Asymmetric oxidation of alkyl aryl sulfides in crystalline cyclodextrin complexes
摘要:
Alkyl aryl sulfides were enantioselectively oxidized in the crystalline cyclodextrin (CD) complexes under various conditions. The oxidation of alkyl phenyl sulfoxides in the beta-cyclodextrin (beta-CD) complexes resulted in higher chiral induction than that in the alpha-CD complexes. Methyl 1- or 2-naphthyl sulfides were oxidized more enantioselectively in beta-CD than in gamma-CD. By changing the methyl substituent of 1-naphthyl sulfide to an isobutyl group, the reaction of the gamma-CD complex increased the chiral induction reversely. The highest optical yield, 81%, was achieved in the combination of peracetic acid and methyl 1-naphthyl sulfide in the crystalline beta-CD complex suspended in water at the oxidizing condition of 0-degrees-C under nitrogen, which afforded the formation of the (S)-(-)-sulfoxide in high chemical yield without formation of sulfone. The binding constants, K (M-1), were not reflected on the chiral induction for the oxidation with the crystalline CD complexes.
[EN] ALLOSTERIC BINDING COMPOUNDS<br/>[FR] COMPOSÉS DE LIAISON ALLOSTÉRIQUES
申请人:UNIV AARHUS
公开号:WO2010094289A1
公开(公告)日:2010-08-26
The present invention relates to allosteric binding compounds of formula (I), especially for the treatment of CNS disorders, together with pharmaceutical compositions and methods of treatment including these compounds.
The present invention relates to allosteric binding compounds of formula (I), especially for the treatment of CNS disorders, together with pharmaceutical compositions and methods of treatment including these compounds.