Ring Opening of Azetidinols by Phenols: Regiochemistry and Stereochemistry
摘要:
Ring opening of a series of 1-alkyl- and 1-benzyl-3-azetidinols by 6-bromophenol without added base is reported. Opening of trans-2-methyl- and cis- and trans-2-phenyl-3-azetidinols is highly regioselective, if not regiospecific. The 2-methyl compounds open by cleavage of the N-C4 bond and the 2-phenyl compounds by cleavage of the N-C2 bond in a highly stereoselective, if not stereospecific, manner, which involves inversion of configuration at C2. The results are rationalized in terms of nucleophilic ring opening of the azetidinium ions.
[EN] 2-ARYLMETHYLAZETIDINE CARBAPENEM DERIVATIVES AND PREPARATION THEREOF<br/>[FR] DERIVES DE 2-ARYLMETHYLAZETIDINE CARBAPENEM ET PREPARATION DE CEUX-CI
申请人:KOREA RES INST CHEM TECH
公开号:WO2006025634A1
公开(公告)日:2006-03-09
A 2-arylmethylazetidine carbapenem derivative of formula ( I ) or a pharmaceutically acceptable salt thereof exhibits a wide spectrum of antibacterial activities against Gram-positive and Gram-negative bacteria and excellent antibacterial activities against resistant bacteria such as methicillinresistant Staphylococcus aureus (MRSA) and quinolone-resistant strains (QRS).
2- Arylmethylazetidine Carbapenem Derivatives and Preparation Thereof
申请人:Kim Bong-Jin
公开号:US20070244089A1
公开(公告)日:2007-10-18
A 2-arylmethylazetidine carbapenem derivative of formula (I) or a pharmaceutically acceptable salt thereof exhibits a wide spectrum of antibacterial activities against Gram-positive and Gram-negative bacteria and excellent antibacterial activities against resistant bacteria such as methicillinresistant
Staphylococcus aureus
(MRSA) and quinolone-resistant strains (QRS).