A compound represented by general formula (1) (wherein R
1
represents a hydrogen atom, an optionally substituted C
1-6
alkyl group or the like; R
2
represents a hydrogen atom, an optionally substituted C
1-6
alkyl group or the like; R
3
represents a hydrogen atom or an optionally substituted C
1-6
alkyl group; R
4
represents a hydrogen atom, an optionally substituted C
1-6
alkyl group or the like; X
1
represents an optionally substituted C
2-6
alkynylene group or the like; A represents an optionally substituted bivalent aromatic hydrocarbon group or the like; X
2
represents an optionally substituted C
1-6
alkylene group or the like; Y
1
represents an oxygen atom or the like; and R
5
represents a hydrogen atom or the like) or a salt thereof is useful as an antibacterial agent.
[EN] ANTIBACTERIAL AND ANTIFUNGAL PLEUROMUTILIN CONJUGATES<br/>[FR] CONJUGUÉS DE PLEUROMUTILINE ANTIBACTÉRIENS ET ANTIFONGIQUES
申请人:UNIV SYDDANSK
公开号:WO2021219813A1
公开(公告)日:2021-11-04
Compounds of formula (1) comprising a pleuromutilin backbone with a triazole based side-group at C22 are provided. The compounds can be used for treatment of bacterial infections and fungal infections. Importantly, infections caused by multidrug-resistant bacteria, such as methicillin-resistant staphylococcus aureus (MRSA) may be treated effectively.
Encoded dendrimers with defined chiral composition via‘click’ reaction of enantiopure building blocks
作者:Bahar Yeniad、Hemantkumar Naik、Roey J. Amir、Cor E. Koning、Craig J. Hawker、Andreas Heise
DOI:10.1039/c1cc12434j
日期:——
Dendrimers with end-groups of defined chiral composition have been prepared from alkyne functional enantio-pure building blocks obtained by selective enzymatic (ADH) ketone reductions using click chemistry. Optical rotation and enantioselective enzymatic modification is in agreement with the chiral composition of the dendrimers and permits unique molecular-level encoding of stereoisomeric dendritic libraries.
Click-Connected Ligand Scaffolds: Macrocyclic Chelates for Asymmetric Hydrogenation
作者:Qing Zhang、James M. Takacs
DOI:10.1021/ol702890s
日期:2008.2.1
Click chemistry is used to construct ligand scaffolds for a series of chiral diphosphites. Enantioselectivity as high as 97% ee is obtained using these click ligands in rhodium-catalyzed asymmetric hydrogenation. Control experiments and spectroscopic data suggest that a 16-membered PP-macrocyclic Rh(I) chelate is formed.