92088-75-0

Upstream product

• 100-28-7 4-Nitrophenyl isocyanate 
• 56935-86-5 N-methylglycine potassium salt 
• 13200-60-7 Sarcosine ethyl ester 
• 107-97-1 sarcosine 

Downstream Products

• 873537-15-6 3-(4-aminophenyl)-1-methyl-imidazolidine-2,4-dione 

Relevant academic research and scientific papers

Hydrolysis of 4-imino-imidazolidin-2-ones in acid and the mechanism of cyclization of hydantoic acid amides

The hydrolysis of iminohydantoins generates the same tetrahedral intermediate T as that obtained in the cyclization of hydantoic acid amides to hydantoins. The ratio of the products of imine hydrolysis under kinetic control is determined by the relative height of the barriers of the breakdown of T to amide or to hydantoin. Thus the partitioning of products unequivocally proves which is the rate determining step in the cyclization reaction - formation or breakdown of T. UV and 1H NMR monitoring of the acid catalyzed hydrolysis of four 5-substituted 4-imino-1-methyl-3-(4-nitrophenyl)imidazolidin- 2-ones 1 found hydantoins 3 as the only products. The kinetics of hydrolysis of imines were measured in 0.001-1 M HCl. Contrary to the remaining imines, 1,5-dimethyl-4-imino-3-(4-nitrophenyl)imidazolidin-2-one 1b is readily oxidized as stock solution in THF containing peroxides to 1,5-dimethyl-5-hydroxy-4-imino- 3-(4-nitrophenyl)imidazolidin-2-one 1d. In all cases, hydrolysis was found to be zero order with respect to [H+]. As imines are fully protonated under the acidity studied, this is evidence of a transition state of a single positive charge. Comparison of imine hydrolysis rates with previous data on rates of cyclization of the corresponding amides of hydantoic acids allowed conditions (acid concentration, substitution pattern - gem-dimethyl effect) to be found that guaranteed kinetic control of the products obtained. Thus it was unequivocally proven that formation of the tetrahedral intermediate is rate determining in the cyclization of hydantoic acid amides. The small steric effects upon methyl substitution at 5-C and a solvent kinetic isotope effect kH/kD of 1.72 favour a mechanism for imine hydrolysis whereby the rate is limited by water attack on the protonated imine concerted with proton transfer from attacking water to a second water molecule. The Royal Society of Chemistry.

Derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them

The invention relates to new derivatives of 2-(iminomethyl)amino-phenyl which are NO synthase inhibitors and can trap reactive oxygen species. These compounds can notably be used for the treatment of stroke, of neurodegenerative diseases and of ischemic or hemorragic cardiac or cerebral infarctions. These compounds include: N-{4-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-{3-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-(4-{[{[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}(methyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-(3-{[(3,5-di-tert-butyl-4-hydroxybenzyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-[3-({[3-(4-hydroxy-3,5-diisopropylphenyl)propyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-(3-{[(4-hydroxy-3,5-diisopropylbenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(4-hydroxy-3,5-diisopropylphenyl)ethyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-2-(3,5-di-tert-butyl-4-hydroxybenzoyl)-N-1-(4-{[imino(thien-2-yl)methyl]amino}phenyl)-L-leucinamide; and pharmaceutically acceptable salts thereof.

New derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them

The invention relates to new derivatives of 2-(iminomethyl)amino-phenyl which are NO synthase inhibitors and can trap reactive oxygen species. These compounds can notably be used for the treatment of stroke, of neurodegenerative diseases and of ischemic or hemorragic cardiac or cerebral infarctions. These compounds include: N-{4-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-{3-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-(4-{[{[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}(methyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-(3-{[(3,5-di-tert-butyl-4-hydroxybenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-[3-({[3-(4-hydroxy-3,5-diisopropylphenyl)propyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-(3-{[(4-hydroxy-3,5-diisopropylbenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(4-hydroxy-3,5-diisopropylphenyl)ethyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-2-(3,5-di-tert-butyl-4-hydroxybenzoyl)-N-1-(4-{[imino(thien-2-yl)methyl]amino}phenyl)-L-leucinamide; and pharmaceutically acceptable salts thereof.

Derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them

A compound selected from the group consisting of a compound of the formula wherein A is selected from the group consisting of and the other substituents are defined in the specification having an inhibitory activity of NO-synthase enzymes producing nitrogen mono-oxide and/or an activity which traps the reactive oxygen species.

Multiple changes rate-determining, step the acid base catalyzed cyclizations of ethyl N-(p-nitrophenyl)hydantoates caused by methyl substitution

The slopes of the pH-rate profiles for the cyclization of 2-methyl- and 2,3-dimethyl hydantoates 1-NPU and 2-NPU between pH 1 and 7 change from 1 to 0 and then back to 1. A reaction first order in H+ was observed with the latter compound. The 2

The gem-dimethyl effect on reactivities in cyclizations through tetrahedral intermediates. Cyclization of methyl-substituted methyl amides of 5-(p-nitrophenyl)hydantoic acids

The cyclization of the title hydantoinamides, UA, to 3-(4-nitrophenyl)hydantoins, Hyd, is general-base catalysed. Reversible hydrolysis of the product hydantoin from the 2,3-dimethylhydantoinamide, 2-UA, above pH = 7 is a complicating feature. The rate profiles for cyclization comprise one acid-catalysed, two neutral and two hydroxide-catalysed regions in the pH-region 0-10. Solvent kinetic isotope effects indicate rate-determining expulsion of the methylamino group in the acid-catalysed reaction. These also agree with general-base catalysis at low pH being concerted with nucleophillic attack of the ureido group. At high pH the tetrahedral intermediate is in equilibrium with the reactants and the rate is limited by proton transfers producing T±. The accelerations upon methyl substitution vary strongly with the various processes observed and may be explained in terms of a general gem-dimethyl effect increasing along the reaction coordinate from reagent through cyclic tetrahedral intermediate to final ring product. As the effects for the breakdown of the intermediate are opposite in the forward and reverse directions, this changes the partitioning ratio and in turn could change the rate-determining step.

SUBSTITUENT EFFECTS ON HYDROLYTIC STABILITY AND HERBICIDAL ACTIVITY OF 3-ARYLIMIDAZOLIDINE-2,4-DIONES

Twenty-one derivatives of imidazolidine-2,4-dione have been prepared by reactions of substituted amino acids with aryl isocyanates in aqueous medium.Pre- and post-emergent herbicidal activities of all the compounds have been tested, and stability of five derivatives has been followed in aqueous medium within the pH range from 7.6 to 13.0.The highest pre-emergent herbicidal activity has been found with the derivatives XI-XVI which inhibit the growth of most indicator plants at the doses of 1.6 kg/ha.The derivatives studied are relatively stable in aqueous medium, the hydrolysis half-life of the compound XI being 9 days at pH 8.