Synthesis of chiral β-chalcogen amine derivatives and Gram-positive bacteria activity
摘要:
Efficient ring opening reaction between aziridines and diphenyl dichalogenides using HCl, Zn degrees in ionic liquid is disclosed, affording chiral beta-chalcogen amines derivatives in good yields under mild reaction condition. The ionic liquid was further reused four times without the loss of its efficiency. The chiral chalcogenoamines showed antimicrobial activity against Gram-positive bacteria strains. (C) 2012 Elsevier Ltd. All rights reserved.
Concepts for ligand design in asymmetric catalysis: a study of chiral amino thiol ligands
作者:James C. Anderson、Rachel Cubbon、Michael Harding、Daniel S. James
DOI:10.1016/s0957-4166(98)00344-9
日期:1998.10
A series of new chiral sulfur-nitrogen chelate ligands, derived from amino acids, has been synthesised rationally. Fruitless experiments into catalytic asymmetric conjugate additions and desymmetrisation of meso-epoxides led us to analyse our ligands in the catalytic asymmetric addition of diethylzinc to aromatic aldehydes. These latter experiments were successful with chiral benzylic alcohols being obtained in up to 82% enantiomeric excess. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of chiral β-chalcogen amine derivatives and Gram-positive bacteria activity
作者:Josimar Vargas、Senthil Narayanaperumal、Kashif Gul、Bruno B. Ravanello、Luciano Dornelles、Letiere C. Soares、Camilla F.S. Alves、Taiane Schneider、Rodrigo de A. Vaucher、Roberto C.V. Santos、Oscar E.D. Rodrigues
DOI:10.1016/j.tet.2012.09.049
日期:2012.12
Efficient ring opening reaction between aziridines and diphenyl dichalogenides using HCl, Zn degrees in ionic liquid is disclosed, affording chiral beta-chalcogen amines derivatives in good yields under mild reaction condition. The ionic liquid was further reused four times without the loss of its efficiency. The chiral chalcogenoamines showed antimicrobial activity against Gram-positive bacteria strains. (C) 2012 Elsevier Ltd. All rights reserved.