Chemical Development of an α2δ Ligand, (3S,5R)-3-(Aminomethyl)-5-methyloctanoic Acid
摘要:
Three synthetic approaches, suitable for the large scale manufacture of the alpha 2 delta-ligand, (3S,5R)-3-(aminomethyl)-5-methyloctanoic acid 3, have been evaluated. The selected seven step manufacturing process has then been optimized and used to deliver over 20 kg of API; salient features of the synthesis include the use of 4,4,4-trimethoxybutyronitrile as an efficient four carbon amino acid equivalent. Highly selective kinetic resolution of the C3 stereocente was accomplished via diastereoselective hydrolysis of a cyanoester intermediate using Amano Lipase PS-SD. Extensive process optimisation of the route starting from (R)-2-methylpentanol, led to significant improvements through telescoping, with less than 62 kg of solvent being needed to produce 1 kg of API.
Chemical Development of an α2δ Ligand, (3S,5R)-3-(Aminomethyl)-5-methyloctanoic Acid
摘要:
Three synthetic approaches, suitable for the large scale manufacture of the alpha 2 delta-ligand, (3S,5R)-3-(aminomethyl)-5-methyloctanoic acid 3, have been evaluated. The selected seven step manufacturing process has then been optimized and used to deliver over 20 kg of API; salient features of the synthesis include the use of 4,4,4-trimethoxybutyronitrile as an efficient four carbon amino acid equivalent. Highly selective kinetic resolution of the C3 stereocente was accomplished via diastereoselective hydrolysis of a cyanoester intermediate using Amano Lipase PS-SD. Extensive process optimisation of the route starting from (R)-2-methylpentanol, led to significant improvements through telescoping, with less than 62 kg of solvent being needed to produce 1 kg of API.
Preparation of gamma-amino acids having affinity for the alpha-2-delta protein
申请人:Evans Claire Margaret
公开号:US20070141684A1
公开(公告)日:2007-06-21
Disclosed are materials and methods for preparing optically active γ-amino acids of Formula 1,
which bind to the alpha-2-delta (α2δ) subunit of a calcium channel.
Preparation of Gamma-Amino Acids Having Affinity for The Alpha-2-Delta Protein
申请人:Evans Margaret Claire
公开号:US20090299093A1
公开(公告)日:2009-12-03
Disclosed are materials and methods for preparing optically active γ-amino acids of Formula 1,
which bind to the alpha-2-delta (α2δ) subunit of a calcium channel.