Month: December 2022

Adamiak, Lisa published the artcilePeptide Brush Polymers and Nanoparticles with Enzyme-Regulated Structure and Charge for Inducing or Evading Macrophage Cell Uptake, SDS of cas: 6249-56-5, the publication is ACS Nano (2017), 11(10), 9877-9888, database is CAplus and MEDLINE.

Cellular uptake by macrophages and ensuing clearance by the mononuclear phagocyte system stands as a significant biol. barrier for nanoparticle therapeutics. While there is a growing body of work investigating the design principles essential for imparting nanomaterials with long-circulating characteristics and macrophage evasion, there is still a widespread need for examining stimuli-responsive systems, particularly well-characterized soft materials, which differ in their physiochem. properties prior to and after an applied stimulus. In this work, we describe the synthesis and formulation of polymeric nanoparticles (NPs) and soluble homopolymers (Ps) encoded with multiple copies of a peptide substrate for proteases. We examined the macrophage cell uptake of these materials, which vary in their peptide charge and conjugation (via the N- or C-terminus). Following treatment with a model protease, thermolysin, the NPs and Ps undergo changes in their morphol. and charge. After proteolysis, zwitterionic NPs showed significant cellular uptake, with the C-terminus NP displaying higher internalization than its N-terminus analog. Enzyme-cleaved homopolymers generally avoided assembly and uptake, though at higher concentrations, enzyme-cleaved N-terminus homopolymers assembled into discrete cylindrical structures, whereas C-terminus homopolymers remained dispersed. Overall, these studies highlight that maintaining control over NP and polymer design parameters can lead to well-defined biol. responses.

ACS Nano published new progress about 6249-56-5. 6249-56-5 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst,Inhibitor,Natural product, name is 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, and the molecular formula is C7H16ClNO2, SDS of cas: 6249-56-5.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Binisti, Carine published the artcileStructure-activity relationships in platelet activating factor. 9. From PAF-antagonism to PLA₂ inhibition, Synthetic Route of 18791-02-1, the publication is Journal of Lipid Mediators and Cell Signalling (1997), 15(2), 125-144, database is CAplus and MEDLINE.

Novel acylated piperazines substituted at the 2-position by C_4-17 alkyl groups, analogs of known PAF-antagonists, were prepared by standard methods. These new compounds inhibited various secretory PLA₂s, with IC₅₀‘s in the μmol range. SAR evaluation showed that inhibition of secretory PLA₂ depends on the length of the alkyl chain, with an optimum for 13 to 17 carbons, which is in agreement with X-ray crystallog. and NMR (NMR) studies on the active site of PLA₂s, and that a free nitrogen on the piperazine ring is required to ensure a good inhibitory potency.

Journal of Lipid Mediators and Cell Signalling published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C3H3Br2ClO, Synthetic Route of 18791-02-1.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Khodade, Vinayak S. published the artcileDevelopment of S-Substituted Thioisothioureas as Efficient Hydropersulfide Precursors, Product Details of C7H7ClN2S, the publication is Journal of the American Chemical Society (2018), 140(50), 17333-17337, database is CAplus and MEDLINE.

Because of their inherent instability, hydropersulfides (RSSH) must be generated in situ using precursors, but very few physiol. useful RSSH precursors have been developed to date. In this work, we report the design, synthesis, and evaluation of novel S-substituted thioisothioureas as RSSH precursors. These water-soluble precursors show efficient and controllable release of RSSH under physiol. conditions.

Journal of the American Chemical Society published new progress about 3696-23-9. 3696-23-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Thiourea,Amine,Benzene,Amide, name is 1-(4-Chlorophenyl)thiourea, and the molecular formula is C7H7ClN2S, Product Details of C7H7ClN2S.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Ohmura, Toshimichi published the artcileCatalytic Functionalization of Methyl Group on Silicon: Iridium-Catalyzed C(sp³)-H Borylation of Methylchlorosilanes, Category: chlorides-buliding-blocks, the publication is Journal of the American Chemical Society (2012), 134(42), 17416-17419, database is CAplus and MEDLINE.

A Me group of methylchlorosilanes undergoes C-H borylation in an iridium-catalyzed reaction with bis(pinacolato)diboron in cyclohexane at 80°, giving (borylmethyl)chlorosilanes selectively. For example, reaction of Me₃SiCl with B₂(pin)₂ in the presence of [Ir(OMe)(COD)]₂ and 3,4,7,8-Me₄phen followed by addition of ⁱPrOH gives ⁱPrOSiMe₂CH₂B(pin) in 93% yield.

Journal of the American Chemical Society published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Aghcheli, Ayoub published the artcileDesign, synthesis, and biological evaluation of 1-(5-(benzylthio)-1,3,4-thiadiazol-2-yl)-3-phenylurea derivatives as anticancer agents, Recommanded Product: 3-Chlorobenzylchloride, the publication is Medicinal Chemistry Research, database is CAplus.

Abstract: A novel series of 1-(5-(benzylthio)-1,3,4-thiadiazol-2-yl)-3-phenylurea derivatives (5a-l) were designed and synthesized as sorafenib analogs. The in vitro cytotoxicity effects of synthesized compounds were evaluated against four different human cancer cells including MCF-7, HepG2, A549, and HeLa cell lines. The biol. results showed that most of the compounds significantly prevented the proliferation of tested cancer cells. In particular, 2-F, 4-Cl, and 2,6-diF substituted derivatives (5d, 5g, and 5k) showed promising activities, especially against Hela cancer cells (IC₅₀ = 0.37, 0.73 and 0.95 μM, resp.) which were significantly more potent than sorafenib as the reference drug (IC₅₀ = 7.91 μM). Flow cytometry anal. revealed that the prototype compounds (5d, 5g, and 5k) significantly induced apoptotic cell death in HeLa cancer cells and blocked the cell cycle at the sub-G1 phase. Moreover, in silico docking study confirmed the binding of the prototype compound to the active site of VEGFR-2.

Medicinal Chemistry Research published new progress about 620-20-2. 620-20-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 3-Chlorobenzylchloride, and the molecular formula is C7H6Cl2, Recommanded Product: 3-Chlorobenzylchloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Jones, Gurnos published the artcileReactions between 4-pyrimidones and sulfur ylides: cyclopropanation and ring opening reactions, HPLC of Formula: 5034-06-0, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1983), 2645-8, database is CAplus.

Reaction of pyrimidones I (R = H, R¹ = Me, CH₂Ph) with C^–H₂S⁺(O)Me₂ (II) gave the corresponding (Z)-R¹NHCOCH:CHNHCHO and cyclopropapyrimidones III in 32, 24, 8, and 27% yield, resp. Analogous reaction of I (R = SMe, R¹ = Me) (IV) with II in DMSO gave 7.5% III (R = SMe, R¹ = Me) and iodide V. Under certain conditions 41% methylide VI was obtained from IV and II.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, HPLC of Formula: 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lu, Guo-Liang published the artcileSynthesis and structure-activity relationships for tetrahydroisoquinoline-based inhibitors of Mycobacterium tuberculosis, Computed Properties of 209919-30-2, the publication is Bioorganic & Medicinal Chemistry (2020), 28(22), 115784, database is CAplus and MEDLINE.

A series of 5,8-disubstituted tetrahydroisoquinolines e.g., 2-((5-(4-chlorophenyl)pyridin-2-yl)methyl)-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydroisoquinoline were shown to be effective inhibitors of M. tb in culture and modest inhibitors of M. tb ATP synthase. There was a broad general trend of improved potency with higher lipophilicity. Large substituents (e.g., Bn) at the tetrahydroquinoline 5-position were well-tolerated, while N-methylpiperazine was the preferred 8-substituent. Structure-activity relationships for 7-linked side chains showed that the nature of the 7-linking group was important; -CO- and -COCH₂– linkers were less effective than -CH₂– or -CONH- ones. This suggests that the positioning of a terminal aromatic ring is important for target binding. Selected compounds showed much faster rates of microsomal clearance than the clin. ATP synthase inhibitor bedaquiline, and modest inhibition of mycobacterial ATP synthase.

Bioorganic & Medicinal Chemistry published new progress about 209919-30-2. 209919-30-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is 4-Chloro-2-methylphenylboronic acid, and the molecular formula is C7H8BClO2, Computed Properties of 209919-30-2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Hashimura, Kazuya published the artcileA stereocontrolled route to both enantiomers of the necine base dihydroxyheliotridane via intramolecular 1,3-dipolar addition using the same chiral precursor, Related Products of chlorides-buliding-blocks, the publication is Journal of the Chemical Society, Chemical Communications (1995), 2291-2, database is CAplus.

Diastereofacial selectivity in an enantiospecific intramol. 1,3-dipolar addition is controlled by adjusting the size of the tether between the dipole and the dipolarophile to give 2,3-disubstituted pyrrolidines enantiomeric with respect to the newly generated stereogenic 2,3-centers depending on the tether size; this leads to stereocontrolled synthesis of the (-)-(I) and (+)-enantiomers of the necine base dihydroxyheliotridane from chiral O-benzylglycidol.

Journal of the Chemical Society, Chemical Communications published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C3H3Br2ClO, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Imanishi, Masashi published the artcileDiscovery of a Novel Series of Biphenyl Benzoic Acid Derivatives as Potent and Selective Human β₃-Adrenergic Receptor Agonists with Good Oral Bioavailability. Part I, Category: chlorides-buliding-blocks, the publication is Journal of Medicinal Chemistry (2008), 51(6), 1925-1944, database is CAplus and MEDLINE.

A novel class of biphenyl analogs containing a benzoic acid moiety based on lead compound I have been identified as potent and selective human β₃ adrenergic receptor (β₃-AR) agonists with good oral bioavailability and long plasma half-life. After further substituent effects were investigated at the terminal Ph ring of lead compound I, it has been discovered that more lipophilic substitution at the R position improved potency and selectivity. As a result of these studies, II and III were identified as the leading candidates with the best balance of potency, selectivity, and pharmacokinetic profiles. In addition, compounds II and III were evaluated to be efficacious for a carbachol-induced increase of intravesical pressure, such as an overactive bladder model in anesthetized dogs. This represents the first demonstrated result dealing with β₃-AR agonists.

Journal of Medicinal Chemistry published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C8H7ClO3, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Cook, A. Gilbert published the artcileThe blue bottle experiment revisited. How Blue? How Sweet?, COA of Formula: C22H23ClN4, the publication is Journal of Chemical Education (1994), 71(2), 160-1, database is CAplus.

The “Blue Bottle” experiment was first popularized by Campbell. The reaction consists of a flask about half full of a colorless liquid that, when shaken, turns blue. When left to stand the liquid turns colorless again. The cyclic process – being shaken, turning blue, being left to stand, and turning colorless – can be repeated many times. By making a series of guided observations with this simple but colorful system, the student can determine a rate law and a plausible mechanism for the reaction without ever knowing the contents of the flask. The activation energy of the reaction can also be measured by making observations at various temperatures This popular experiment has been carried out by general chem. students at Valparaiso University since 1963 with great success.

Journal of Chemical Education published new progress about 4569-86-2. 4569-86-2 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride, and the molecular formula is C22H23ClN4, COA of Formula: C22H23ClN4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics