Category: amides-buliding-blocks

《A three component protocol for the synthesis of aziridines using BF3·(OEt)2》 was written by Basha, Shaik Firoj; Anwar, Shaik. Safety of 4-Methylbenzenesulfonamide And the article was included in Asian Journal of Chemistry in 2020. The article conveys some information:

Synthesis of syn and anti isomers of sulfonamides derivatives I [R = H, 4-F, 4-Cl, etc.; R1 = H, 4-Cl] was carried out by a three component reaction using phenacyl bromide, p-toluenesulfonamide and benzaldehydes in presence of mild Lewis acid such as BF3·(OEt)2 in dichloromethane. The synthetic utility of this protocol was carried out with syn-isomer to yield corresponding cis-aziridines. This protocol was operationally simple for a wide variety of substituted benzaldehydes and substituted phenacyl bromides. In the experiment, the researchers used many compounds, for example, 4-Methylbenzenesulfonamide(cas: 70-55-3Safety of 4-Methylbenzenesulfonamide)

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Safety of 4-Methylbenzenesulfonamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《Self-assembled Ln(III) cyclen-based micelles and AuNPs conjugates as candidates for luminescent and magnetic resonance imaging (MRI) agents》 was written by Molloy, Jennifer K.; Nonat, Aline M.; O’Brien, John E.; Brougham, Dermot F.; Gunnlaugsson, Thorfinnur. Formula: C2H4BrNO And the article was included in Supramolecular Chemistry in 2020. The article conveys some information:

The tetra-substituted heptadentate cyclen (1,4,7,10-tetraazacyclododecane) based Eu(III)/Tb(III)/Gd(III)-complexes 1.Ln and 2.Ln were developed. An 1.Eu/Tb and 2.Eu/Tb and were employed in the formation of luminescent self-assembling ternary structures, and we demonstrate that only in the presence of appropriate sensitizing antennae, was the lanthanide-emission of 1.Eu/Tb and 2.Eu/Tb ‘switched on’. An 1.Gd/2.Gd were developed as potential MIR contrast agents, and employed in NMRD-measurements, where their relaxivity was investigated, and their (relatively high) r1 values determined The formation of a self-assembled micelle-type structure was clearly observed for 2.Gd. The functionalised gold nanoparticles 1.Ln-AuNP were also synthesized from 1.Ln. As for the free complexes, the Ln-emission was ‘switched on’ for 1.Eu/Tb-AuNP in the presence of the antennae. NMRD measurements indicated that the relaxivity for the 1.Gd-AuNP systems was very high, with a value of 445 s-1mM-1 (at 400 MHz), demonstrating the cumulative effect of the relatively high number of 1.Gd complexes on the surface of the AuNP. In the part of experimental materials, we found many familiar compounds, such as 2-Bromoacetamide(cas: 683-57-8Formula: C2H4BrNO)

2-Bromoacetamide(cas: 683-57-8) can be used in preparation of (2-carbamoylmethoxy-5-chloro-benzyl)-carbamic acid tert-butyl ester. It was aslo used as precursor to dehydropeptidase I inactivator.Formula: C2H4BrNO

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2019,Inorganica Chimica Acta included an article by Pradhan, Rabindra N.; Hossain, Sayed M.; Lakma, Avinash; Stojkov, Dragana D.; Verbic, Tatjana Z.; Angelovski, Goran; Pujales-Paradela, Rosa; Platas-Iglesias, Carlos; Singh, Akhilesh K.. Name: 2-Bromoacetamide. The article was titled 《Water soluble Eu(III) complexes of macrocyclic triamide ligands: Structure, stability, luminescence and redox properties》. The information in the text is summarized as follows:

Two macrocyclic triamide octadentate chelator scaffolds L1 and L2 were synthesized, characterized by several spectroscopic techniques, and their pKa values were determined by potentiometric titration Using these ligands, two water soluble paramagnetic Eu(III) complexes, [EuL1(OH2)](NO3)3·H2O (EuL1) and [EuL2(OH2)](NO3)3·H2O (EuL2) were synthesized and characterized in the solid state and in solution Single crystal x-ray diffraction measurement of [EuL1(OH2)](NO3)3. H2O (EuL1) reveals octadentate binding of the ligand to Eu(III) and ninth coordination being completed by an O atom of a solvent mol. (H2O). X-ray diffraction data of [EuL2(OH2)](NO3)3·H2O (EuL2) were severely disordered and hence its chloride analog [EuL2(DMF)]Cl3·H2O·MeOH (EuL2-Cl) was synthesized and characterized using single-crystal x-ray diffraction measurements. The crystal data of [EuL2(DMF)](Cl)3·H2O·MeOH (EuL2-Cl) reveal octadentate binding of the ligand to Eu(III), with the ninth coordination being completed by an O atom of a solvent mol. (DMF). Luminescence measurements confirm the presence of a H2O mol. coordinated to Eu(III) in aqueous solution The stability of the Eu(III) complexes was studied using spectrophotometric molar ratio method. Cyclic voltammetry studies obtained from aqueous solutions of the Eu(III) complexes show reversible one electron reduction processes at the glassy C electrode with E1/2 = -0.799 V and -0.777 V (vs. Ag/AgCl) for the complexes of L1 and L2. In the experimental materials used by the author, we found 2-Bromoacetamide(cas: 683-57-8Name: 2-Bromoacetamide)

2-Bromoacetamide(cas: 683-57-8) can be used in preparation of (2-carbamoylmethoxy-5-chloro-benzyl)-carbamic acid tert-butyl ester. It was aslo used as precursor to dehydropeptidase I inactivator.Name: 2-Bromoacetamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2013,Urabe, Fumiya; Nagashima, Shunsuke; Takahashi, Keisuke; Ishihara, Jun; Hatakeyama, Susumi published 《Total Synthesis of (-)-Cinatrin C1 Based on an In(OTf)3-Catalyzed Conia-Ene Reaction》.Journal of Organic Chemistry published the findings.Application of 71432-55-8 The information in the text is summarized as follows:

The stereocontrolled total synthesis of (-)-cinatrin C1 (I), a phospholipase A2 inhibitor, has been accomplished. The key feature includes the stereoselective construction of the highly substituted THF core by In(OTf)3-catalyzed Conia-ene reaction of the oxygen-tethered acetylenic malonic ester II followed by dihydroxylation with concomitant lactonization. The experimental part of the paper was very detailed, including the reaction process of tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Application of 71432-55-8)

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Application of 71432-55-8

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Zhang, Wen; Wang, Xueyuan; Zhang, Haoyang; Wen, Tiantian; Yang, Lin; Miao, Hang; Wang, Jia; Liu, Hailong; Yang, Xu; Lei, Meng; Zhu, Yongqiang published an article in Bioorganic & Medicinal Chemistry. The title of the article was 《Discovery of novel tripeptide propylene oxide proteasome inhibitors for the treatment of multiple myeloma》.COA of Formula: C13H26N2O4 The author mentioned the following in the article:

The ubiquitin proteasome pathway (UPP) plays a critical role in the maintenance of cell homeostasis and the development of diseases, such as cancer and neurodegenerative disease. A series of novel tripeptide propylene oxide compounds as proteasome inhibitors were designed, synthesized and biol. investigated in this manuscript. The enzymic activities of final compounds against 20S human proteasome were investigated and structure-activity relationship (SAR) was summarized. Some potent compounds were further evaluated to inhibit the proliferation of multiple myeloma (MM) cancer cell lines RPMI8226 and U266B. The results showed that some compounds were active against MM cancer cell lines with IC50 values of less than 50 nM. The microsomal metabolic stabilities in human, rat and mice species were carried out and the results showed that compounds (I) (R1 = iso-Bu, Bn) were stable enough to be in vivo investigated. The in vivo pharmacokinetic results showed that compounds I (R1 = iso-Bu, Bn) had acceptable biol. parameters for both ig and iv administrations. In vivo antitumor activities of compounds I (R1 = iso-Bu, Bn) with the doses of 100 mg/kg and 50 mg/kg BIW were performed by using RPMI8226 xenograft nude mouse model. Toxicities of compounds I (R1 = iso-Bu, Bn) were not observed during the experiment and dose dependent effect was obvious and the tumor volume was greatly inhibited. In addition to this study using (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide, there are many other studies that have used (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6COA of Formula: C13H26N2O4) was used in this study.

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.COA of Formula: C13H26N2O4Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Lee, Min Jae; Bhattarai, Deepak; Jang, Hyeryung; Baek, Ahreum; Yeo, In Jun; Lee, Seongsoo; Miller, Zachary; Lee, Sukyeong; Hong, Jin Tae; Kim, Dong-Eun; Lee, Wooin; Kim, Kyung Bo published their research in Journal of Medicinal Chemistry on August 12 ,2021. The article was titled 《Macrocyclic Immunoproteasome Inhibitors as a Potential Therapy for Alzheimer’s Disease》.Category: amides-buliding-blocks The article contains the following contents:

Previously, we reported that immunoproteasome (iP)-targeting linear peptide epoxyketones improve cognitive function in mouse models of Alzheimer’s disease (AD) in a manner independent of amyloid β. However, these compounds’ clin. prospect for AD is limited due to potential issues, such as poor brain penetration and metabolic instability. Here, we report the development of iP-selective macrocyclic peptide epoxyketones prepared by a ring-closing metathesis reaction between two terminal alkenes attached at the P2 and P3/P4 positions of linear counterparts. We show that a lead macrocyclic compound DB-60 (20) effectively inhibits the catalytic activity of iP in ABCB1-overexpressing cells (IC50: 105 nM) and has metabolic stability superior to its linear counterpart. DB-60 (20) also lowered the serum levels of IL-1α and ameliorated cognitive deficits in Tg2576 mice. The results collectively suggest that macrocyclic peptide epoxyketones have improved CNS drug properties than their linear counterparts and offer promising potential as an AD drug candidate. In the experimental materials used by the author, we found (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Category: amides-buliding-blocks)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Category: amides-buliding-blocksAmides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Estel, L.; Linard, F.; Marsais, F.; Godard, A.; Queguiner, G. published an article on February 28 ,1989. The article was titled 《Synthesis of ortho-substituted aminopyridines. Metalation of pivaloylamino derivatives》, and you may find the article in Journal of Heterocyclic Chemistry.Electric Literature of C10H14N2O The information in the text is summarized as follows:

The three isomeric (pivaloylamino)pyridines were lithiated and treated with various electrophiles to afford ortho-substituted pivaloylaminopyridines in good yields. Secondary pyridine alcs. were oxidized to the corresponding aminopyridyl ketones. Pyridopyrimidines, benzonaphthyridines, as well as an analog of the natural antitumor alkaloid ellipticine, were synthesized by this method. The experimental process involved the reaction of 2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3Electric Literature of C10H14N2O)

2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Electric Literature of C10H14N2O

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《Copper(I)-mediated denitrogenative macrocyclization for the synthesis of cyclic α3β-tetrapeptide analogs》 was published in Chemistry – An Asian Journal in 2017. These research results belong to Chen, Chun-Chi; Wang, Sheng-Fu; Su, Yung-Yu; Lin, Yuya A.; Lin, Po-Chiao. Related Products of 87694-50-6 The article mentions the following:

A copper(I)-mediated denitrogenative reaction has been successfully developed for the preparation of cyclic tetrapeptides. The key reactive intermediate, ketenimine, triggers intramol. cyclization through attack of the terminal amine group to generate an internal β-amino acid with an amidine linkage. The chem. developed herein provides a new synthetic route for the preparation of cyclic α3β-tetrapeptide analogs that contain important biol. properties and results in rich structural information being obtained for conformational studies. With the success of this copper(I)-catalyzed macrocyclization, two histone deacetylase inhibitor analogs consisting of the cyclic α3β-tetrapeptide framework have been successfully synthesized. In addition to this study using (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide, there are many other studies that have used (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Related Products of 87694-50-6) was used in this study.

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Related Products of 87694-50-6 Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《An easy and convenient synthesis of Weinreb amides and hydroxamates》 was written by de Luca, Lidia; Giacomelli, Giampaolo; Taddei, Maurizio. Synthetic Route of C13H26N2O4 And the article was included in Journal of Organic Chemistry on April 6 ,2001. The article conveys some information:

A simple and convenient one-flask method for the preparation of Weinreb amides, hydroxamates, and hydroxamic acids on a large scale used mild reaction conditions and inexpensive reagents; the methodol. is a useful addition to parallel syntheses. Thus, reacting PhCO2H with MeNHOMe in THF containing 2-chloro-4,6-dimethoxy-1,3,5-triazine [CMDT], 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride [DMTMM], or cyanuric chloride and N-methylmorpholine [NMM] gave the amide PhCONMeOMe in high yields. The results came from multiple reactions, including the reaction of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Synthetic Route of C13H26N2O4)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Synthetic Route of C13H26N2O4 Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Formula: C7H9NO2SIn 2022 ,《Solvent-Triggered Long-Range Proton Transport in 7-Hydroxyquinoline Using a Sulfonamide Transporter Group》 was published in Journal of Organic Chemistry. The article was written by Nakashima, Kosuke; Georgiev, Anton; Yordanov, Dancho; Matsushima, Yasuyuki; Hirashima, Shin-ichi; Miura, Tsuyoshi; Antonov, Liudmil. The article contains the following contents:

The ability of long-range proton transport by substitution of 7-hydroxyquinoline at the eighth position with sulfonamide and sulfonylhydrazone rotor units to act as a crane-arm has been studied. Different proton transport pathways triggered by different stimuli have been established depending on the structure of the crane-arms. Solvent-driven proton switching from OH to the quinoline nitrogen (Nquin) site, facilitated by a sulfonamide transporter group in polar protic and aprotic solvents, has been confirmed by optical (absorption and fluorescence) and NMR spectroscopies as well as by single-crystal X-ray structure anal. Photoinduced long-range proton transport to the Nquin site upon 340 nm UV light irradiation has been estimated in sulfonylhydrazone, which is not sensitive to solvent-driven switching. Both compounds have exhibited acid-triggered switching by trifluoroacetic acid due to the formation of a stable six-membered intramol. hydrogen bonding interaction between the protonated Nquin and crane-arm. The structures of acid-switched form were confirmed by NMR spectroscopy and single-crystal X-ray structure anal. The behavior of the compounds suggests a big step forward in the advanced proton pump-switching architecture because they cover three distinct driving forces in the switching process: solvent, light, and acid. The experimental part of the paper was very detailed, including the reaction process of 4-Methylbenzenesulfonamide(cas: 70-55-3Formula: C7H9NO2S)

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Amines have a free lone pair with which they can coordinate to metal centers. Amine–metal bonds are weaker because amines are incapable of backbonding, but they are still important for sensing applications.While stronger than hydrogen bonds, amine–metal bonds are still weaker than both covalent and ionic bonds.Formula: C7H9NO2S

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics