869856-07-5Relevant articles and documents
Exploiting the Biocatalytic Toolbox for the Asymmetric Synthesis of the Heart-Rate Reducing Agent Ivabradine
Pedragosa-Moreau, Sandrine,Le Flohic, Alexandre,Thienpondt, Vivien,Lefoulon, Fran?ois,Petit, Anne-Marie,Ríos-Lombardía, Nicolás,Morís, Francisco,González-Sabín, Javier
, p. 485 - 493 (2017/02/10)
Several chemoenzymatic routes have been evaluated for the production of the heart-rate reducing agent ivabradine. Lipases and ω-transaminases have been identified as useful biocatalysts for the preparation of key enantiopure precursors. The lipase-catalysed kinetic resolution by alkoxycarbonylation of a racemic primary amine and subsequent chemical reduction of the resulting carbamate provided an N-methylated (S)-amine, one step away from ivabradine. Alternatively, the dynamic kinetic resolution by asymmetric bioamination of an aldehyde precursor enabled, in a four-step sequence, the preparative scale synthesis of enantiopure ivabradine in 50% overall yield. (Figure presented.).
PROCESS FOR THE ENZYMATIC SYNTHESIS OF (7S)-1-(3,4-DIMETHOXYBICYCLO[4.2.0]OCTA-1,3,5-TRIEN-7-YL) N-METHYL METHANAMINE, AND APPLICATION IN THE SYNTHESIS OF IVABRADINE AND SALTS THEREOF
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Paragraph 0088-0091, (2017/04/27)
Synthesizing carbamate (IX) comprises performing an enantioselective enzymatic acylation of racemic form of (3,4-dimethoxy-7-bicyclo[4.2.0]octa-1,3,5-trienyl)methanamine (IV) with a lipase (EC 3.1.1.3 in the international classification of enzymes) by carbonate with 1-15 molar equivalents in organic solvents, aqueous solvents, a mixture of organic solvents and/or mixture of organic and aqueous solvents at a concentration of 5-500 g/l per liter of solvents and their mixtures, a E/S ratio of 10/1 to 1/100 and a temperature of 25-40[deg] C. Synthesizing carbamate of formula (IX) comprises performing an enantioselective enzymatic acylation of racemic form of (3,4-dimethoxy-7-bicyclo[4.2.0]octa-1,3,5-trienyl)methanamine of formula (IV) with a lipase (EC 3.1.1.3 in the international classification of enzymes) by carbonate of formula (R1O-(CO)-OR1) with 1-15 molar equivalents in organic solvents, aqueous solvents, a mixture of organic solvents and/or mixture of organic and aqueous solvents at a concentration of 5-500 g/l per liter of solvents and their mixtures, a E/S ratio of 10/1 to 1/100 and a temperature of 25-40[deg] C. R1 : linear or branched 1-6C-alkyl, allyl or benzyl. An independent claim is included for synthesis of (7S)-1-(3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-triene-7-yl) N-methyl methanamine of formula (I) comprising performing enzymatic acylation of (IV) to obtain (IX), and performing reduction step using a reducing agent consisting of lithium tetrahydridoaluminate and sodium bis(2-methoxyethoxy)aluminum hydride (Red-Al) to obtain (I). ACTIVITY : Cardiant; Vasotropic; Antianginal; Antiarrhythmic. MECHANISM OF ACTION : None given.