专利号:US-12037623-B2 优先权日:2018-07-09 标 题 :Enzymatic synthesis of 4′-ethynyl nucleoside analogs 发明人:HUFFMAN MARK A; FRYSZKOWSKA ANNA; KOLEV JOSHUA N; DEVINE PAUL N; CAMPOS KEVIN R; TRUPPO MATTHEW; NAWRAT CHRISTOPHER C 权利人:MERCK SHARP & DOHME; MERCK SHARP & DOHME LLC 摘要:The present invention relates to an enzymatic synthesis of 4′-ethynyl-2′-deoxy nucleosides and analogs thereof, for example EFdA, that eliminates the use of protecting groups on the intermediates, improves the stereoselectivity of glycosylation and reduces the number of process steps needed to make said compounds. It also relates to the novel intermediates employed in the process.
专利号:US-2024301460-A1 优先权日:2018-07-09 标题 :Enzymatic synthesis of 4'-ethynyl nucleoside analogs
专利号:US-4379928-A 优先权日:1981-03-04 标 题 :Synthesis of amides 发明人:THEODOROPULOS SPYROS 权利人:UNION CARBIDE CORP 摘要:Alkyl amides have been synthesized from cyclic anhydrides, carboxyl acids and their esters by contacting them with an amine carbamic acid salt.
专利号:EP-0062161-B1 优先权日:1981-03-04 标 题:Synthesis of amides using carbamic-acid salts
专利号:CN-103420864-B 优先权日:2013-08-29 标 题:Synthesis of N-substituted acrylamide by amine oxide cracking and elimination method and its method
专利号:CN-103420864-A 优先权日:2013-08-29 标 题 :Synthesis of N-substituted acrylamide by amine oxide cracking and elimination method and its method