[EN] ANTIMICROBIAL COMPOSITIONS AND USES<br/>[FR] COMPOSITIONS ANTIMICROBIENNES ET LEURS UTILISATIONS
申请人:UNI I OSLO
公开号:WO2010040839A1
公开(公告)日:2010-04-15
An agent comprising the compound according to general formula (I) wherein R1, R2, R3 and R4 are each independently H or a substituent, and wherein at least one of R1, R3 and R4 is halogen, cyano, cyanate, thiocyanate or C1-C6 haloalkyl.
An agent comprising the compound according to general formula (I) wherein R
1
, R
2
, R
3
and R
4
are each independently H or a substituent, and wherein at least one of R
1
, R
3
and R
4
is halogen, cyano, cyanate, thiocyanate or C
1
-C
6
haloalkyl.
Abstract (Z)-5-(Bromomethylene)thiophen-2(5H)-one reacts in a Michael-type addition across the methylene side chain with nucleophiles followed by elimination of bromide. The reaction was done at room temperature and the yields were good. The aromatic sulfur substitution products showed potent activity as biofilm inhibitors. GRAPHICAL ABSTRACT
5-(Bromoalkylidene)furan-2(5H)-ones, thiophen-2(5H)-ones, and pyrrol-2(5H)-ones are prepared in good yields by cleavage of the corresponding 2-acyl-5-methoxy heterocycles using oxalyl bromide in dichloromethane at ambient temperature. (C) 2012 Elsevier Ltd. All rights reserved.