PROCESS INTERMEDIATES AND METHODS FOR THE PREPARATION OF PROCESS INTERMEDIATES FOR THE SYNTHESIS OF ARGATROBAN MONOHYDRATE
申请人:Stivanello Mariano
公开号:US20140088310A1
公开(公告)日:2014-03-27
Methods are provided for the synthesis of key intermediates for the synthesis of Argatroban monohydrate, ethyl (2R,4R)-1-[(2S)-2-amino-5-[[imino(nitroamino)methyl]amino]-1-oxopentyl]-4-methylpiperidine-2-carboxylate compounded with HCl. Such intermediates are also provided.
[EN] METHOD FOR THE PREPARATION OF PROCESS INTERMEDIATES FOR THE SYNTHESIS OF ARGATROBAN MONOHYDRATE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'INTERMÉDIAIRES DE PROCÉDÉ POUR LA SYNTHÈSE DE L'ARGATROBAN MONOHYDRATE
申请人:LUNDBECK PHARMACEUTICALS ITALY S P A
公开号:WO2012136504A1
公开(公告)日:2012-10-11
Object of the present invention is a method for the synthesis of a key intermediate for the synthesis of Argatroban monohydrate, ethyl (2R,4R)-1-[(2S)-2-amino-5-[[imino(nitroamino)methyl]amino]-1-oxopentyl]-4- methylpiperidine-2-carboxylate compounded with HCl.
A process for the preparation of trans-(2R)-4-substituted-pipecolic acids and esters thereof, and intermediate compounds used therein
申请人:Enantia, S.L.
公开号:EP2305646A1
公开(公告)日:2011-04-06
Process for the preparation of a compound of formula (III) wherein R1 is a (C1-C10)-alkyl radical or a radical of one of the known ring systems with 1-3 rings, the rings being aromatic and being isolated or partially/totally fused and having 5-6 members, being each member independently selected from C, CH, N, NH, O, S; and the ring system being optionally substituted by one or more radicals independently selected from (C1-C6)-alkyl, (C1-C6)-alkoxy, and halogen; the process comprising: a) reacting a (C1-C10)-alkyl lithium, or a lithium salt of the ring system as defined above with a copper salt to obtain an organocuprate compound, and b) reacting the organocuprate compound obtained in step a) with di(tert-butyl) (2R)-3,6-dihydro-6-oxo-1,2(2H)-pyridinedicarboxylate_in an inert solvent system in the presence of a Lewis acid. Intermediate IV is new and is useful as an intermediate for the preparation of pharmaceutically active ingredients such as Argatroban.
[EN] A PROCESS FOR THE PREPARATION OF TRANS-(2R)-4-SUBSTITUTED-PIPECOLIC ACIDS AND ESTERS THEREOF, AND INTERMEDIATE COMPOUNDS USED THEREIN<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES (2R)-PIPÉCOLIQUES TRANS, SUBSTITUÉS EN POSITION 4, ET DE LEURS ESTERS, ET COMPOSÉS INTERMÉDIAIRES UTILISÉS À CET EFFET
申请人:ENANTIA S L
公开号:WO2011039290A1
公开(公告)日:2011-04-07
Process for the preparation of a compound of formula (III) wherein R1 is a (C1- C10)-alkyl radical or a radical of one of the known ring systems with 1 -3 rings, the rings being aromatic and being isolated or partially/totally fused and having 5-6 members, being each member independently selected from C, CH, N, NH, O, S; and the ring system being optionally substituted by one or more radicals independently selected from (C1-C6)-alkyl, (C1-C6)-alkoxy, and halogen; the process comprising: a) reacting a (C1-C10)-alkyl lithium, or a lithium salt of the ring system as defined above with a copper salt to obtain an organocuprate compound, and b) reacting the organocuprate compound obtained in step a) with di(tert-butyl) (2R)-3,6-dihydro-6-oxo-1,2(2H)- pyridinedicarboxylatejn an inert solvent system in the presence of a Lewis acid. Intermediate IV is new and is useful as an intermediate for the preparation of pharmaceutically active ingredients such as Argatroban.
The invention relates to nitrilases and to nucleic acids encoding the nitrilases. In addition methods of designing new nitrilases and method of use thereof are also provided. The nitrilases have increased activity and stability at increased pH and temperature.