Novel endotoxin-sequestering compounds with terephthalaldehyde-bis-guanylhydrazone scaffolds
作者:Kriangsak Khownium、Stewart J. Wood、Kelly A. Miller、Rajalakshmi Balakrishna、Thuan B. Nguyen、Matthew R. Kimbrell、Gunda I. Georg、Sunil A. David
DOI:10.1016/j.bmcl.2005.11.059
日期:2006.3
high-throughput screens. We now describe the syntheses and preliminary structure-activityrelationships in a homologous series of bis-guanylhydrazone compounds decorated with hydrophobic functionalities. These first-generation compounds bind and neutralize lipopolysaccharide with a potency comparable to that of polymyxin B, a peptide antibiotic known to sequester LPS.
作者:Weiqiang Zhan、Zhongxing Liang、Aizhi Zhu、Serdar Kurtkaya、Hyunsuk Shim、James P. Snyder、Dennis C. Liotta
DOI:10.1021/jm070679i
日期:2007.11.1
In light of a proposed molecular mechanism for the C-X-C chemokine receptor type 4 (CXCR4) antagonist 1 (AMD3100), a template with the general structure 2 was designed, and 15 was identified as a lead by means of an affinity binding assay against the ligand-mimicking CXCR4 antagonist 3 (TN14003). Following a structure-activity profile around 15, the design and synthesis of a series of novel small molecular CXCR4 antagonists led to the discovery of 32 (WZ811). The compound shows subnanomolar potency (EC50 = 0.3 nM) in an affinity binding assay. In addition, when subjected to in vitro functional evaluation, 32 efficiently inhibits CXCR4/stromal cell-derived factor-1 (SDF-1)-mediated modulation of cyclic adenosine monophophate (CAMP) levels (EC50 = 1.2 nM) and SDF-1 induced Matrigel invasion (EC50 = 5.2 nM). Molecular field topology analysis (MFTA), a 2D quantitative structure-activity relationship (QSAR) approach based on local molecular properties (Van der Waals radii (VdW), atomic charges, and local lipophilicity), applied to the 32 series suggests structural modifications to improve potency.
GUANIDINE COMPOUNDS FOR REMOVAL OF OXYANIONS FROM AQUEOUS SOLUTIONS AND FOR CARBON DIOXIDE CAPTURE
申请人:UT-Battelle, LLC
公开号:US20180134655A1
公开(公告)日:2018-05-17
Methods for removing oxyanions from water according to the following steps: (i) dissolving an oxyanion precipitating compound into the aqueous source to result in precipitation of an oxyanion salt of the oxyanion precipitating compound; and (ii) removing the oxyanion salt from the water containing the oxyanion to result in water substantially reduced in concentration of the oxyanion; wherein the oxyanion precipitating compound has the following composition:
wherein A is a ring-containing moiety and X
m−
is an anionic species with a magnitude of charge m. The invention employs bis-iminoguanidinium compounds according to Formula (1a) as well as neutral precursor compounds according to Formula (1), which can be used for removing undesirable species from aqueous solutions or air, such as removal of sulfate from water and carbon dioxide from air.