Enantioselective synthesis of β-amino acids based on BINAP—ruthenium(II) catalyzed hydrogenation
摘要:
BINAP-Ru(II) catalyzed hydrogenation of beta-substituted (E)-beta-(acylamino)acrylic acids allows efficient enantioselective synthesis of beta-amino acids. The Z double bond isomers which possess an intramolecular hydrogen bond between amide and ester groups are more reactive but are hydrogenated with poor enantioselectivity. BINAP-Rh(I) complexes afford only moderate stereoselectivity with the opposite sense of enantioselection.
COMPOUNDS WITH GROWTH HORMONE RELEASING PROPERTIES
申请人:NOVO NORDISK A/S
公开号:EP0833845A1
公开(公告)日:1998-04-08
[EN] COMPOUNDS WITH GROWTH HORMONE RELEASING PROPERTIES<br/>[FR] COMPOSES PRESENTANT DES PROPRIETES DE LIBERATION DE L'HORMONE DE CROISSANCE
申请人:NOVO NORDISK A/S
公开号:WO1997000894A1
公开(公告)日:1997-01-09
(EN) Compounds of the formula A-B-C-D(E)p are used to stimulate the release of growth hormone from the pituitary.(FR) La présente invention concerne des composés représentés par la formule A-B-C-D(E)p, et dont l'utilisation permet de stimuler la libération de l'hormone de croissance par l'hypophyse.