专利号:US-8138330-B2 优先权日:2006-09-11 标 题 :Process for the synthesis of oligonucleotides 发明人:LEUCK MICHAEL; WOLTER ANDREAS; STUMPE ALFRED 权利人:LEUCK MICHAEL; WOLTER ANDREAS; STUMPE ALFRED; SIGMA ALDRICH CO LLC 摘要:The present invention discloses novel methods for the synthesis of oligonucleotides with nucleoside phosphoramidites on solid supports. The methods comprise the stepwise chain assembly of oligonucleotides on supports with 5′-acyl phosphoramidites. The synthesis cycles consist of a front end deprotection step which is conducted with a solution of a primary amine or a phenolate, a phosphoramidite coupling step with a 5′-acyl nucleoside phosphoramidite in the presence of an activator, a phosphite oxidation step and an optional capping step. The novel methods improve the quality of synthetic oligonucleotides due to the irreversibility of the front end deprotection step, which prevents the formation of deletion sequences, and due to the avoidance of acidic reagents in the synthesis cycles, which prevent the formation of depurination side products. The invention further discloses novel nucleoside phosphoramidite compositions wherein the phosphoramidites carry acyl front end protective groups which are cleavable with primary amines or phenolates. The invention is applicable to the synthesis of oligodeoxyribonucleotides, oligoribonucleotides and oligonucleotides with modifications in their sugar or phosphate groups.
专利号:US-7943594-B2 优先权日:2002-07-10 标 题 :Solid-phase and solution-phase synthesis of glycosylphosphatidylinositol glycans 发明人:SEEBERGER PETER H; HEWITT MICHAEL C; SNYDER DANIEL A 权利人:MASSACHUSETTS INST TECHNOLOGY 摘要:One aspect of the present invention relates to solution-phase approaches to GPI synthesis. Another aspect of the present invention relates to key building blocks, and syntheses thereof, useful for GPI assembly. Yet another aspect of the invention relates to an automated method for the synthesis of GPIs and fragments thereof.
专利号:WO-9961509-B1 优先权日:1998-05-21 标题:Synthesis of semi-crystalline polyphthalamides through reactive extrusion of hexamethylene terephthalamide oligomer with lower melting, semi-crystalline or amorphous polyamides 发明人:LEBOEUF CHRISTIAN; HARBOURNE DAVID ALAN 权利人:LEBOEUF CHRISTIAN; HARBOURNE DAVID ALAN 摘要:This invention relates to the synthesis of semi-crystalline polyphthalamides (i.e. containing monomeric units of terephthalic acid and hexamethylene diamine) through reactive extrusion of hexamethylene terephthalamide oligomer, or the oligomer of another 6T-rich copolymer, with lower melting semi-crystalline or amorphous polyamides. This process is particularly useful since it is centered around the use of stirred autoclaves for the synthesis of the 6T oligomer and the semi-crystalline or amorphous polyamides which are subsequently combined in a twin screw extruder equipped for devolatilization of water of reaction. It can also be used for the modification of existing semi-crystalline or amorphous polyamides (not necessarily phthalamides) with low levels of 6T.
专利号:US-2024024489-A1 优先权日:2020-11-20 标 题:Protected disaccharides, their process of preparation and their use in the synthesis of zwitterionic oligosaccharides, and conjugates thereof 发明人:MULARD LAURENCE; DHARA DEBASHIS; PFISTER HELENE; PAOLETTI JULIE; PHALIPON ARMELLE; GUERREIRO-INVERNO CATHERINE 权利人:PASTEUR INSTITUT 摘要:The present invention provides zwitterionic oligosaccharides, in particular fragments of the surface polysaccharides from Shigella sonnei and Shigella sonnei conjugates comprising them. The present invention also provides protected disaccharides, their process of preparation and their use in the synthesis of zwitterionic oligosaccharides, and conjugates thereof, the disaccharide repeating unit of Shigella sonnei being: (I)
专利号:EP-2586773-A1 优先权日:2011-10-27 标题 :Synthesis of Triazolopyrimidine Compounds 权利人:LEK PHARMACEUTICALS 摘要:The present invention relates to the field of organic synthesis and describes the synthesis of specific triazolopyrimidine compounds and intermediates thereof as well as related derivatives.
专利号:US-7491520-B2 优先权日:2004-01-19 标题 :Biochemical synthesis of 6-amino caproic acid 发明人:RAEMAKERS-FRANKEN PETRONELLA C; NOSSIN PETRUS M M; BRANDTS PAUL M; WUBBOLTS MARCEL G; PEETERS WIJNAND P H; ERNSTE SANDRA; WILDEMAN DE STEFAAN M A; SCHUERMANN MARTIN 权利人:DSM IP ASSETS BV 摘要:The invention relates to biochemical synthesis of 6-amino caproic acid from 6-aminohex-2-enoic acid compound or from 6-amino-2-hydroxyhexanoic acid, by treatment with an enzyme having α,β-enoate reductase activity towards molecules containing an α,β-enoate group and a primary amino group. The invention also relates to processes for obtaining suitable genetically engineered cells for being used in such biotransformation process, and to precursor fermentation of 6-amino caproic acid from intermediates leading to 6-amino caproic acid. Finally, the invention relates to certain novel biochemically produced compounds, namely 6-aminohex-2-enoic acid, 6-aminohexanoic acid, as well as to caprolactam produced therefrom and to nylon-6 and other derivatives produced from such biochemically produced compounds or caprolactam.
参考文献:10.1104/pp.109.148742 摘要:Hosein FN, Bandyopadhyay A, Peer WA, Murphy AS. The catalytic and protein-protein interaction domains are required for APM1 function. Plant Physiol. 2010 Apr;152(4):2158–72.