Process for the preparation of the mesylate salt trihydrate of 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol and intermediates useful therefor
申请人:——
公开号:US20020016466A1
公开(公告)日:2002-02-07
The present invention is directed to a novel process for the preparation of the mesylate trihydrate of the compound of formula (I), (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol:
1
The present invention is further directed to a process for the preparation of a (2S)-(+)-compound of formula (II):
2
wherein R
1
is a protecting group. In addition, the present invention relates to intermediates useful in said processes.
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:US06743921B2
公开(公告)日:2004-06-01
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.
PROCESS FOR THE PREPARATION OF NONRACEMIC SYN-1-(4-HYDROXY-PHENYL)-2-(4-HYDROXY-4-PHENYL.PIPERIDIN-1Yl)-1-PROPANOL COMPOUNDS
申请人:DSM Pharmaceuticals, Inc.
公开号:EP1497245A1
公开(公告)日:2005-01-19
Process for preparing nonracemic chiral alcohols
申请人:DSM N.V.
公开号:US20030181318A1
公开(公告)日:2003-09-25
The present invention provides a catalyst system and a process for the preparation of a nonracemic chiral alcohol by hydrogenation of a ketone using the catalyst system, wherein the catalyst system comprises ruthenium, a nonracemic nonatropisomeric chiral diphosphine ligand, an achiral diamine ligand, and a base.