申请人:The Provost, Fellows, Foundation Scholars, & the other Members of Board, of the College of the Holy
公开号:US20150018566A1
公开(公告)日:2015-01-15
The invention provides combretastatin A-4 like compounds that are modified to have enhanced tubulin binding activity and in some embodiments the ability to promote accumulation in the vasculature undergoing angiogenesis (homing activity). The compounds are based on the combretastatin A-4 skeletal structure having a tubulin-binding pharmacophore comprising two fused rings (A and B rings) in which the B ring is substituted with (a) an aromatic ring structure (C ring) and (b) a second substituent/functional group that comes off the B ring. The aromatic ring structure is typically a six membered ring phenolic or aniline structure, or may also be a fused ring structure such as a substituted or unsubstituted naphthalene. The second substituent on the B ring may for example be a substituent which has been found to provide enhanced tubulin binding activity (for example a carbonyl group), or may be a substituent that facilitates functionalisation of the B ring (for example an hydroxyl or amine group), or it may be a binding agent for a target that is preferentially expressed on vasculature undergoing angiogenesis, and not expressed on quiescent vasculature.
Tuning the Molecular Packing of Self‐Assembled Amphiphilic Pt
<sup>II</sup>
Complexes by Varying the Hydrophilic Side‐Chain Length
作者:Lorena Herkert、Philipp Selter、Constantin G. Daniliuc、Nils Bäumer、Jasnamol P. Palakkal、Gustavo Fernández、Michael Ryan Hansen
DOI:10.1002/chem.202003445
日期:2021.3.8
constitutes one of the major challenges in self‐assembly and is essential for the preparation of functional materials. Herein, we have achieved high precision control over the supramolecular packing of amphiphilic PtII complexes by systematic variation of the hydrophilic side‐chainlength. A novel approach of general applicability based on complementary X‐ray diffraction and solid‐state NMR spectroscopy
The enantioselectivetotalsynthesis of an unusual pentacyclic proaporphine alkaloid, (−)-misramine, was achieved. The synthetic strategy relied on an enantioselective intramolecular Friedel–Crafts-type 1,4-addition using an asymmetric organocatalyst to construct a spiroindane skeleton containing an all-carbon quaternary stereocenter and a double reductive amination of the keto-aldehyde to form a piperidine
An improved process for the preparation of 5-bromo-2-methoxyresorcinol
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0471941A2
公开(公告)日:1992-02-26
This invention is concerned with an improved process for metallating 2,4,6-tribromoanisole 1 and reacting this intermediate lithio species with various electrophiles for example the trialkoxy borates which an example is trimethylborate, the improvement comprising carrying out the reaction under heterogenous conditions. This product is oxidatively converted to the compound 5-bromo-2-methoxy-resorcinol 2, which is in turn converted to the known 2-methoxy-resorcinol 3. The process and intermediate are useful in the synthesis of platelet activating factor antagonist thiazolium, 3-[[3-[[hydroxy[2-methoxy-3-(tetradecyloxy) phenoxy]phosphinyl]oxy]phenyl]methyl]-5-methyl-, hydroxide, inner salt CA of U. S. Patent 4983592 (1991).
Analogs of platelet activating factor. 6. Mono- and bis-aryl phosphate antagonists of platelet activating factor
作者:A. Wissner、M. L. Carroll、K. E. Green、S. S. Kerwar、W. C. Pickett、R. E. Schaub、L. W. Torley、S. Wrenn、C. A. Kohler
DOI:10.1021/jm00087a023
日期:1992.5
A series of aryl phosphoglyceride (3, 19-6 1) and bis-aryl phosphate (67-135) antagonists of platelet activating factor (PAF) were prepared. A group of four bifunctional phosphorus reagents (5a-c and 7) were developed that allowed the preparation of these aryl phosphates in which the position of aromatic substitution can be varied. These compounds were examined for their ability to inhibit PAF-induced platelet aggregation of rabbit platelets. Selected compounds were also evaluated for their ability to displace [H-3]PAF from its receptor on rabbit platelets. These in vitro data were compared to similar data obtained for a number of known PAF antagonists. The compounds were evaluated in vivo, in both the mouse and rabbit, for their ability to prevent death induced by a lethal challenge of PAF. The relationships between the biological activity and the nature, lipophilicity, and position of substituents of the aromatic rings were studied. Compound 105 (CL 184005) has been selected to undergo further development as a potential therapeutic agent for the treatment of septic shock in man.