摘要:
A composition for the delivery of a nucleic acid compound is provided which comprises a cationic peptide or polymer and a lipidoid compound. The nucleic acid compound may be any chemically modified or unmodified DNA or RNA. The amount of the lipidoid in the composition is preferably low, relative to the cationic peptide or polymer.
摘要:
The present invention provides a diphenyl-like compound, and intermediate thereof, a preparation method therefor, a pharmaceutical composition thereof and the uses thereof. According to the invention, the diphenyl-like compound has a significant inhibitory effect on PD-1 and/or PD-L1, and can effectively alleviate or treat related diseases such as cancer.
摘要:
Aminoalcohol lipidoids are prepared by reacting an amine with an epoxide-terminated compound are described. Methods of preparing aminoalcohol lipidoids from commercially available starting materials are also provided. Aminoalcohol lipidoids may be prepared from racemic or stereochemically pure epoxides. Aminoalcohol lipidoids or salts forms thereof are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems. Given the amino moiety of these aminoalcohol lipidoid compounds, they are particularly suited for the delivery of polynucleotides. Complexes, micelles, liposomes or particles containing the inventive lipidoids and polynucleotide have been prepared. The inventive lipidoids may also be used in preparing microparticles for drug delivery. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings.
摘要:
Disclosed herein are gemini surfactants, and methods for making and using these gemini surfactants. These gemini surfactants may be incorporated in paints and coatings to provide hydrophilic and/or self-cleaning properties.
摘要:
The present invention provides a Molybdenum or Tungsten chalcogenide nanoobject having: (a) an object size comprised from 0.1 to 500 nm, and (b) from 1 to 99% by weight of molecules of formula (I) with respect to the total weight of the nanoobject, wherein: A is —OH; X is selected from: (C1-C20)alkyl optionally substituted with one or more radicals; a 2 to 20-member heteroalkyl optionally substituted with one or more radicals; and a homopolymer or copolymer comprising a polymeric chain; B is selected from: H, —OH, —NH2, (C1-C4)alkyl, halogen, phenyl substituted with one or more halogen radicals, benzyl substituted with one or more halogen radicals, —C(═O)R3, —C(═O)(R7), —OC(═O)(O)R3, —C(═O)(O−), —C(═O)(O)R3, —OR3, —CH(OR3)(OR4), —C(OR3)(OR4)(R5), —C(OR3)(OR4)(OR5), —C(OR3)(OR4)(OR5)(OR6), —NR1R2, —N+R1R2R3, —C(═NR1)(R2), —C(═O)(NR1R2), —N(C(═O)(R1)) (C(═O)(R2))(R3), —O(CN), —NC(═O), —ONO2, —CN, —NC, —ON(═O), —NO2, —NO, —C5H4N, —SR1, —SSR1, —S(═O)(R1), — S(═O)(═O)(R1), —S(═O)(OH), —S(═O)(═O)(OH), —SCN, —NCS, —C(═S)(R1), —PR1R2, —P(═O)(OH)2, —OP(═O)(OH)2, —OP(═O)(OR1)(OR2), —B(OH), —B(OR1)(OR2), and —B(OR1)(R2); provided that when B is —H or (C1-C4) alkyl, then X is a homopolymer, a copolymer, or a 2 to 20-member heteroalkyl optionally substituted with one or more radicals as defined above.The present invention also provides processes for the preparation of the nanoobjects, their use as additive for reducing the friction coefficient of a material, and compositions comprising thereof. A-X-B (I)
摘要:
A method is described for separating CO2 and/or H2S from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO2. The solution containing the absorbed CO2 can then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO2-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO2 (advantageously at 0.5:1 (approaching 1:1) may be achieved.
摘要:
The inventive subject matter relates to compounds of Formula I, compositions thereof, and processes for making such compounds as further described herein. The inventive compounds and compositions have antimicrobial properties and are useful as environmental disinfectants, topical cleansers such as topical personal care compositions, sanitizers, preservatives, in water treatment, as permanent or erodible coatings for medical devices and appliances, and in therapeutics. Additionally, the compounds of Formula I will serve as synthetic intermediates for making additional novel derivatives of triscationic amphiphile compounds.
摘要:
A method of manufacturing a polyurethane compound comprises mixing together a polyol, a polyisocyanate compound and a catalyst and allowing the mixture to cure to form a polyurethane, and is characterized in that the catalyst is a neutral complex of a metal selected from Ti, Zr, Hf, Al, Fe, Bi or Sn and a multidentate organic ligand having: a) a number of anionic donor sites=x; b) a number of neutral donor sites, capable of forming a co-ordinate bond with the metal, =y; c) where x+y=from 5 to 8; d) x is from 2 to 4; e) the ligand molecule is of a size and conformation to enable each of the anionic donor sites and neutral donor sites to form a bond with the same metal atom.
摘要:
A compound useful as a plant activator for activating an endogenous defense system of a plant to control disease damage is provided. A compound represented by the formula: (R3)NH—(CH2)4—N(R1)—(CH2)3—NH(R2) (one of R1 and R2 represents a linear C6-18 alkanoyl group or alkenoyl group, the other represents hydrogen atom or a protective group of amino group; and R3 represents hydrogen atom or a protective group of amino group).
摘要:
A new class of compounds, namely diamino alcohols, is described, along with a process for their production and their use as rheology modifiers in high solids mineral slurries, such as, kaolin clay slurries.