Remote Editing of Stacked Aromatic Assemblies for Heteroannular C−H Functionalization by a Palladium Switch between Aromatic Rings
作者:Zhiqian Yu、Qianhui Liu、Qian Li、Zhenmei Huang、Yudong Yang、Jingsong You
DOI:10.1002/anie.202212079
日期:2022.11.25
A transient ligand-enabled palladium-catalyzed heteroannularC−H olefination and allylation of stackedaromaticassemblies has been developed, in which the remoteheteroannular site over the proximal homoannular site is functionalized. Mechanistic investigations support an olefin coordination-promoted interannular palladium migration process determinative for reversal of the site-selectivity.
A directed enolization strategy enables by-product-free construction of contiguous stereocentres en route to complex amino acids
作者:Fenglin Hong、Timothy P. Aldhous、Paul D. Kemmitt、John F. Bower
DOI:10.1038/s41557-024-01473-5
日期:——
Homochiral α-amino acids are widely used in pharmaceutical design as key subunits in chiral catalyst synthesis or as buildingblocks in synthetic biology. Many synthetic methods have been developed to access rare or unnatural variants by controlling the installation of the α-stereocentre. By contrast, and despite their importance, α-amino acids possessing β-stereocentres are much harder to synthesize
PHARMACEUTICAL COMPOSITIONS COMPRISING POLYMERIC BINDERS WITH NON-HYDROLYSABLE COVALENT BONDS AND THEIR USE IN TREATING CELIAC DISEASE
申请人:UNIVERSITE DE MONTREAL
公开号:EP1948201A1
公开(公告)日:2008-07-30
Pharmaceutical Compositions Comprising Polymeric Binders with Non-Hydrolysable Covalent Bonds and Their Use in Treating Celiac Disease
申请人:Leroux Jean-Christophe
公开号:US20080254099A1
公开(公告)日:2008-10-16
A pharmaceutical composition comprising a polymeric binder including a high molecular weight synthetic polymer having a backbone constituted of non hydrolysable covalent bonds, said polymer being able to form electrostatic bonds at a pH lower than the isoelectric point of gluten and peptides derived from the degradation of gluten, and being able to bind to gluten or peptides derived from the degradation of gluten in the gastrointestinal tract, and a pharmaceutically acceptable carrier. Methods of using the polymeric binder for binding gluten or a peptide derived from the degradation of gluten, for decreasing the degradation of gluten into toxic peptides or for decreasing interaction of gluten or peptides derived from the degradation of gluten with the gastrointestinal mucosa.