专利号:US-7728024-B2 优先权日:2005-07-11 标 题:Metal salts of 2′-(1H-Tetrazol-5yl)-1.1′-biphenyl-4-carboxaldehyde 发明人:SEDELMEIER GOTTFRIED; GRIMLER DOMINIQUE 权利人:NOVARTIS AG 摘要:The invention relates to a method or process for the manufacture of blood pressure lowering agents, such as valsartan, novel intermediates as well as process steps in said synthesis. The method or process leads via the novel intermediate salts of the formula IA, n nor a tautomer thereof, wherein [kat] n+ is a cation and n is 1, 2, 3, 4, 5 or 6.
专利号:CN-115197096-A 优先权日:2021-04-13 标 题 :Synthesis method of valsartan intermediate
专利号:CN-115197096-B 优先权日:2021-04-13 标 题 :Synthesis method of valsartan intermediate
参考标题:Synthesis Of Ortho Substituted Arylboronic Esters By In Situ Trapping Of Unstable Lithio Intermediates 作者:Jesper Kristensen,Morten Lysén,Per Vedsø,Mikael Begtrup |发布日期:2001.5.1 摘要:Using Lithium 2,2,6,6-Tetramethylpiperidide (Ltmp) In Combination With Triisopropylborate (B(Oipr)(3)) Is A Highly Efficient And Experimentally Straightforward Process For The Preparation Of Ortho Substituted Arylboronic Esters. The Mild Reaction Conditions Allow The Presence Of Functionalities Such As Ester Or Cyano Groups Or Halogen Substituents That Are Usually Not Compatible With The Conditions Used