Formaldehyde as Tethering Organocatalyst: Highly Diastereoselective Hydroaminations of Allylic Amines
作者:Colin R. Hesp、Melissa J. MacDonald、M. Mehdi Zahedi、Didier A. Bilodeau、Shu-Bin Zhao、Marc Pesant、André M. Beauchemin
DOI:10.1021/acs.orglett.5b02675
日期:2015.10.16
Catalysts possessing sufficient activity to achieve intermolecular alkene hydroaminations under mild conditions are rare, and this likely accounts for the scarcity of asymmetric variants of this reaction. Herein, highly diastereoselective hydroaminations of allylicamines utilizing hydroxylamines as reagents and formaldehyde as catalyst are reported. This catalyst induces temporary intramolecularity
Aliphatic amino carboxylic and amino phosphonic acids, amino nitriles and amino tetrazoles as cellular rescue agents
申请人:Dyck E. Lillian
公开号:US20050159393A1
公开(公告)日:2005-07-21
Novel compounds of the formula I are described:
wherein:
R
1
=(CH
2
)
m
CH
3
where m is 0 or an integer in the range from 1 to 16, or an alkenyl, alkynyl, alkoxy, alkylthio, or alkyl sulfinyl group having from 2 to 17 carbon atoms,
R
2
=H, CH
3
or CH
2
CH
3
R
3
=H or CH
3
R
4
=H or CH
3
R
5
=lower alkyl having from 1 to 5 carbon atoms n is an integer in the range from 1 to 3,
and X is carboxyl (COOH) or carbalkoxy (COOR
5
), cyano (C≡N), phosphonic acid (PO
3
H
2
), phosphonate ester (PO
3
[R
5
]
2
) or 5-tetrazole, and pharmaceutically acceptable salts thereof. Preferably, the compounds are optically pure enantiomers of the R- or S-configuration in which R
3
=R
4
=R
5
=H, R
2
=CH
3
and R
1
is a saturated aliphatic chain of one to five carbon atoms. The compounds are useful as cellular rescue agents.
[EN] POLO-LIKE KINASE INHIBITORS<br/>[FR] INHIBITEURS DE KINASE DE TYPE POLO
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2009067547A1
公开(公告)日:2009-05-28
Compounds of the following formula are provided for use with kinases, wherein the variables are as defined herein. Also provided are pharmaceutical compositions, kits and articles of manufacture comprising such compounds; methods and intermediates useful for making the compounds; and methods of using said compounds.
The straightforward access to peptoid-based multivalent thioglycoclusters displaying 1-thio-β-d-galactose or 1-thio-α/β-d-mannose and their evaluation towards two bacterial lectins are described.
Design, synthesis, X-ray studies, and biological evaluation of novel macrocyclic HIV-1 protease inhibitors involving the P1′-P2′ ligands
作者:Arun K. Ghosh、W. Sean Fyvie、Margherita Brindisi、Melinda Steffey、Johnson Agniswamy、Yuan-Fang Wang、Manabu Aoki、Masayuki Amano、Irene T. Weber、Hiroaki Mitsuya
DOI:10.1016/j.bmcl.2017.09.003
日期:2017.11
synthesis, and evaluation of a new class of HIV-1proteaseinhibitors containing diverse flexible macrocyclic P1′-P2′ tethers are reported. Inhibitor 5a with a pyrrolidinone-derived macrocycle exhibited favorable enzyme inhibitory and antiviral activity (Ki = 13.2 nM, IC50 = 22 nM). Further incorporation of heteroatoms in the macrocyclic skeleton provided macrocyclic inhibitors 5m and 5o. These compounds
报道了设计,合成和评估一类新型的HIV-1蛋白酶抑制剂,其包含多种柔性大环P1'-P2'系链。具有吡咯烷酮衍生的大环的抑制剂5a表现出良好的酶抑制和抗病毒活性(K i = 13.2 nM,IC 50 = 22 nM)。在大环骨架中进一步掺入杂原子可提供大环抑制剂5m和5o。这些化合物显示出出色的HIV-1蛋白酶抑制性(分别为K i = 62 pM和14 pM)和抗病毒活性(IC 50分别 为5.3 nM和2.0 nM)。抑制剂5o 它还对DRV耐药的HIV-1变异株具有很高的效力。