Tag: 200-300

《Cucurbit[7]uril Enables Multi-Stimuli-Responsive Release from the Self-Assembled Hydrophobic Phase of a Metal Organic Polyhedron》 was written by Samanta, Soumen K.; Quigley, Jeffrey; Vinciguerra, Brittany; Briken, Volker; Isaacs, Lyle. Reference of tert-Butyl (5-aminopentyl)carbamateThis research focused ontumor antitumor doxorubicin cucurbituril drug carrier. The article conveys some information:

Mixed self-assembly of ligands 1, 2, 1,6-hexanediamine (HDA), and Pd(NO3)2 afforded Fujita-type metal organic polyhedron MOP1 (diameter ≈ 8.2 nm), which is covalently functionalized with an average of 18 cucurbit[7]uril (CB[7]) units, as evidenced by 1H NMR, diffusion-ordered spectroscopy NMR, and transmission electron microscopy measurements. By virtue of the host-guest properties of CB[7], the inner cavity of MOP can be rendered hydrophobic by using octadecyl HDA (3) as guest during the self-assembly process. The hydrophobic cavity was successfully utilized to trap the hydrophobic dye Nile Red (NR) and the anticancer drug doxorubicin (DOX). The stimuli-responsive release of encapsulated NR or DOX occurs (1) upon addition of a competitive binder (e.g., adamantane ammonium (ADA)) for CB[7], (2) by a dual pH-chem. stimulus involving the protonation state change of adamantane carboxylate at pH 5.8, and (3) by a dual pH-photochem. stimulus involving photoisomerization of trans-6 to cis-6 at pH 5.8. NR is released from NR@MOP2 within HeLa cancer cells. This body of work suggests that the covalent attachment of cucurbit[n]uril to metal organic polyhedra constitutes a promising vehicle for the development of both diagnostic and therapeutic nanoparticles. In the experimental materials used by the author, we found tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3Reference of tert-Butyl (5-aminopentyl)carbamate)

Some of the reported applications of tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3) include: synthesis of of a supermacrocycle that self-assemble to form organic nanotubes., preparation of water-soluble unsymmetrical sulforhodamine fluorophores from monobrominated sulfoxanthene dye, synthesis of functionalized porphyrins as biocompatible carrier system for photodynamic therapy (PDT).Reference of tert-Butyl (5-aminopentyl)carbamate

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

In 2022,Ulusoy, Meltem; Asliyuce, Sevgi; Keskin, Nevin; Denizli, Adil published an article in Process Biochemistry (Oxford, United Kingdom). The title of the article was 《Beauvericin purification from fungal strain using molecularly imprinted cryogels》.Safety of H-Trp-OMe.HCl The author mentioned the following in the article:

Beauveria bassiana is a wide host range entomopathogenic fungus that plays a substantial part to control of insect populations. During its pathogenic phase, fungus syntheses several metabolites. One of these metabolites is beauvericin (BEA) and it shows as an antibiotic, antifungal, insecticidal activity. Mol. imprinting approach allows selective and sensitive recognition of chosen template mol. by leaving artificial imprinted cavities in polymer matrix that provides high affinity and selectivity toward desired compound Cryogels are gel matrixes prepared by the method of cryotropic gelation performed below the f.p. of monomer solutions Under these special conditions, the polymer material resulting from gel formation has rather unusual macroporous morphologies and processability. In this study, BEA-imprinted cryogel columns were prepared for purification of beauvericin from fungal extracts According to the exptl. results, optimum adsorption conditions were determined as pH 6.5 buffer solution, 1 mL/min flow rate and 25°C. Under these conditions, the highest adsorption capacity of cryogels was found to be 43 mg/g. The adsorption isotherm is consistent with the Freundlich adsorption isotherm. In addition, BEA imprinted cryogels are 9.5 times more selective against the template mol. BEA than bassiatin, which is the competitive agent. In the experimental materials used by the author, we found H-Trp-OMe.HCl(cas: 7524-52-9Safety of H-Trp-OMe.HCl)

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.Safety of H-Trp-OMe.HCl

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

Samsawat, Tipparat; Jaramornburapong, Chanjira; Phutdhawong, Weerachai; Phutdhawong, Waya S.; Taechowisan, Thongchai published their research in Journal of Applied Pharmaceutical Science in 2021. The article was titled 《Evaluating the effect of amine-geldanamycin hybrids on anticancer activity》.Recommanded Product: H-Trp-OMe.HCl The article contains the following contents:

Three new geldanamycin (GDM) derivatives, 17-(S)-2-amino-3-(1H-indol-3-ylpropan-1-ol)-17- demethoxygeldanamycin (2), 17-((S)-2-amino-3-phenylpropan-1-ol)-17-demethoxygeldanamycin (3), and 17-((S)-4- (2-amino-3-hydroxypropyl)phenol)-17-demethoxygeldanamycin (4), were synthesized by nucleophilic substitution of GDM (1). The binding ability of these compounds at the N-terminal domain of heat shock protein [Protein Data Bank (PDB) ID: 1OSF] derived from the PDB was analyzed by ligand-protein docking. Hydrogen-bonding interactions of compounds 2 and 3 were equal to those of 17-dimethylamino-ethylamino-17-demethoxygeldanamycin (17-DMAG), with binding energies of -98.33 and -122.41 kcal/mol, resp. The solubility of the synthesized compounds was ascertained. The solubilities of compounds 2, 3, and 4 in water were 5.571 mM, 1.963 mM, and 1.918 mM, higher than that of compound 1 by approx. 36.65, 12.91, and 12.62 times, resp. The cytotoxicity activity of the synthesized compounds was also evaluated against cancer cell lines using a tetrazolium-based colorimetric assay. These compounds showed high anticancer activity against human cervical carcinoma cells cells, with inhibitory concentration (IC50) values in the range of 19.36-45.66 μg/mL, which were better than that of compound 1, with IC50 values of 110.46 μg/mL. Compound 3 also exhibited cytotoxic activity against human hepatocellular carcinoma cells cells, with an IC50 value of 24.62 μg/mL. These compounds were less active against MDA-MB-231 cells, compared with compound 1. Compound 2 also showed weak cytotoxic activity on Vero and LLC-MK2 cells, with IC50 values of 229.19 and 330.58 μg/mL, resp. The predicted results indicated that these compounds have similar absorption, distribution, metabolism, excretion, and toxicity parameters as well as structures predictive of hepatotoxicity. The results showed that some of the synthesized compounds revealed selective cytotoxicity toward some cancer cells. Therefore, further studies on the synthesized compounds could be helpful in the treatment of some cancers. The experimental process involved the reaction of H-Trp-OMe.HCl(cas: 7524-52-9Recommanded Product: H-Trp-OMe.HCl)

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.Recommanded Product: H-Trp-OMe.HCl

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

《Conjugable A3 adenosine receptor antagonists for the development of functionalized ligands and their use in fluorescent probes》 was published in European Journal of Medicinal Chemistry in 2020. These research results belong to Federico, Stephanie; Margiotta, Enrico; Moro, Stefano; Kozma, Eszter; Gao, Zhan-Guo; Jacobson, Kenneth A.; Spalluto, Giampiero. Recommanded Product: tert-Butyl (5-aminopentyl)carbamate The article mentions the following:

Compounds able to simultaneously bind a biol. target and be conjugated to a second specific moiety are attractive tools for the development of multi-purpose ligands useful as multi-target ligands, receptor probes or drug delivery systems, with both therapeutic and diagnostic applications. The human A3 adenosine receptor is a G protein-coupled receptor involved in many physio-pathol. conditions, e.g. cancer and inflammation, thus representing a promising research target. In this work, two series of conjugable hA3AR antagonists, based on the pyrazolo[4,3-e]-1,2,4-triazolo[1,5-c]pyrimidine nucleus, were developed. The introduction of an aromatic ring at the 5 position of the scaffold, before (phenylacetamido moiety) or after (1,2,3-triazole obtained by click chem.) the conjugation is aimed to increase affinity and selectivity towards the hA3AR receptor. As expected, conjugable compounds showed good affinity towards the hA3AR. In order to prove their potential in the development of hA3AR ligands for different purposes, compounds were also functionalized with fluorescent probes. Unfortunately, conjugation decreased affinity and selectivity for the target as compared to the hA2AAR. Computational studies identified specific non-conserved residues of the extracellular loops which constitute a structural barrier able to discriminate between ligands, giving insights into the rational development of new highly selective ligands. After reading the article, we found that the author used tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3Recommanded Product: tert-Butyl (5-aminopentyl)carbamate)

Some of the reported applications of tert-Butyl (5-aminopentyl)carbamate(cas: 51644-96-3) include: synthesis of of a supermacrocycle that self-assemble to form organic nanotubes., preparation of water-soluble unsymmetrical sulforhodamine fluorophores from monobrominated sulfoxanthene dye, synthesis of functionalized porphyrins as biocompatible carrier system for photodynamic therapy (PDT).Recommanded Product: tert-Butyl (5-aminopentyl)carbamate

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

Westaway, Susan M.; Brown, Samantha L.; Conway, Elizabeth; Heightman, Tom D.; Johnson, Christopher N.; Lapsley, Kate; Macdonald, Gregor J.; MacPherson, David T.; Mitchell, Darren J.; Myatt, James W.; Seal, Jon T.; Stanway, Steven J.; Stemp, Geoffrey; Thompson, Mervyn; Celestini, Paolo; Colombo, Andrea; Consonni, Alessandra; Gagliardi, Stefania; Riccaboni, Mauro; Ronzoni, Silvano; Briggs, Michael A.; Matthews, Kim L.; Stevens, Alexander J.; Bolton, Victoria J.; Boyfield, Izzy; Jarvie, Emma M.; Stratton, Sharon C.; Sanger, Gareth J. published their research in Bioorganic & Medicinal Chemistry Letters on December 15 ,2008. The article was titled 《The discovery of biaryl carboxamides as novel small molecule agonists of the motilin receptor》.Application of 144291-47-4 The article contains the following contents:

Optimization of urea (5), identified from high throughput screening and subsequent array chem., has resulted in the identification of pyridine carboxamide (33, I) which is a potent motilin receptor agonist possessing favorable physicochem. and ADME profiles. Compound (33) has demonstrated prokinetic-like activity both in vitro and in vivo in the rabbit and therefore represents a promising novel small mol. motilin receptor agonist for further evaluation as a gastroprokinetic agent. In the experimental materials used by the author, we found Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4Application of 144291-47-4)

Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Application of 144291-47-4 Polyesters are important plastics, with monomers linked by ester moieties.

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

Thomas, Michael G.; Lawson, Chris; Allanson, Nigel M.; Leslie, Bruce W.; Bottomley, Joanna R.; McBride, Andrew; Olusanya, Oyinkan A. published an article on February 10 ,2003. The article was titled 《A series of 2(Z)-2-Benzylidene-6,7-dihydroxybenzofuran-3[2H]-ones as inhibitors of chorismate synthase》, and you may find the article in Bioorganic & Medicinal Chemistry Letters.Category: esters-buliding-blocks The information in the text is summarized as follows:

A series of 2(Z)-2-benzylidene-6,7-dihydroxybenzofuran-3[2H]-ones was identified as potent inhibitors of bacterial chorismate synthase. The 2′-hydroxy-4′-pentoxy analog 33 is a potent inhibitor of Streptococcus pneumoniae chorismate synthase. In the experimental materials used by the author, we found Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate(cas: 152942-06-8Category: esters-buliding-blocks)

Ethyl 4-(4-formyl-3-hydroxyphenoxy)butanoate(cas: 152942-06-8) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Category: esters-buliding-blocks Polyesters are important plastics, with monomers linked by ester moieties.

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

In 2019,Journal of the Brazilian Chemical Society included an article by Riatto, Valeria B.; Victor, Mauricio M.; Sousa, Jaqueline F.; Menegola, Carla. Reference of Diethyl 2-hydroxypentanedioate. The article was titled 《Biotechnological properties of sponges from Northeast Brazil: Cliona varians as a biocatalyst for enantioselective reduction of carbonyl compounds》. The information in the text is summarized as follows:

To research the potential ability of whole marine sponges to act as biocatalysts, this paper describes for the first time the employment of whole Cliona varians sponge in the stereoselective reduction of prochiral α-keto esters and isatin to the corresponding chiral alcs. The addition of D-fructose, D-glucose or sucrose remarkably increased the conversion ratios and stereoselectivities by this marine sponge. Furthermore, in the presence of D-glucose and D-maltose, the reduction of isatin by C. varians afforded the corresponding 3-hydroxyindolin-2-one with high conversions (85-90%) and good enantioselectivities (60-74%). These results showed that the marine sponge presents great potential to be used as biocatalyst for stereoselective reduction of carbonyl compounds After reading the article, we found that the author used Diethyl 2-hydroxypentanedioate(cas: 69134-53-8Reference of Diethyl 2-hydroxypentanedioate)

Diethyl 2-hydroxypentanedioate(cas: 69134-53-8) belongs to esters. Esters are more polar than ethers but less polar than alcohols. Reference of Diethyl 2-hydroxypentanedioate They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.

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

Fornarini, Simonetta published an article on February 3 ,1988. The article was titled 《Positive evidence for tetrahedral R’C(OR)3H+ intermediates in the gas phase》, and you may find the article in Journal of the American Chemical Society.Computed Properties of C9H5F5O2 The information in the text is summarized as follows:

Cationic alcoholysis of esters was studied in the gas phase at nearly atm. pressures to establish a bridge between the predominant addition-elimination mechanism typical of carboxylic acid derivatives in solution and the concerted alkyl- (or acyl-)group transfer prevailing in ICR studies at low pressure. Operation of the 1st mechanism, involving tetrahedral intermediates, was inferred using CD3OD and Me18OH in radiolytic and chem.-ionization experiments and, most conclusively, by the actual isolation of neutral ortho esters, obtained by trapping the intermediate with a highly basic, poorly nucleophilic amine. Thus, gas-phase experiments lend themselves to meaningful correlation with solution-chem. data only at sufficiently high pressure. The experimental process involved the reaction of Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4Computed Properties of C9H5F5O2)

Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market.Computed Properties of C9H5F5O2

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

Ousaka, Naoki; Endo, Takeshi published an article in 2021. The article was titled 《One-Pot Nonisocyanate Synthesis of Sequence-Controlled Poly(hydroxy urethane)s from a Bis(six-membered cyclic carbonate) and Two Different Diamines》, and you may find the article in Macromolecules (Washington, DC, United States).Quality Control of N-Boc-1,6-Diaminohexane The information in the text is summarized as follows:

Sequence-controlled synthetic polymers have received increasing interest because of their great potential to develop next-generation functional materials. Here, we report a facile synthesis of a sym. spiro bis(six-membered cyclic carbonate), 2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-dione (1), its reactivity, and a one-pot, nonisocyanate synthesis of sequence-controlled poly(hydroxy urethane)s (PHUs) from 1 with two different sym. diamines. The second-order rate constant for the ring-opening addition reaction of one of the two cyclic carbonates of 1 with 1-hexylamine is two orders of magnitude larger than that of the remaining one of the resulting intermediate due to a remarkable difference between their ring strain energies. This difference in the reactivity enables the selective formation of a diurethane-linked bis(six-membered cyclic carbonate) from the reaction of 1 with a diamine (0.5 equiv). The subsequent addition of a different diamine (0.5 equiv) to the same pot affords sequence-controlled PHUs with an ABAC sequence. The experimental process involved the reaction of N-Boc-1,6-Diaminohexane(cas: 51857-17-1Quality Control of N-Boc-1,6-Diaminohexane)

N-Boc-1,6-Diaminohexane(cas: 51857-17-1) is a compound useful in organic synthesis used in the preparation of mixed self-assembled monolayers (SAMs) that resist adsorption of proteins using the reaction of amines with a SAM that presents interchain carboxylic anhydride groupsQuality Control of N-Boc-1,6-Diaminohexane

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

《An Activity-Guided Map of Electrophile-Cysteine Interactions in Primary Human T Cells》 was written by Vinogradova, Ekaterina V.; Zhang, Xiaoyu; Remillard, David; Lazar, Daniel C.; Suciu, Radu M.; Wang, Yujia; Bianco, Giulia; Yamashita, Yu; Crowley, Vincent M.; Schafroth, Michael A.; Yokoyama, Minoru; Konrad, David B.; Lum, Kenneth M.; Simon, Gabriel M.; Kemper, Esther K.; Lazear, Michael R.; Yin, Sifei; Blewett, Megan M.; Dix, Melissa M.; Nguyen, Nhan; Shokhirev, Maxim N.; Chin, Emily N.; Lairson, Luke L.; Melillo, Bruno; Schreiber, Stuart L.; Forli, Stefano; Teijaro, John R.; Cravatt, Benjamin F.. HPLC of Formula: 7524-52-9 And the article was included in Cell (Cambridge, MA, United States) in 2020. The article conveys some information:

Electrophilic compounds originating from nature or chem. synthesis have profound effects on immune cells. These compounds are thought to act by cysteine modification to alter the functions of immune-relevant proteins; however, our understanding of electrophile-sensitive cysteines in the human immune proteome remains limited. Here, we present a global map of cysteines in primary human T cells that are susceptible to covalent modification by electrophilic small mols. More than 3,000 covalently liganded cysteines were found on functionally and structurally diverse proteins, including many that play fundamental roles in immunol. We further show that electrophilic compounds can impair T cell activation by distinct mechanisms involving the direct functional perturbation and/or degradation of proteins. Our findings reveal a rich content of ligandable cysteines in human T cells and point to electrophilic small mols. as a fertile source for chem. probes and ultimately therapeutics that modulate immunol. processes and their associated disorders. The results came from multiple reactions, including the reaction of H-Trp-OMe.HCl(cas: 7524-52-9HPLC of Formula: 7524-52-9)

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.HPLC of Formula: 7524-52-9

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