Syntheses of Phospholipids Containing 2-Nitrobenzyl Ester Moieties at the Terminals of Alkyl Chains and Properties of Photodegradable Liposomes from the Lipids
Syntheses of Phospholipids Containing 2-Nitrobenzyl Ester Moieties at the Terminals of Alkyl Chains and Properties of Photodegradable Liposomes from the Lipids
Synthesis and biological evaluation of novel (<i>E</i>)-<i>N'</i>-benzylidene hydrazides as novel c-Met inhibitors through fragment based virtual screening
C-Met plays a crucial role in the development and progression of neoplastic disease. Type II c-Met inhibitors recognise the inactive DFG-out conformation of the kinase, result in better anti-tumour effects due to synergistic effect against the other kinases. According to our previous works, an (E)-N'-benzylidene group was selected as the initial fragment. Two series of (E)-N'-benzylidene hydrazides were designed by fragment growth method. The inhibitory activities were in vitro investigated against c-Met and VEGFR-2. Compound 10b exhibited the most potent inhibitory activity against the c-Met inhibitor (IC50 = 0.37 nM). Compound 11b exhibited multi-target c-Met kinase inhibitory activity as a potential type II c-Met inhibitor (IC50 = 3.41 nM against c-Met; 25.34 nM against VEGFR-2). The two compounds also demonstrate the feasibility of fragment-based virtual screening method for drug discovery.
Supramolecular structures of three isomeric (<i>E</i>,<i>E</i>)-1-(2-iodophenyl)-4-(nitrophenyl)-2,3-diaza-1,3-butadienes: changes in intermolecular interactions consequent upon changes of substituent location
作者:Christopher Glidewell、John N. Low、Janet M. S. Skakle、James L. Wardell
DOI:10.1107/s0108270105009248
日期:2005.5.15
The supramolecular structures of the three isomeric (E,E)-1-(2-iodophenyl)-4-(2/3/4-nitrophenyl)-2,3-diaza-1,3-butadienes, C14H10IN3O2, are compared. In the 2-nitro isomer, the molecules are disordered across centres of inversion in space group C2/c and are linked into chains by a two-centre iodo-nitro interaction. The molecules of the 3-nitro isomer are linked into a three-dimensional framework by a combination of C-H center dot center dot center dot O and C-H center dot center dot center dot I hydrogen bonds and aromatic, pi-pi stacking interactions, while molecules of the 4-nitro isomer are linked into sheets by a C-H center dot center dot center dot O hydrogen bond and a two-centre iodo-nitro interaction.
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