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.
Substituted 1,3-dihydro-imidazol-2-one and 1,3-dihydro-imidazol-2-thione derivatives as inhibitors of matrix metalloproteinases and/or TNF-alpha converting enzyme (TACE)
申请人:Sheppeck James
公开号:US20050075384A1
公开(公告)日:2005-04-07
The present invention describes novel 1,3-dihydro-imidazol-2-one or 1,3-dihydro-imidazol-2-thione compounds of formula (I):
or a stereoisomer or pharmaceutically acceptable salt or solvate thereof, wherein A, L R
1
, R
2
, R
3
and R
4
are defined in the present specification, which are useful as selective inhibitors of MMP, TACE, aggrecanase or a combination thereof. This invention also relates to pharmaceutical compositions comprising these compounds and methods of using the same.
[EN] ANTI-PROLIFERATIVE COMPOUNDS AND METHODS FOR USING THE SAME<br/>[FR] COMPOSÉS ANTIPROLIFÉRATIFS ET PROCÉDÉS POUR LEUR UTILISATION
申请人:UNIV LELAND STANFORD JUNIOR
公开号:WO2012158691A1
公开(公告)日:2012-11-22
Disclosed herein are anti-proliferative compounds which find use in inhibiting the growth of cancer cells. Also provided herein are methods for using these compounds for inhibiting growth of cancer cells. Also provided herein are methods for using these compounds for treating a subject for hyperproliferative conditions, including without limitation the treatment of hematopoietic cancers.
Synthesis of a new class of imidazole-based cyclic peptides
作者:Gebhard Haberhauer、Frank Rominger
DOI:10.1016/s0040-4039(02)01365-5
日期:2002.9
A new class of cyclicpeptides based on dipeptidyl imidazoles is presented. Their structure consists of imidazole units alternating with standard amino acid residues and resembles naturally occurring marine cyclopeptides such as westiellamide and ascidiacyclamide.
Substituted 1,3-dihydro-imidazol-2-one and 1,3-dihydro-imidazol-2-thione derivatives as inhibitors of matrix metalloproteinases and/or TNF-α converting enzyme (TACE)
申请人:Bristol Myers Squibb Company
公开号:US07211671B2
公开(公告)日:2007-05-01
The present invention describes novel 1,3-dihydro-imidazol-2-one or 1,3-dihydro-imidazol-2-thione compounds of formula (I):
or a stereoisomer or pharmaceutically acceptable salt or solvate thereof, wherein A, L R1, R2, R3 and R4 are defined in the present specification, which are useful as selective inhibitors of MMP, TACE, aggrecanase or a combination thereof. This invention also relates to pharmaceutical compositions comprising these compounds and methods of using the same.