专利号:US-7301006-B2 优先权日:2002-07-16 标 题 :Methods and materials for the synthesis of modified peptides 发明人:YOUNG TRAVIS G; KIESSLING LAURA L 权利人:WISCONSIN ALUMNI RES FOUND 摘要:Methods and protected amino acids useful as building blocks (protected monomers) for the synthesis of peptides and proteins that are selectively modified at one or more side-chain hydroxyl groups. Azide-bearing protecting groups allow the selective deprotection of side-chain hydroxyl groups of amino acids after synthesis of a peptide. Reaction conditions for removal of the azide-bearing protecting group can be selected which are substantially orthogonal to those that will remove α-amino protecting groups typically employed in peptide synthesis, such that hydroxyl groups protected with the azide-bearing protecting group remain protected during synthesis of the peptide chain. Various protecting groups which are readily available can be used for protecting potentially reactive side chain groups of amino acids in the peptide or protein to be modified. Preferred side-chain protecting groups are chemically distinguishable from the azide-bearing protecting group and substantially orthogonal reaction conditions can be selected such that side-chain protection of other amino acids is maintained when the azide-bearing protecting group is removed. The use of the azide-bearing protecting group of this invention for one or more hydroxy amino acids during peptide synthesis allows the selective unmasking of those azide-protected side-chain hydroxyl groups and selective modification of the hydroxyl groups that are selectively unmasked. The methods and materials herein are particularly used in synthesis of sulfated, phosphorylated and glycosylated peptides and proteins. Kits and methods of synthesizing a modified peptide or protein using the kits are also provided.
专利号:US-12344881-B2 优先权日:2023-09-27 标题 :Genetic engineering bacterium for de novo synthesis of cis,cis-muconic acid by taking glucose as substrate and applications thereof 发明人:TAN TIANWEI; LI MENGLEI 权利人:UNIV BEIJING CHEM TECH 摘要:The present invention discloses a genetic engineering bacterium for de novo synthesis of cis,cis-muconic acid by taking glucose as a substrate and applications thereof, and belongs to the technical field of genetic recombination and metabolic engineering. The genetic engineering bacterium for de novo synthesis of cis,cis-muconic acid (MA) by taking glucose as the substrate disclosed in the present invention is modified with chassis microbes, and includes recombinant Corynebacterium glutamicum for a cis,cis-muconic acid pathway construction module and an intermediate high-yield module. Production capacity of strains is greatly improved; MA of 90.2 g/L is finally obtained in fermentation liquor; and possibilities are provided for green and low-cost production of numerous chemicals such as adipic acid and nylon-66.
专利号:US-4780504-A 优先权日:1985-06-20 标 题 :Supports useful in solid phase synthesis of oligonucleotides 发明人:BUENDIA JEAN; NIERAT JEANINE 权利人:ROUSSEL UCLAF 摘要:Novel supports useful in solid phase synthesis of oligonucleotides of the formula I +TR wherein &cir& is micro pellets of a material selected from the group consisting of glass, silica, Kieselguhr, polytetrafluoroethylene, cellulose and metallic oxides, m is an integer from 1 to 20, A is selected from the group consisting of alkylene of 1 to 20 carbon atoms, saturated cycloalkylene of 3 to 12 carbon atoms, phenyl and 5 to 6 member heterocycles, x is an integer from 0 to 20, x1 is an integer from 0 to 10 and the amino group may be in the m-, p- or o-position, a process for the preparation of said supports, the use of said supports and intermediates.
专利号:US-5030777-A 优先权日:1989-10-31 标 题 :Synthesis of 3,5-dichloroalkylbenzene and recovery of 1,3-dichlorobenzene 发明人:GEORGE JACOB; DESAI KANTI B; PERESS JIMMY 权利人:STANDARD CHLORINE OF DELAWARE 摘要:A process for synthesizing 3,5-dichloroalkylbenzene and recovering 1,3-dichlorobenzene from a starting mixture of 1,3- and 1,4-dichlorobenzenes. The process includes the sequential steps of selectively alkylating the 1,3-dichlorobenzene in the starting mixture; isomerizing a portion of the 2,4-dichloroalkylbenzene produced to 3,5-dichloroalkylbenzene; separating the 1,4-dichlorobenzene from the isomeric mixture of dichlorocumenes; and selectively transalkylating the dichlorocumenes to yield alkylbenzene, 3,5-dichloroalkylbenzene and 1,3-dichlorobenzene. By selectively alkylating only a portion of the 1,3-dichlorobenzene, the reaction products are obtained in good yield and substantially free of undesirable by-products.
专利号:US-9580323-B2 优先权日:2013-05-31 标题 :Method of producing graphene and other carbon materials 发明人:MUKASYAN ALEXANDER; MANUKYAN KHACHATUR 权利人:MUKASYAN ALEXANDER; MANUKYAN KHACHATUR; UNIV NOTRE DAME DU LAC 摘要:The invention provides methods for the combustion synthesis (CS) of graphene by a novel exothermic self-sustained reaction between a refractory ceramic compound and a carbon-containing polymer under an inert gas atmosphere. The synthesis of graphene was confirmed by both transmission electron microscopy and Raman spectroscopy. The graphene produced has very low (<1 wt. %) oxygen content. Fluorocarbon gases released due to decomposition of the carbon-containing polymer in the combustion wave can reduce the ceramic to a gas and mesoporous carbon particles and graphene layers. The method does not require an external energy source because it occurs in a self-sustained synergetic manner after ignition. The methods are flexible in terms of tuning the synthesis conditions for desired products, and the method can be scaled to provide kilogram quantities.
专利号:US-5306562-A 优先权日:1990-08-31 标 题 :Xanthenylamide handle for use in peptide synthesis 发明人:BARANY GEORGE 权利人:UNIV MINNESOTA 摘要:The preparation and properties of xanthenylamide handles for use in peptide synthesis is disclosed. The compounds, omega-(9-(9-fluorenylmethyloxycarbonyl)aminoxanthan-2-oxy)alkanoic acid derivatives, are used as peptide handles in the solid-phase synthesis of peptide amides.
摘要:Journal of Environmental Pathology and Toxicology., 4(5-6)(183), 1980 摘要:Kuntz KW; Toxic Contaminants in the Niagara River, 1975-1982. Environment Canada Tech Bull No.134 (1984) 摘要:Beck U, Loser E; Chlorinated Benzenes and other Nucleus-Chlorinated Aromatic Hydrocarbons. Ullmann's Encyclopedia of Industrial Chemistry 7th ed. (1999-2013). New York, NY: John Wiley & Sons; Online Posting Date: 15 Oct 2011 摘要:USEPA/Office of Water; Federal-State Toxicology and Risk Analysis Committee (FSTRAC). Summary of State and Federal Drinking Water Standards and Guidelines (11/93) To Present 摘要:Mackison, F. W., R. S. Stricoff, and L. J. Partridge, Jr. (eds.). NIOSH/OSHA - Occupational Health Guidelines for Chemical Hazards. DHHS(NIOSH) Publication No. 81-123 (3 VOLS). Washington, DC: U.S. Government Printing Office, Jan. 1981., p. 1