131)˜(140),wherein Ra˜Rz are independently selected from the group consisting of H, CmH2m+1 (m=1˜15), OCpH2p+1 (p=1˜15), CH2[OC2H4]nOCH3 (n=1˜30), and [OC2H4]qOCH3 (q=1˜30).

The present invention relates to reducible porous crystalline solids, constituted of a metal-organic framework (MOF), for the separation of mixtures of molecules having different unsaturation degrees and / or a different number of unsaturations with a selectivity that can be adjusted by controlling the reduction of the MOF.The MOF solids of the present invention, after reduction, have a strong affinity for molecules containing at least one unsaturation. They can be used in various separation processes, especially those relating to hydrocarbons.

The present invention provides methods of making porphyrins and related compounds such as chlorins by condensing suitable starting materials (e.g., a dipyrromethane-dicarbinol plus dipyrromethane) in a polar solvent in the presence of a Lewis acid. The reactions are preferably carried out in a manner that minimizes rearrangement of the reaction product.

There is provided an aqueous formulation comprising an IR-absorbing naphthalocyanine dye of formula (II):or a salt form thereof, wherein:M is Ga(A1);A1 is an axial ligand selected from —OH, halogen, —OR3, —OC(O)R4 or —O(CH2CH2O)eRe wherein e is an integer from 2 to 10 and Re is H, C1-8 alkyl or C(O)C1-8 alkyl;R1 and R2 may be the same or different and are selected from hydrogen or C1-12 alkoxy;R3 is selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl or Si(Rx)(Ry)(Rz);R4 is selected from C1-12 alkyl, C5-12 aryl or C5-12 arylalkyl; andRx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy;The formulation has a pH in the range of 3.5 to 7 and is particularly suitable for use as an IR-absorbing inkjet ink, providing compatibility with known CMYK inks together with an optimally red-shifted λmax.

A process for producing a metalloporphyrin containing a transition metal inserted into the porphyrin ring which comprises dissolving a porphyrin compound and a transition metal salt each in an independent solvent, combining the solutions, and carrying out the reaction in the presence of a basic substance. By this process a metalloporphyrin containing a transition metal inserted into the porphyrin ring can be synthesized easily under mild conditions and with high selectivity.

The present invention provides methods, compounds, and compositions for the synthesis of light harvesting arrays, such arrays comprising: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:X1Xm+1)m  (I)wherein m is at least 1; X1 is a charge separation group, and X2 through Xm+1 are chromophores. At least one of X2 through Xm+1 has at least one perylene group coupled thereto.

A method of producing a metalloprotein inhibitor, the method comprising generating antibodies directed at a composition including a metal ion-bound chelator, wherein the composition is selected having structural and electronic properties similar to a functional domain of the metalloprotein, thereby producing the metalloprotein inhibitor.

The present invention relates to a cyan dye mixture, an ink composition containing the mixture and a method of ink-jet recording with the ink composition. The print obtained by the method is characterized by discoloring or fading little even when allowed to stand in a well ventilated shade or in an ozone gas. The cyan dye mixture comprises compounds which are obtained by chlorosulfonating, as a starting material, copper phthalocyanine or a sulfonated copper phthalocyanine and then aminating the chlorosulfonation product with an aminating agent used in an amount of at least 2.5 mol per mol of the starting material, and which are represented by the following formula (1): wherein M represents a proton, alkali metal ion, alkaline earth metal ion, onium ion of an organic amine, or ammonium ion; m is an integer of 1 to 4; and n is an integer of 0 to 3; provided that m+n is an integer of 1 to 4.

Organic molecules are partially oxidized in that the gas phase on supported and immobilized photocatalysts deposited having a nanostructure. the photocatalysts are semiconductors such as titanium dioxide and are preferentially coated onto a substrate by flame aerosol coating.

Positron emitting compounds and methods of their production are provided. The compounds have the formula: (F)m G (R)n wherein each R is a group comprising at least one carbon, nitrogen, phosphorus or sulfur atom and G is joined to R through said carbon, nitrogen, phosphorus or sulfur atom; G is silicon or boron; m is 2 to 5 and n is 1 to 3 with m+n=3 to 6 when G is silicon; m is 1 to 3 and n is 1 to 3 with m+n=3 to 4 when G is boron; and wherein the compound further comprises one or more counterions when the above formula is charged; and wherein at least one F is 18 F.

This invention provides a novel class of substituted macrocyclic porphyrin compounds. The compounds are useful as peroxynitrite decomposition catalysts. Pharmaceutical compositions, and methods of making and using the compounds, or a pharmaceutically acceptable salt, hydrate, or prodrug thereof are also described.