Month: October 2022

Related Products of 87694-50-6On March 31, 1999, Falkiewicz, Bogdan; Kowalska, Katarzyna; Kolodziejczyk, Aleksandra S.; Wisniewski, Kaximierz; Lankiewicz, Leszek published an article in Nucleosides & Nucleotides. The article was 《Synthesis of new chiral peptide nucleic acid (PNA) monomers by a simplified reductive amination method》. The article mentions the following:

The aim of this work was the preparation of four new peptide nucleic acid (PNA) monomers, e.g. I [R = iso-Bu, CH2Ph, (R)-CH(OCH2Ph)CH3, CH2C6H4-4-OCH2Ph; Boc = Me3CO2C] by reductive amination of Nα-Boc-protected chiral amino aldehydes, derived from Leu, Phe, Tyr(Bzl), and Thr(Bzl), with Me glycinate. To the crude 2-substituted Me N-(2-Boc-aminoethyl)glycinates obtained, thymin-1-ylacetic acid was coupled using TBTU procedure in a one-pot reaction. PNA monomers were isolated and characterized. In the experiment, the researchers used (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Related Products of 87694-50-6)

(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

In 2014,Organic & Biomolecular Chemistry included an article by Xin, Bo-Tao; de Bruin, Gerjan; Verdoes, Martijn; Filippov, Dmitri V.; van der Marel, Gijs A.; Overkleeft, Herman S.. Recommanded Product: 87694-50-6. The article was titled 《Exploring dual electrophiles in peptide-based proteasome inhibitors: carbonyls and epoxides》. The information in the text is summarized as follows:

Peptide epoxyketones are potent and selective proteasome inhibitors. Selectivity is governed by the epoxyketone dual electrophilic warhead, which reacts with the N-terminal threonine 1,2-amino alc. uniquely present in proteasome active sites. We studied a series of C-terminally modified oligopeptides featuring adjacent electrophiles based on the epoxyketone warhead. We found that the carbonyl moiety in the natural warhead is essential, but that the adjacent epoxide can be replaced by a carbonyl, though with considerable loss of activity. The results came from multiple reactions, including the reaction of (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Recommanded Product: 87694-50-6)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides.Recommanded Product: 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

In 2010,Sammet, Benedikt; Bogner, Tobias; Nahrwold, Markus; Weiss, Christine; Sewald, Norbert published 《Approaches for the Synthesis of Functionalized Cryptophycins》.Journal of Organic Chemistry published the findings.Recommanded Product: tert-Butyl N,N’-diisopropylcarbamimidate The information in the text is summarized as follows:

The first syntheses of bioactive cryptophycins functionalized at unit D were accomplished in a one-pot Staudinger reduction/cyclization step. An azido precursor for the lower part of the backbone was introduced to minimize protective group chem. and enable a very convenient synthesis of cryptophycin-52 and unit D cryptophycin analogs containing an ester or a free carboxylic acid for bioconjugations. Both new cryptophycin derivatives show high biol. activity in cytotoxicity assays. The results came from multiple reactions, including the reaction of tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Recommanded Product: tert-Butyl N,N’-diisopropylcarbamimidate)

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.Recommanded Product: tert-Butyl N,N’-diisopropylcarbamimidate

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

In 2011,Kurono, Nobuhito; Ohtsuga, Kentaro; Wakabayashi, Masanori; Kondo, Tadahiro; Ooka, Hirohito; Ohkuma, Takeshi published 《Kinetic resolution of racemic α-tert-alkyl-α-hydroxy esters by enantiomer-selective carbamoylation》.Journal of Organic Chemistry published the findings.Recommanded Product: 71432-55-8 The information in the text is summarized as follows:

Kinetic resolution of sterically hindered racemic α-tert-alkyl-α-hydroxy esters is performed by enantiomer-selective carbamoylation with the t-Bu-Box-Cu(II) catalyst (Box = bis(oxazoline)). The reaction with 0.5 equiv of n-C3H7NCO is carried out with a substrate-to-catalyst molar ratio of 500-5000 at -20 to 25 °C. The high enantiomer-discrimination ability of the catalyst achieves an excellent stereoselectivity factor (s = kfast/kslow) of 261 in the best case. A catalytic cycle for this reaction is proposed. In the experimental materials used by the author, we found tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Recommanded Product: 71432-55-8)

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Halogenation, in which one or more hydrogen atoms of an amine is replaced by a halogen atom, occurs with chlorine, bromine, and iodine, as well as with some other reagents, notably hypochlorous acid (HClO). With primary amines the reaction proceeds in two stages, producing N-chloro- and N,N-dichloro-amines, RNHCl and RNCl2, respectively. With tertiary amines, an alkyl group may be displaced by a halogen.Recommanded Product: 71432-55-8

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

In 2018,Nakajima, Ryo; Novakova, Zora; Tueckmantel, Werner; Motlova, Lucia; Barinka, Cyril; Kozikowski, Alan P. published 《2-Aminoadipic Acid-C(O)-Glutamate Based Prostate-Specific Membrane Antigen Ligands for Potential Use as Theranostics》.ACS Medicinal Chemistry Letters published the findings.Category: amides-buliding-blocks The information in the text is summarized as follows:

The design and synthesis of prostate specific membrane antigen (PSMA) ligands derived from 2-aminoadipic acid, a building block that has not previously been used to construct PSMA ligands, are reported. The effects of both the linker length and of an N-substituent of our PSMA ligands were probed, and X-ray structures of five of these ligands bound to PSMA were obtained. Among the ligands disclosed herein, I showed the highest inhibitory activity for PSMA. As ligand I can readily be radiolabeled since its fluorine atom is adjacent to the nitrogen atom of its pyridine ring, the use of this and related compounds as theranostics can be pursued. After reading the article, we found that the author used tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Category: amides-buliding-blocks)

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Category: amides-buliding-blocks

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

In 2019,Science of the Total Environment included an article by Ding, Xinliang; Zhu, Jingying; Wang, Xiaoxiao; Zhou, Weijie; Wu, Keqin; Zhou, Zhu; Zhou, Kun; Wu, Di; Jiao, Jiandong; Xia, Yankai; Wang, Xinru. SDS of cas: 683-57-8. The article was titled 《Different cytotoxicity of disinfection by-product haloacetamides on two exposure pathway-related cell lines: Human gastric epithelial cell line GES-1 and immortalized human keratinocyte cell line HaCaT》. The information in the text is summarized as follows:

Humans are exposed to disinfection byproducts (DBPs) mainly through drinking water ingestion and dermal contact. As an emerging class of nitrogenous DBPs (N-DBPs), haloacetamides (HAcAms) have been found to have significantly higher cytotoxicity than regulated DBPs. In this study, we investigated the cytotoxicity of HAcAms on two exposure pathway-related cell lines: human gastric epithelial GES-1 cells and immortalized keratinocytes HaCaT. Our results showed that the ranking order of cytotoxicity of 13 HAcAms was different between HaCaT and GES-1 cells. In addition, the 50% inhibitive concentration in HaCaT was 1.01-3.29 times that in GES-1. Further comparison among GES-1, HaCaT and CHO cell lines confirmed that different cell lines exhibited different sensitivity to the same compound Importantly, HAcAms showed 5.83-7.13 × 104 times higher toxicity than the well-clarified DBP chloroform, clearly demonstrating the increased toxicity of HAcAms. Finally, using a novel high-content screening (HCS) anal., we found that 39.29% of chlorinated HAcAms, 42.86% of brominated HAcAms and 16.07% of iodinated HAcAms significantly affected at least one of the cell-health parameters, such as nuclear size, membrane permeability, mitochondrial membrane potential, or cytochrome c release, in GES-1 or HaCaT cells. Thus, brominated HAcAms appear to have stronger effects under the sublethal exposure dose, possibly causing cytotoxicity via apoptosis. Together, our study provides new insights to the toxicity of HAcAms and a comprehensive toxicol. dataset for health risk assessment. In the part of experimental materials, we found many familiar compounds, such as 2-Bromoacetamide(cas: 683-57-8SDS of cas: 683-57-8)

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.SDS of cas: 683-57-8

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

《Discovery of CyclicBoronic Acid QPX7728, an Ultrabroad-SpectrumInhibitor of Serine and Metallo-β-lactamases》 was published in Journal of Medicinal Chemistry in 2020. These research results belong to Hecker, Scott J.; Reddy, K. Raja; Lomovskaya, Olga; Griffith, David C.; Rubio-Aparicio, Debora; Nelson, Kirk; Tsivkovski, Ruslan; Sun, Dongxu; Sabet, Mojgan; Tarazi, Ziad; Parkinson, Jonathan; Totrov, Maxim; Boyer, Serge H.; Glinka, Tomasz W.; Pemberton, Orville A.; Chen, Yu; Dudley, Michael N.. Related Products of 683-57-8 The article mentions the following:

Despite major advances in the beta-lactamase inhibitor field, certain enzymes remain refractory to inhibition by agents recently introduced. Most important among these are the Class B (metallo) enzyme NDM-1 of Enterobacteriaceae and the Class D (OXA) enzymes of Acinetobacter baumannii. Continuing the boronic acid program that led to vaborbactam, efforts were directed toward expanding the spectrum to allow treatment of a wider range of organisms. Through key structural modifications of a bicyclic lead, stepwise gains in spectrum of inhibition were achieved, ultimately resulting in QPX7728, I. This compound displays a remarkably broad spectrum of inhibition, including Class B and Class D enzymes, and is little affected by porin modifications and efflux. I is a promising agent for use in combination with a beta-lactam antibiotic for the treatment of a wide range of multidrug resistant gram-neg. bacterial infections, by both i.v. and oral administration. In the part of experimental materials, we found many familiar compounds, such as 2-Bromoacetamide(cas: 683-57-8Related Products of 683-57-8)

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.Related Products of 683-57-8

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

Synthetic Route of C11H24N2OIn 2022 ,《Optimization of TEAD P-Site Binding Fragment Hit into In Vivo Active Lead MSC-4106》 appeared in Journal of Medicinal Chemistry. The author of the article were Heinrich, Timo; Peterson, Carl; Schneider, Richard; Garg, Sakshi; Schwarz, Daniel; Gunera, Jakub; Seshire, Anita; Koetzner, Lisa; Schlesiger, Sarah; Musil, Djordje; Schilke, Heike; Doerfel, Benjamin; Diehl, Patrizia; Boepple, Pia; Lemos, Ana R.; Sousa, Pedro M. F.; Freire, Filipe; Bandeiras, Tiago M.; Carswell, Emma; Pearson, Nicholas; Sirohi, Sameer; Hooker, Mollie; Trivier, Elisabeth; Broome, Rebecca; Balsiger, Alexander; Crowden, Abigail; Dillon, Christian; Wienke, Dirk. The article conveys some information:

The dysregulated Hippo pathway and, consequently, hyperactivity of the transcriptional YAP/TAZ-TEAD complexes is associated with diseases such as cancer. Prevention of YAP/TAZ-TEAD triggered gene transcription is an attractive strategy for therapeutic intervention. The deeply buried and conserved lipidation pocket (P-site) of the TEAD transcription factors is druggable. The discovery and optimization of a P-site binding fragment are described. Utilizing structure-based design, enhancement in target potency was engineered into the hit, capitalizing on the established X-ray structure of TEAD1. The efforts culminated in the optimized in vivo tool MSC-4106 (I), which exhibited desirable potency, mouse pharmacokinetic properties, and in vivo efficacy. In close correlation to compound exposure, the time- and dose-dependent downregulation of a proximal biomarker could be shown. The experimental part of the paper was very detailed, including the reaction process of tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8Synthetic Route of C11H24N2O)

tert-Butyl N,N’-diisopropylcarbamimidate(cas: 71432-55-8) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Synthetic Route of C11H24N2O

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

《Evaluation of composition effects on the physicochemical and biological properties of polypeptide-based hydrogels for potential application in wound healing》 was published in Polymers (Basel, Switzerland) in 2021. These research results belong to Giliomee, Johnel; du Toit, Lisa C.; Kumar, Pradeep; Klumperman, Bert; Choonara, Yahya E.. Recommanded Product: H-Lys(Boc)-OH The article mentions the following:

In this study, the effect of crosslinking and concentration on the properties of a new library of low-concentration poly(Lys60-ran-Ala40)-based hydrogels for potential application in wound healing was investigated in order to correlate the hydrogel composition with the desired physicochem. and biofunctional properties to expand the assortment of poly-L-lysine (PLL)-based hydrogels suitable for wound healing. Controlled ring-opening polymerization (ROP) and precise hydrogel compositions were used to customize the physicochem. and biofunctional properties of a library of new hydrogels comprising poly(L-lysine-ran-L-alanine) and four-arm poly(ethylene glycol) (P(KA)/4-PEG). The chem. composition and degree of crosslinking via free amine quantification were analyzed for the P(KA)/4-PEG hydrogels. In addition, the rheol. properties, pore morphol., swelling behavior and degradation time were characterized. Subsequently, in vitro cell studies for evaluation of the cytotoxicity and cell adhesion were performed. The 4 wt% 1:1 functional molar ratio hydrogel with P(KA) concentrations as low as 0.65 wt% demonstrated low cytotoxicity and desirable cell adhesion towards fibroblasts and thus displayed a desirable combination of properties for wound healing application. The experimental part of the paper was very detailed, including the reaction process of H-Lys(Boc)-OH(cas: 2418-95-3Recommanded Product: H-Lys(Boc)-OH)

H-Lys(Boc)-OH(cas: 2418-95-3) belongs to amino acids. Amino acids are not generally considered to be electrochemically active because products of the oxidation accumulate on the electrode surface and prevent it from participating in any further electrochemical processes.Recommanded Product: H-Lys(Boc)-OH

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

《Light-Driven Coordination-Induced Spin-State Switching: Rational Design of Photodissociable Ligands》 was published in Chemistry – A European Journal in 2012. These research results belong to Thies, Steffen; Sell, Hanno; Bornholdt, Claudia; Schuett, Christian; Koehler, Felix; Tuczek, Felix; Herges, Rainer. Application of 70298-88-3 The article mentions the following:

The bistability of spin states (e.g., spin crossover) in bulk materials is well investigated and understood. The authors recently extended spin-state switching to isolated mols. at room temperature (light-driven coordination-induced spin-state switching, or LD-CISSS). Whereas bistability and hysteresis in conventional spin-crossover materials are caused by cooperative effects in the crystal lattice, spin switching in LD-CISSS is achieved by reversibly changing the coordination number of a metal complex by means of a photochromic ligand that binds in one configuration but dissociates in the other form. The authors present math. proof that the maximum efficiency in property switching by such a photodissociable ligand (PDL) is only dependent on the ratio of the association constants of both configurations. Rational design by using DFT calculations was applied to develop a photoswitchable ligand with a high switching efficiency. The starting point was a nickel-porphyrin as the transition-metal complex and 3-phenylazopyridine as the photodissociable ligand. Calculations and experiments were performed in two iterative steps to find a substitution pattern at the phenylazopyridine ligand that provided optimum performance. Following this strategy, the authors synthesized an improved photodissociable ligand that binds to the Ni-porphyrin with an association constant that is 5.36 times higher in its trans form than in the cis form. The switching efficiency between the diamagnetic and paramagnetic state is efficient as well (72 % paramagnetic Ni-porphyrin after irradiation at 365 nm, 32 % paramagnetic species after irradiation at 440 nm). Potential applications arise from the fact that the LD-CISSS approach for the first time allows reversible switching of the magnetic susceptibility of a homogeneous solution Photoswitchable contrast agents for magnetic resonance imaging and light-controlled magnetic levitation are conceivable applications. In addition to this study using 2,2-Dimehtyl-N-pyridin-3-yl-propionamide, there are many other studies that have used 2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3Application of 70298-88-3) was used in this study.

2,2-Dimehtyl-N-pyridin-3-yl-propionamide(cas: 70298-88-3) belongs to anime. The methylamines occur in small amounts in some plants. Many polyfunctional amines (i.e., those having other functional groups in the molecule) occur as alkaloids in plants—for example, mescaline, 2-(3,4,5-trimethoxyphenyl)ethylamine; the cyclic amines nicotine, atropine, morphine, and cocaine; and the quaternary salt choline, N-(2-hydroxyethyl)trimethylammonium chloride, which is present in nerve synapses and in plant and animal cells.Application of 70298-88-3

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