Synthesis, biological evaluation, and molecular modeling studies of methylene imidazole substituted biaryls as inhibitors of human 17α-hydroxylase-17,20-lyase (CYP17)—Part II: Core rigidification and influence of substituents at the methylene bridge
Thirty-five novel substituted imidazolyl methylene biphenyls have been synthesized as CYP17 inhibitors for the potential treatment of prostate cancer. Their activities have been tested with recombinant human CYP17 expressed in Escherichia coli. Promising compounds were tested for selectivity against CYP11B1, CYP11B2, and hepatic CYP enzymes 3A4, 1A2, 2B6 and 2D6. The core rigidified compounds (30-35)
Synthesis of 1,1′-Diarylethanes and Related Systems by Displacement of Trichloroacetimidates with Trimethylaluminum
作者:Nivedita S. Mahajani、John D. Chisholm
DOI:10.1021/acs.joc.8b00027
日期:2018.4.6
Benzylic trichloroacetimidates are readily displaced by trimethylaluminum under Lewis acid promoted conditions to provide the corresponding methyl substitution product. This method is a convenient way to access 1,1′-diarylethanes and related systems, which play a significant role in medicinal chemistry, with a number of systems owing their biological activity to this functionality. Most benzylic substrates
Promoter free allylation of trichloroacetimidates with allyltributylstannanes under thermal conditions to access the common 1,1′-diarylbutyl pharmacophore
作者:Nivedita S. Mahajani、John D. Chisholm
DOI:10.1039/c8ob00687c
日期:——
found in many biologically active small molecules. To access these systems under mild conditions, the reaction of diarylmethyl trichloroacetimidates with allyltributylstannanes was explored. Simply heating allyltributylstannane with the trichloroacetimidate resulted in substitution of the imidate with an allyl group. Unlike other methods used to access these systems, no strong base, transition metal catalyst
ANTIMICROBIAL POLYMYXINS FOR TREATMENT OF BACTERIAL INFECTIONS
申请人:MICURX PHARMACEUTICALS, INC.
公开号:US20160185823A1
公开(公告)日:2016-06-30
The present invention provides antimicrobial polymyxin compounds of the following formula I:
or pharmaceutically acceptable salts, hydrates, or solvates thereof that are antibacterial agents, pharmaceutical compositions containing them, methods for their use, and methods for preparing these compounds.
α-Vinylation of Ester Equivalents via Main Group Catalysis for the Construction of Quaternary Centers
作者:Chloe G. Williams、Sepand K. Nistanaki、Conner W. Wells、Hosea M. Nelson
DOI:10.1021/acs.orglett.3c00535
日期:2023.5.26
A methodology for the construction of sterically congested quaternary centers via the trapping of vinyl carbocations with silylketeneacetals is disclosed. This main group-catalyzed α-vinylation reaction is advantageous as methods to access these congested motifs are limited. Moreover, β,γ-unsaturated carbonyl moieties and tetrasubstituted alkenes are present in various bioactive natural products