147 results about "Amino derivatives" patented technology

The present invention relates to medicine and veterinary, namely, to immunology, and to methods aimed at correcting the immune system of a living organism. The essence of the invention is in the immunocorrection of the organism using pharmacologically appropriate amino derivatives of 2,3-dihydrophthalazine-1,4~dione in their effective doses ranging from 0.2 mug to 1,000 mg.

The present invention relates to an amino-functional polysiloxane of formula (1) where each R¹ is independently selected from alkyl or aryl radicals, each R² is independently selected from hydrogen, alkyl or aryl radicals, n is selected so that the molecular weight for the functional polysiloxane is in the range of from 400 to 10,000 and R³ is a bivalent radical or —O—R³—NH—R⁵ is hydroxy or alkoxy, and R⁵ is selected from hydrogen, aminoalkyl, aminoalkenyl, aminoaryl, aminocycloalkyl radical, optionally substituted by alkyl, aryl, cycloalkyl, halogen, hydroxy, alkoxy, thioalkyl, amino, amino derivatives, amido, amidoxy, nitro, cyano, keto, acyl derivatives, acyloxy derivatives, carboxy, ester, ether, esteroxy, heterocycle, alkenyl or alkynyl and where 0 to 90% of —O—R³—NH—R⁵ is hydroxy or alkoxy. The present invention further relates to an epoxy-polysiloxane composition which includes an aminopolysiloxane hardener component or an amino-functional polysiloxane hardener component of formula (1), having active hydrogens able to react with epoxy groups in an epoxy resin to form epoxy polymers, and able to react with a polysiloxane to form polysiloxane polymers, wherein the epoxy chain polymers and polysiloxane polymers polymerize to form a cured epoxy-polysiloxane polymer composition.

The invention discloses fullerene multi-nitrogen heterocyclic water-soluble derivatives as well as a preparation method and an application thereof. The fullerene multi-nitrogen heterocyclic water-soluble derivatives are fullerene imino derivatives which prepared from fullerene C2n and nitrine organic compound by a cycloaddition reaction. The structural formula of the derivatives is C2n[N(CH2)mCH2NH2]x or C2n[N(CH2)m-1CH2COOM]x, wherein n=30-50, m=1-5, x= 8-24, and M is H, NH4, Na or K. The derivatives of the invention have good aqueous phase dissolubility, have perssad-NH2 or -COOH with reactivity at side chain end which are suitable for coupling and bonding various markers or large biological molecules, thereby being applied to nano-biomarkers and detecting techniques.

Citrus canker and brown spot are common diseases of citrus. At present, few drugs are available to prevent and control the two diseases and have certain defects. Amino groups at the 7th positions of fluoroquinolone drugs are linked with an active fragment by means of a connecting structure so as to obtain compounds shown in a formula I or a formula II. Experiments prove that the compounds providedby the invention have effects of preventing and controlling the citrus canker and the brown spot and have very good application prospect.

The invention features a method of attaching a ligand that has a free carboxyl group to a solid support by adding an amino group to the ligand to form a ligand-amino derivative, converting the ligand amino derivative to a ligand sulfhydryl derivative, attaching the ligand sulfhydryl derivative to a protein to form a ligand-linker-protein conjugate, and applying the ligand-linker-protein conjugate to the solid support. The method is particularly useful for immobilizing small molecule ligands having a free carboxyl group, such as cloxicillin, to a lateral-flow test strip, in order to make a detection zone on the test strip that exhibits a clear signal and enhanced sensitivity.

The invention relates to an isoalantolactone amino derivative and application of a salt thereof in preparing an anti-tumor medicament. The isoalantolactone amino derivative has a structure shown as a general formula (I), wherein R1 is the same as or different from R2; R1 or R2 independently represents a hydrogen atom, straight-chain or branched-chain C1 to C6 alkyl, C2 to C6 alkyl or acyl, C1 to C6 alkoxy carbonyl, aryl or heteroaryl; or R1, R2 and a nitrogen atom which connects R1 with R2 jointly form a ternary, quaternary, quintuple, hexahydric or heptabasic ring which contains one or more of C, N, O and S atoms; the salt refers to hydrochloride, hydrobromide, sulfate, phosphate, mesylate, fumarate, succinate, benzoate, acetate, malonate, malate, citrate, tartrate or maleate.

The present invention relates to compounds Formula (I) as inhibitors of AKT activity, which are useful for the treatment of susceptible neoplasms and viral infections.

The invention belongs to the field of chemistry and pharmacy, and particularly relates to clinafloxacin amino derivatives and application thereof. The clinafloxacin amino derivatives are the compounds shown in the formula 1 (R is -SO2R1 or -COR2) or pharmaceutically acceptable salts thereof. The antibacterial activity of the derivatives is close to or superior to that of clinafloxacin, the toxicity of the derivatives is lower than that of clinafloxacin, and the solubility and the stability of the solution of the derivatives are superior to those of clinafloxacin. The derivatives can be used for preparing antibacterial medicines, thereby providing more efficient and safe alternative medicines for clinical treatment of infectious diseases and satisfying the demands for clinical treatment in many aspects.

Amidino derivatives represented by the following general formula (I):

{where X is a group represented by R¹SO₂NR²— (wherein R¹ represents optionally substituted C_6-14 aryl, etc. and R² represents hydrogen atom, etc.), etc., Ar¹ represents 2,6-naphthylene, etc., R³ represents hydrogen atom, etc. and Y represents carboxyphenyl, etc.}

and their pharmacologically acceptable salts or solvates.

The invention discloses a redispersible silver nanowire mixture and a preparation method thereof. The redispersible silver nanowire mixture comprises a silver nanowire and a dispersing agent, wherein the dispersing agent comprises an organic silicon compound, a high molecular compound containing at least one group of ether or carboxyl or amido or carboxyl derivative or amido derivative, and a long chain macromolecule containing at least one group of ether or carboxyl or amido or carboxyl derivative or amido derivative, or a combination thereof. As the surface modification is performed for the silver nanowire, the surface energy of the silver nanowire is prominently reduced to realize the hydrophobic/hydrophilic property, and the agglomeration condition of the silver nanowire in a solution is improved; and the silver nanowire also can be prepared to a state of such solid fixtures as powder or paste, so that the long-time preservation of the silver nanowire is realized, and the silver nanowire can achieve excellent redispersibility in an organic solvent.

The invention belongs to the field of medicinal chemistry, and in particular relates to fluoroquinolone derivatives and an application thereof. The compounds shown in a formula (I) are obtained by structural modification of fluoroquinolone medicines. The compounds provided by the invention can not only treat the infection caused by mycobacterium tuberculosis and common bacteria, but also can has activity inhibition effects on bacterial persister, citrus pathogenic bacteria, nicotinamide N-methyltransferase (NNMT) and interleukin IL-17 PPI; and the compounds have a simple and easy preparation process and mild conditions, a plurality of the compounds with enhanced antibacterial activity, improved water solubility and reduced toxic and side effects are obtained, and the compounds are expectedto reduce the dosage, shorten the treatment cycle and improve patient compliance, thereby providing novel molecular types and research ideas for medicines of tuberculosis and other diseases.

The invention discloses a method for preparing a biodegradable polyurethane material with pH responsiveness. Diisocyanate compounds and amino derivatives of polyhydroxyl compounds or amino derivatives of polyhydroxyl polymers serve as raw materials, and a conventional in-situ reaction method in solution polymerization is adopted to prepare the material in the presence of a catalyst. The invention has the advantages that: the preparation method is simple, is easy to operate and is suitable for industrial production, the raw materials are readily available, and the product efficiency is high; the prepared multi-block polyurethane material has a special characteristic of pH sensitivity, can be assembled into the needed structure and shape, has an alternating block structure and a plurality of reactivity points, is easily subjected to macromolecular modification, and is introduced with functional groups to realize structural and functional diversity. For instance, the material is combined with targeting molecules in the field of medicines to serve as a targeted release carrier material and the like; meanwhile, the material has biodegradability, meets the environmentally-friendly requirement of society, and can be widely applied to the fields of materials science, biology, medical science and the like.

The invention relates to the field of pharmaceutical chemistry and particularly relates to water-soluble limonin-7-amino derivatives (I) and (II) shown in the specification, and a preparation method and medicine application thereof. Pharmacological experiments prove that the compounds disclosed by the invention have the analgesic and anti-inflammatory effects and can be clinically used for relieving pain and inflammatory diseases.

The invention discloses a piperidine amino compound and an application thereof in fighting schizophrenia. Pharmacological experiment results show that the piperidine amino compound related to by the invention has good water solubility, has high affinity with dopamine D<2>, D<3>, 5-HT<1A>, and 5-HT<2A> receptors, and has good selectivity on D<3>/D<2> receptors. In-vivo test results show that a preferable compound has a good anti-schizophrenia effect, is relatively low in acute toxicity, high in safety and good in pharmacokinetic characteristic, and has a development value as a high-efficiency low-toxicity novel anti-schizophrenia new drug. The piperidine amino compounds are compounds represented as a structural general formula (I), or salts of the compounds, or hydrates of the salts.

The invention discloses a naphthylthiourea-modified permethylated beta-cyclodextrin derivative, a preparation method and an application method thereof, the chemical formula of the compound is C73H118N2O34S, and the structure and the schematic diagram are shown as attached figures. The compound is simply prepared by the reaction of an amino derivative of cyclodextrin and naphthalene isothiocyanatewith high yield. The compound has high selectivity and high sensitivity on the recognition of mercury ions due to high sulphophile affinity of mercury. The divalent mercury ions are added in the compound in a water phase, fluorescence can be greatly ascended in a short period of time, the detection limit is 50ppb, the compound is resistant to the addition of other ions, such as, Li<+>, Na<+>, K<+>, Mg<2+>, Ca<2+>, Sr<2+>, Ba<2+>, Ag<+>, Cd<2+>, Ce<2+>, Co<2+>, Cu<2+>, Ni<2+>, Pb<2+>, Sr<2+>, Zn<2+> and the like, and the compound has no obvious change after the addition of other ions. The invention provides a reagent and a method which can rapidly test water solubility of the mercury ions in an environment and a biological body with high selectivity, high sensitivity and fluorescence enhancement and is applicable to the wider pH range of (3-12).

The invention discloses an application of clinafloxacin amino derivatives and medicinal salts thereof in preparing antitubercular medicaments. In the structural general formula of the clinafloxacin amino derivatives, R is -(CH2)nNR<1>R<2>, -CH(CH2CH2XCH3)NH2, 2-pyrrolidyl or -OR3; n is 0 or 1; R1 and R2 are separately hydrogen, methyl, 2-hydroxyethyl, (R)-1-ethyl-2-hydroxyethyl, 2-aminoethyl, 3-(dimethylamino)propyl, hydroxyl, amino, methylamino, methoxyl or thiourea group; X is S or SO2; R3 is methyl or isobutyl; the compounds have certain inhibitory effect on standard sensitive strains, clinically isolated sensitive strains and clinically isolated drug-resistant strains of mycobacterium tuberculosis, the antitubercular activity of a part of compounds is stronger than that of ofloxacin and clinafloxacin and weaker than that of moxifloxacin, thus providing a new research direction for the antitubercular medicaments, and being beneficial to clinical treatment of tuberculosis.

The present invention relates to rifamycin 3-iminomethylenyl (—CH═N—) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (—CH═N—) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.