63289-53-2

Upstream product

• 6144-82-7 (4-nitro-phenyl)-acetyl azide 
• 7409-30-5 p-nitrobenzylamine 
• 503-38-8 trichloromethyl chloroformate 
• 619-73-8 4-nitrobenzyl chloride 
• 39139-87-2 tetrabutylammonium isocyanate 
• 104-03-0 4-nitrobenzeneacetic acid 
• 50434-36-1 4-nitrophenylacetyl chloride 
• 18483-99-3 2-(4-nitrobenzyloxy)tetrahydro-2H-pyran 
• 32315-10-9 bis(trichloromethyl) carbonate 

Downstream Products

• 79479-18-8 (4-nitrobenzylaminocarbonylthio)acetic acid 
• 676997-10-7 Acetic acid (2S,3R,4S,5S,6R)-2-[(11E,13E)-(4R,5S,6S,7R,9R,16R)-4-acetoxy-5-methoxy-9,16-dimethyl-2,10-dioxo-7-(2-oxo-ethyl)-oxacyclohexadeca-11,13-dien-6-yloxy]-4-dimethylamino-6-methyl-5-(4-nitro-benzylcarbamoyloxy)-tetrahydro-pyran-3-yl ester 
• 301232-35-9 4-(N-(N-(4-nitrobenzyl)carbamoyl)-N-(prop-1-yl)amino)-piperidine trifluoroacetate 
• 301232-33-7 4-(N-(N-(4-nitrobenzyl)carbamoyl)-N-methylamino)-piperidine trifluoroacetate 
• 7409-30-5 p-nitrobenzylamine 
• 1621514-21-3 tert-butyl 2-methyl-2-(4-(5-(1-(((4-nitrobenzyl)carbamoyl)oxy)propyl)isoxazol-3-yl)phenoxy)propanoate 
• 79479-19-9 (4-aminobenzylaminocarbonylthio)acetic acid 
• 143818-90-0 4-[3,3-Diethyl-1-(4-nitro-benzylcarbamoyl)-4-oxo-azetidin-2-yloxy]-benzoic acid 
• 143818-91-1 4-[1-(4-Amino-benzylcarbamoyl)-3,3-diethyl-4-oxo-azetidin-2-yloxy]-benzoic acid 

Relevant academic research and scientific papers

Design and Synthesis of 4-Alkylidene-β-lactams: Benzyl- and Phenethyl-carbamates as Key Fragments to Switch on Antibacterial Activity

The emergence of multidrug-resistant bacterial strains is particularly important in chronic pathologies such as cystic fibrosis (CF), in which persistent colonization and selection of resistant strains is favored by the frequent and repeated use of antibacterial agents. Staphylococcus aureus is a common pathogen in CF patients that has an associated increased multidrug resistance. In previous studies we demonstrated that the presence of a 4-alkylidene side chain directly linked to a β-lactam appeared to strengthen the potency against S. aureus, especially against methicillin-resistant S. aureus (MRSA) strains. In the present study, 21 new 4-alkylidene-β-lactams were synthesized and evaluated for antibacterial activity. We designed the new compounds to have aryl, benzyl, or phenethyl-carbamate groups on the C3 hydroxyethyl side chain. We found a correlation between biological activity and the nitrogen substituent of the carbamate group, and two phenethyl-carbamate β-lactams were shown to be valuable antibacterial agents against selected linezolid-resistant strains, with a minimum inhibitory concentrations of 2–4 mg L?1.

A modified Curtius reaction: an efficient and simple method for direct isolation of free amine

The Curtius rearrangement and related reactions are often used to convert carboxylic acids to the corresponding primary amines. However, this reaction often requires harsh conditions for hydrolysis of the isocyanate intermediates to amines, and can also be contaminated by the formation of corresponding ureas due to the reactive nature of the intermediates. We have discovered that by quenching the isocyanate intermediates with sodium trimethylsilanolate, the free amines can be isolated after aqueous workup. This mild and fast procedure provides free amines in one pot with good yields.

Triphenylphosphine/2,3-dichloro-5,6-dicyanobenzoquinone (DDQ)/[n-Bu4N]OCN as a useful system for the efficient conversion of tetrahydropyranyl (THP) ethers to the corresponding alkyl isocyanates

Triphenylphosphine/2,3-dichloro-5,6-dicyanobenzoquinone/tetrabutylammonium cyanate was used as an efficient system for the conversion of tetrahydropyranyl ethers to the corresponding alkyl isocyanates. Taylor & Francis Group, LLC.

A new and convenient method of generating alkyl isocyanates from alcohols, thiols and trimethylsilyl ethers using triphenylphosphine/2,3-dichloro-5,6- dicyanobenzoquinone/Bu4NOCN

Alkyl isocyanates are prepared in good to excellent yields by treatment of alcohols, thiols and trimethylsilyl ethers with triphenylphosphine/2,3-dichloro- 5,6-dicyanobenzoquinone/ Bu4NOCN in acetonitrile. This method is highly selective for conversion of primary alcohols to alkyl isocyanates in the presence of secondary and tertiary alcohols, thiols and trimethysilyl ethers. Georg Thieme Verlag Stuttgart.

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.

2-(iminomethyl) amino-phenyl derivatives, preparation, application as medicines and pharmaceutical compositions containing same

A compound of the formula wherein the substituents are defined as in the specification and their pharmaceutically acceptable salts having NOS and ROS activity.

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.

Novel carbamates as potent histamine H3 receptor antagonists with high in vitro and oral in vivo activity

The known histamine H3 receptor antagonists burimamide, thioperamide, clobenpropit, and a related homohistamine thioamide derivative were taken as templates in search for new leads. Novel histamine H3 receptor antagonists structurally described as carbamate derivatives of 3-(1H-imidazol-4- yl)propanol were prepared in high yields by treatment of the alcohol with corresponding isocyanates or carbamoyl chlorides and investigated for their H3 receptor antagonist activity. Different chain lengths and various substituents possessing different electronic and steric parameters were introduced and structure-activity relationships established. In different functional tests, the new antagonists showed high H3 receptor antagonist potencies in vitro (-log K(i) values of 6.4-8.4) at synaptosomes of rat cerebral cortex and low activities at histamine H1 and H2 receptor subtypes. They were also screened for their central in vivo activity in mice after peroral administration. The most promising compounds (2, 16, 19) showed ED50 values of about 1-2 mg/kg and thus are potential drugs for the therapy of H3 receptor dependent diseases. Some of the novel carbamate derivatives are H3 receptor selective compounds with high in vitro and in vivo activity.

Orally Active β-Lactam Inhibitors of Leukocyte Elastase-1. Activity of 3,3-Diethyl-2-azetidinones

A thorough analysis of the mechanism of inhibition of human leukocyte elastase (HLE) by a monocyclic β-lactam and the mechanism of β-lactam hydrolysis led to the preparation of potent and highly stable inhibitors of HLE.This work led to the identification of 4--3,3-diethyl-1-carbonyl>-2-azetidinone (2) as the first orally active inhibitor of human leukocyte elastase (HLE).Analogs of 2 with different substituents on the urea N were synthesized and evaluated for their activity in vitro against HLE as well as in vivo in a hamster lung hemorrhage model.Compounds with a methyl or a methoxy group in the para position of the benzene ring were very potent in both assays.The results are discussed on the basis of the proposed model for the binding of this class of inhibitors to HLE and a possible mechanism of inhibition is presented.