Asymmetric Hydrogenation of α-Primary and Secondary Amino Ketones: Efficient Asymmetric Syntheses of (−)-Arbutamine and (−)-Denopamine
作者:Gao Shang、Duan Liu、Scott E. Allen、Qin Yang、Xumu Zhang
DOI:10.1002/chem.200700594
日期:2007.9.17
Two beta-receptor agonists (-)-denopamine and (-)-arbutamine were prepared in good yields and enantioselectivities by asymmetrichydrogenation of unprotected aminoketones for the first time by using Rh catalysts bearing electron-donating phosphine ligands. A series of alpha-primary and secondaryaminoketones were synthesized and hydrogenated to produce various 1,2-amino alcohols in good yields and
Novel benzylalcohol derivatives and processes for preparing same
申请人:Tanabe Seiyaku Co., Ltd.
公开号:US04324800A1
公开(公告)日:1982-04-13
A compound of the formula: ##STR1## wherein R is alkanoyl of one to 20 carbon atoms, benzoyl or lower alkyl-benzoyl, and processes for preparation thereof are disclosed. Said compound (I) and a pharmaceutically acceptable acid addition salt thereof are useful as a cardiotonic agent.