Semi-synthesis of bioactive fluorescent analogues of the cytotoxic marine alkaloid discorhabdin C
作者:Cary F.C. Lam、Anna C. Giddens、Natasha Chand、Victoria L. Webb、Brent R. Copp
DOI:10.1016/j.tet.2012.02.052
日期:2012.4
facilitated the synthesis of a variety of fluorophore-labelled probes, of which dansyl analogue 20 exhibited biological activity, providing a tool for mechanism of action and cellular localization studies. An alternative probe design was also exemplified, whereby a bioactive alkyne-terminated analogue (24) was found to undergo Huisgen 1,3-dipolar cycloaddition ‘click’ reactions with fluorescent azides, enabling
Quiniclidine derivatives of (hetero) arylcycloheptanecarboxylic acid as muscarinic receptor antagonists
申请人:AstraZeneca AB
公开号:EP2256117A1
公开(公告)日:2010-12-01
The invention provides compounds of formula (I) wherein R4 is a group of formula (II) or (IIIa) or (IIIb) and R1, R2, R3, R5, a, b and X are as defined in the specification, a process for their preparation, pharmaceutical compositions containing them, a process for preparing pharmaceutical compositions, their use in therapy and intermediates of use in their preparation
本发明提供了式 (I) 的化合物(其中 R4 是式 (II) 或 (IIIa) 或 (IIIb) 的基团,R1、R2、R3、R5、a、b 和 X 如说明书中所定义)、其制备方法、含有它们的药物组合物、药物组合物的制备方法、它们在治疗中的用途以及用于制备它们的中间体。
Structure−Activity Relationships in the Binding of Chemically Derivatized CD4 to gp120 from Human Immunodeficiency Virus
作者:Hui Xie、Danny Ng、Sergey N. Savinov、Barna Dey、Peter D. Kwong、Richard Wyatt、Amos B. Smith、Wayne A. Hendrickson
DOI:10.1021/jm070564e
日期:2007.10.1
The first step in HIV infection is the binding of the envelope glycoprotein gp120 to the host cell receptor CD4. An interfacial "Phe43 cavity" in gp120, adjacent to residue Phe43 of gp120-bound CD4, has been suggested as a potential target for therapeutic intervention. We designed a CD4 mutant (D1D2F43C) for site-specific coupling of compounds for screening against the cavity. Altogether, 81 cysteine-reactive compounds were designed, synthesized, and tested. Eight derivatives exceeded the affinity of native D1D2 for gp 120. Structure-activity relationships (SAR) for derivatized CD4 binding to gp 120 revealed significant plasticity of the Phe43 cavity and a narrow entrance. The primary contacts for compound recognition inside the cavity were found to be van der Waals interactions, whereas hydrophilic interactions were detected in the entrance. This first SAR on ligand binding to an interior cavity of gp 120 may provide a starting point for structure-based assembly of small molecules targeting gp120-CD4 interaction.
Functionalizing Glycine Derivatives by Direct CC Bond Formation
作者:Liang Zhao、Chao-Jun Li
DOI:10.1002/anie.200801367
日期:2008.9.1
QUINICLIDINE DERIVATIVES OF (HETERO) ARYLCYCLOHEPTANECARBOXYLIC ACID AS MUSCARINIC RECEPTOR ANTAGONISTS