PROCESSES FOR PREPARING JAK INHIBITORS AND RELATED INTERMEDIATE COMPOUNDS
申请人:Zhou Jiacheng
公开号:US20100190981A1
公开(公告)日:2010-07-29
The present invention is related to processes for preparing chiral substituted pyrazolyl pyrrolo[2,3-d]pyrimidines of Formula III, and related synthetic intermediate compounds. The chiral substituted pyrazolyl pyrrolo[2,3-d]pyrimidines are useful as inhibitors of the Janus Kinase family of protein tyrosine kinases (JAKs) for treatment of inflammatory diseases, myeloproliferative disorders, and other diseases.
Process for the preparation of optically active ethenylphenyl-alcohols
申请人:Lonza AG
公开号:EP1988079A1
公开(公告)日:2008-11-05
Optically active ethenylphenyl-alcohols of formula
or its mirror image,
wherein R1 is unsubstituted or substituted heteroaryl and R2 is phenyl or substituted aryl, are prepared by asymmetric hydrogenation of the corresponding ketones applying hydrogen gas in the presence of specific platinum metal complex catalysts.
Process for the preparation of nonracemic syn-1-(4-hydroxy-phenyl)-2-(4-hydroxy-4-phenyl -piperidin-1-yl)-1-propanol compounds
申请人:DSM CATALYTICA PHARMACEUTICALS, INC.
公开号:US20030144521A1
公开(公告)日:2003-07-31
The present invention provides a process for the preparation of a nonracemic diastereomer of 1-(4-benzoxy-phenyl)-2-(4-hydroxy-4-phenyl-piperidin-1-yl)-1-propanol by hydrogenation of a corresponding nonracemic 1-(4-benzoxy-phenyl)-2-(4-hydroxy-4-phenyl-piperidin-1-yl)-1-propanone using a catalyst system comprising ruthenium, a nonracemic diphosphine ligand, a bidentate amine ligand selected from amino-thioethers and achiral diamines, and a base.