Pd-catalyzed enantioselective synthesis of quaternary α-amino acid derivatives using a phenylalanine-derived P-chirogenic diaminophosphine oxide
摘要:
A Pd-catalyzed enantio selective synthesis of quaternary alpha-amino acid derivatives using a phenylalanine-derived P-chirogenic diaminophosphine oxide is described. Asymmetric allylic substitution using acyclic beta-keto esters with a nitrogen functional group at the alpha-carbon as prochiral nucleophiles proceeded in the presence of 5 mol % of Pd catalyst, 10 mol % of chiral diaminophosphine oxide 1j, BSA, and appropriate additives, affording the corresponding quaternary alpha-amino acid derivatives in excellent yield and in up to 92% ee. (c) 2007 Elsevier Ltd. All rights reserved.
Amide derivatives of N-urea substituted amino acids as formyl peptide receptor like-1 (FPRL-1) receptor modulators
申请人:Allergan, Inc.
公开号:US10172832B2
公开(公告)日:2019-01-08
The present invention relates to novel amide derivatives of N-urea substituted amino acids, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of the N-formyl peptide receptor like-1 (FPRL-1) receptor.
AMIDE DERIVATIVES OF N-UREA SUBSTITUTED AMINO ACIDS AS FORMYL PEPTIDE RECEPTOR LIKE-1 (FPRL-1) RECEPTOR MODULATORS
申请人:Allergan, Inc.
公开号:US20190343804A1
公开(公告)日:2019-11-14
The present invention relates to novel amide derivatives of N-urea substituted amino acids, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of the N-formyl peptide receptor like-1 (FPRL-1) receptor.
Studies on antidiabetic agents. VII Synthesis and hypoglycemic activity of 4-oxazoleacetic acid derivatives.
As part of a search for new antidiabetic agents, 4-oxazolealkanoic acid derivatives (III) were synthesized and tested for hypoglycemic activity in mice. 4-Oxazoleacetic acids (IIIb) bearing a styryl or a suitable aliphatic hydrocarbon moiety at the 2-position showed potent activity. The synthesis and structure-activity relationships of these compounds are presented.