Vuf 8334置于氢氧化钾,水体系中,化学反应生成1,4-丁二硫醇 参考文献:Dithiols And Derivatives1 标题:Dithiols And Derivatives1 摘要: Doi:10.1021/jo01119A009
专利信息
专利号:US-9920160-B2 优先权日:2014-09-03 标题 :Method for synthesis of polymer containing multiple epoxy groups 发明人:GAO CHAO; ZHENG YAOCHEN; PENG LI; CAI SHENGYING; WENG ZHULIN 权利人:UNIV ZHEJIANG 摘要:A method for a synthesis of a polymer containing multiple epoxy groups includes steps of: under protection of nitrogen or argon, with a photosensitive free radical initiator under an ultraviolet light irradiation, initiating a mixture of a dithiol compound and alkynyl glycidyl ether or other alkynyl-containing compounds to proceed a thiol-yne polymerization, so as to obtain the polymer. The number of the epoxy groups is able to be adjusted through changing a type of a dithiol monomer, a mixing ratio of the dithiol monomer, and a mixing ratio between the alkynyl glycidyl ether and other alkynyl compounds. The present invention has advantages of: fast reaction, convenient process, easy post-processing, a large number of the epoxy groups, and adjustable and controllable content. The obtained polymer has a wide potential application in fields of coating, adhesive, ink, encapsulating material, resin for composite material, additive, high performance material, function material, and so on.
专利号:US-2025282813-A1 优先权日:2021-04-09 标 题 :Pseudo solid phase protecting group and methods for the synthesis of oligonucleotides and oligonucleotide conjugates 发明人:OKADA YOHEI; SUZUKI HIDEAKI; LUTHER ANATOL 权利人:BACHEM HOLDING AG 摘要:A novel pseudo solid phase protecting group and methods for the synthesis of oligonucleotides and oligonucleotide conjugates are provided. The pseudo solid phase protecting group is represented by formula II wherein: * indicates the point of attachment to an oxygen atom of a hydroxyl moiety of the nucleoside, the nucleotide, the oligonucleotide, or of the conjugate of a nucleoside, a nucleotide or an oligonucleotide to be protected; c is 0 or 1; a is an integer of 1 to 12; R3 is H; R5 is O—R6 or H, where R6 is a C8-C40 aliphatic hydrocarbon group; each of R4 is independently O—R6, where R6 is at each occurrence independently a C8-C40 aliphatic hydrocarbon group; b is 1 to 3; with the proviso that if b is 1, at least one of R3 and R5 is not H; and with the further proviso that the sum of all carbon atoms contained in the R3, R4, and R5 moieties present is larger than 23 and smaller than 200.
专利号:US-7767826-B2 优先权日:2007-10-05 标题 :Process for the synthesis of L-(+)-ergothioneine 发明人:TRAMPOTA MIROSLAV 权利人:PHARMATECH INTERNATIONAL INC 摘要:This invention relates to a novel process for the preparation of optically pure L-(+)-ergothioneine. The process for the chemical synthesis of L-ergothioneine comprises steps which consist of reacting L-histidine alkyl ester with an acid halide, chloroformate or pyrocarbonate in the presence of a base, hydrolysis of the alkyl-(S,Z)-2,4,5-triamidopent-4-enoate to obtain a (S)-alkyl 2,5-diamido-4-oxopentanoate, acid catalyzed hydrolysis of the (S)-alkyl 2,5-diamido-4-oxopentanoate followed by reaction with a metal thiocyanate to obtain the thiohistidine, protection of the sulfur of thiohistidine as the tert-butyl thioether, dialkylation of the primary amine to obtain a tertiary amine, quaternization of the tertiary amine, and removal of the protecting group to obtain the desired (S)-3-(2-mercapto-1H-imidazol-5-yl)-2-(trialkylammonio)propanoate (I). This process affords a better yield and is capable of practical application at large scale.
专利号:US-9267213-B1 优先权日:2005-03-25 标题:Electrochemical deblocking solution for electrochemical oligomer synthesis on an electrode array 发明人:MAURER KARL; COOPER JOHN J 权利人:CUSTOMARRAY INC 摘要:There is disclosed an electrochemical deblocking solution for use on an electrode microarray. There is further disclosed a method for electrochemical synthesis on an electrode array using the electrochemical deblocking solution. The solution and method are for removing acid-labile protecting groups for synthesis of oligonucleotides, peptides, small molecules, or polymers on a microarray of electrodes while substantially improving isolation of deblocking to active electrodes. The method comprises applying a voltage or a current to at least one electrode of an array of electrodes. The array of electrodes is covered by the electrochemical deblocking solution.
专利号:WO-2025082632-A1 优先权日:2023-10-16 标 题:Method and composition for oligonucleotide synthesis 发明人:SAITO MASAHARU 权利人:BACHEM HOLDING AG 摘要:The invention pertains to a method for the synthesis of oligonucleotides using pseudo solid-phase protecting groups, wherein said method comprises a step of subjecting a solution comprising a component (C-0)# to one or more aqueous extractions, wherein the organic phase comprises the component (C-0)#. Said component (C-0)# is a nucleoside or an oligonucleotide, which is covalently bonded to a pseudo solid-phase protecting group and comprises a free backbone hydroxyl group. The aqueous phase of each of said one or more aqueous extractions has a pH-value in the range of 4-7.
专利号:EP-4605403-A1 优先权日:2022-10-17 标 题:Method and composition for oligonucleotide synthesis 发明人:SAITO MASAHARU; TAKEDA KAZUTAKA; OKADA YOHEI; LUTHER ANATOL 权利人:BACHEM HOLDING AG 摘要:The invention pertains to methods for the synthesis of oligonucleotides using pseudo solid-phase protecting groups, wherein said method comprises at least one aqueous extraction carried out in the presence of one or more amide solvents SA, wherein each amide solvent SA is an amide solvent comprising one or more alkyl groups, wherein these one or more alkyl groups together comprise in total 6−24 carbon atoms. The invention further pertains to compositions comprising an oligonucleotide which is covalently bonded to a pseudo solid-phase protecting group and a mixed solvent comprising on or more of the aforementioned amide solvents SA.
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