An efficient synthesis of pyrroles by a one-pot, three-component condensation of a carbonyl compound, an amine and a nitroalkene in a molten ammonium salt
作者:Brindaban C. Ranu、Suvendu S. Dey
DOI:10.1016/s0040-4039(03)00439-8
日期:2003.3
A one-pot, three-component condensation of a carbonylcompound, an amine and a nitroalkene leading to an efficientsynthesis of alkyl-substituted pyrroles has been carried out in molten tetrabutylammonium bromide. Neither a catalyst nor an organic solvent is required for this reaction and the molten ammonium salt is recyclable.
The present invention relates to a method of treatment and/or prophylaxis of a microbial infection, comprising the step of administering an effective amount of a compound of formula (I), in which X and Y are either the same or different and selected from a heteroatom; is a double or single bond depending on the heteroatoms X and Y; R
1
to R
5
are either the same or different and selected from hydrogen or a non-deleterious substituent; and R
6
and R
7
are either the same or different and selected from hydrogen and a non-deleterious substituent or one of R
6
and R
7
are absent when there is a double bond present, pharmaceutically acceptable salts or derivatives, pro-drugs, tautomers and/or isomers thereof. The present invention also relates to a method for protecting a subject from radiation damage, a method of cancer radiotherapy and use as an antimicrobial or radioprotective agent of the compound of formula (I) defined above. Some of the compounds of formula (I) are novel and are also described in the present invention, together with pharmaceutical or veterinary compositions containing them.
absence of the double bond next to the nitro group. The peroxyl radical scavenger capacity of the p-dimethylaminophenyl-derivatives was even higher, being the reduced form of these compounds even more active. In fact, while the antioxidant capacity of 1-dimethylamino-4-(2-nitro-1Z-ethenyl)benzene and 1-dimethylamino-4-(2-nitro-1Z-propenyl)benzene was 4.2 ± 0.1 and 5.4 ± 0.1 Trolox Eq/mol, respectively; ORAC
Fe‐HCl: An Efficient Reagent for Deprotection of Oximes as well as Selective Oxidative Hydrolysis of Nitroalkenes and Nitroalkanes to Ketones
作者:Prasun K. Pradhan、Sumit Dey、Parasuraman Jaisankar、Venkatachalam S. Giri
DOI:10.1081/scc-200051681
日期:2005.4.1
Abstract Fe‐HCl mixture was found to selectively perform oxidative hydrolysis of the nitroalkenes 1a–j and nitroalkanes 2a–j to the ketones 3a–j. Also, the reagent was observed to deprotect the oximes 7a–j to carbonyl compounds 8a–j in excellent yields.
Nitro-styrene derivatives having antimicrobial activity
申请人:Biodiem Ltd.
公开号:EP2471531A2
公开(公告)日:2012-07-04
The present invention relates to a method of treatment and/or prophylaxis of a microbial infection, comprising the step of administering an effective amount of a compound of formula (I), in which X and Y are either the same or different and selected from a heteroatom; is a double or single bond depending on the heteroatoms X and Y; R1 to R5 are either the same or different and selected from hydrogen or a non-deleterious substituent; and R6 and R7 are either the same or different and selected from hydrogen and a non-deleterious substituent or one of R6 and R7 are absent when there is a double bond present, pharmaceutically acceptable salts or derivatives, pro-drugs, tautomers and/or isomers thereof. The present invention also relates to a method for protecting a subject from radiation damage, a method of cancer radiotherapy and use as an antimicrobial or radioprotective agent of the compound of formula (I) defined above. Some of the compounds of formula (I) are novel and are also described in the present invention, together with pharmaceutical or veterinary compositions containing them.