Desymmetrization of σ-Symmetric Biphenyl-2,6-diyl Diacetate Derivatives by Lipase-Catalyzed Hydrolysis: Unexpected Effect of C(3′)-Substituent on the Enantiotopic Group Selectivity
desymmetrization of σ-symmetric 3′-substituted 2′,6′-dimethoxybiphenyl-2,6-diyl diacetate derivatives to the corresponding monoacetates was effected by using Rhizopus oryzae lipase (ROL) and porcine pancreatic lipase (PPL), despite the remoteness of the C(3′) substituent from the acetate groups. ROL promoted hydrolysis of the pro-S acetates, irrespective of the type of C(3′) substituent, whereas PPL promoted hydrolysis
The invention provides compounds of formula (I): Said compounds being inhibitors of Kv3 channels and of use in the prophylaxis or treatment of related disorders.
Hydrogen Bonding and Alcohol Effects in Asymmetric Hypervalent Iodine Catalysis: Enantioselective Oxidative Dearomatization of Phenols
作者:Muhammet Uyanik、Takeshi Yasui、Kazuaki Ishihara
DOI:10.1002/anie.201303559
日期:2013.8.26
Iodine chooses: A conformationally flexible C2‐symmetric organoiodine(III) catalyst for the highly enantioselective catalytic oxidative dearomatization of phenols has been developed. Catalysis is controlled by intramolecular hydrogen‐bonding interactions and additional achiral alcohols.
[EN] HYDANTOIN DERIVATIVES USEFUL AS KV3 INHIBITORS<br/>[FR] DÉRIVÉS D'HYDANTOÏNE UTILES EN TANT QU'INHIBITEURS DE KV3
申请人:AUTIFONY THERAPEUTICS LTD
公开号:WO2012076877A1
公开(公告)日:2012-06-14
The invention provides compounds of formula (I): Said compounds being inhibitors of Kv3 channels and of use in the prophylaxis or treatment of related disorders.