Month: December 2022

Jeong, Hyeri published the artcileEfficient Synthesis and Characterization of Monoprotected Symmetrical Poly(Ethylene Glycol) Diamine, HPLC of Formula: 42074-68-0, the publication is Bulletin of the Korean Chemical Society (2018), 39(1), 29-32, database is CAplus.

Solid-phase synthesis of monoprotected poly(ethylene glycol) (PEG) diamine is demonstrated. 2-Chlorotrityl chloride (2-CTC) resin was used as a solid support for inducing monofunctionalization using excess PEG diamine. Fmoc-monoprotected PEG was prepared from 2-CTC resin and fully characterized by high-performance liquid chromatog. and electrospray ionization mass spectrometry. We envision that this strategy will provide an efficient method of preparing various kinds of heterobifunctional PEG mols. without a need for further purification steps.

Bulletin of the Korean Chemical Society published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, HPLC of Formula: 42074-68-0.

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

Ohya, Kazumi published the artcilePyrolysis reaction of carpronium chloride and its structurally related compounds. 1. Electronic and steric effects on the orientation of the pyrolysis reaction, Application of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride, the publication is Organic Mass Spectrometry (1983), 18(1), 27-33, database is CAplus.

The pyrolysis reaction of carpronium chloride [MeO₂C(CH₂)₃N⁺Me₃ Cl^–] and the structurally related compounds RO₂C(CH₂)_nN⁺Me₃ Cl^– (n = 2, 4, R = Me, Et, CHMe₂; n = 3, R = H, Et, CHMe₂), were studied by gas chromatog.-mass spectroscopy. The reaction modes of these ammonium compounds are dependent on the number of skeletal methylene groups and on the length of the carbon chain of the ester group. These phenomena were interpreted in terms of electronic and steric contributions for the ionic elimination reaction. The electronic and steric effects on the orientation of the reaction were discussed on the basis of the at. population calculated by the CNDO/2 method.

Organic Mass Spectrometry 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, Application of 3-Carboxy-N,N,N-trimethylpropan-1-aminium chloride.

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

Ohya, Kazumi published the artcileIntermolecular methyl transfer on pyrolysis of carpronium chloride, HPLC of Formula: 6249-56-5, the publication is Organic Mass Spectrometry (1979), 14(2), 61-5, database is CAplus.

Me transfer occurring in the formation of Me₂N(CH₂)₃CO₂Me (I) by pyrolysis of Me₃N⁺(CH₂)₃CO₂R Cl^– (II; R = Me) was examined using pyrolysis gas chromatog.-mass spectrometry of I and II (R = H, Me, Et, CHMe₂) and D labeling studies. Characteristic mol. ion peaks in the mass spectra of I and its deuterated analogs indicated intermol. Me transfer during pyrolysis of II (R = Me) to form I in which the Me group in the methoxycarbonyl group is replaced by an Me from the Me₃N group. The mechanism presented involves the bimol. reaction between zwitterionic intermediates formed by ionic O-demethylation of II (R = Me).

Organic Mass Spectrometry 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, HPLC of Formula: 6249-56-5.

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

Kodama, Susumu published the artcileAssociation between in vitro nuclear receptor-activating profiles of chemical compounds and their in vivo hepatotoxicity in rats, Application In Synthesis of 637-07-0, the publication is Journal of Toxicological Sciences (2021), 46(12), 569-587, database is CAplus.

The liver plays critical roles to maintain homeostasis of living organisms and is also a major target organ of chem. toxicity. Meanwhile, nuclear receptors (NRs) are known to regulate major liver functions and also as a critical target for hepatotoxic compounds In this study, we established mammalian one-hybrid assay systems for five rat-derived NRs, namely PXR, PPARα, LXRα, FXR and RXRα, and evaluated a total of 326 compounds for their NR-activating profiles. Then, we assessed the association between their NR-activating profile and hepatotoxic endpoints in repeated-dose toxicity data of male rats from Hazard Evaluation Support System. In the in vitro cell-based assays, 68, 38, 20, 17 and 17 compounds were identified as positives for PXR, PPARα, LXRα, FXR and RXRα, resp. The association analyses demonstrated that the PXR-pos. compounds showed high frequency of endpoints related to liver hypertrophy, such as centrilobular hepatocellular hypertrophy, suggesting that PXR activation is involved in chem.-induced liver hypertrophy in rats. It is intriguing to note that the PXR-pos. compounds also showed statistically significant associations with both prolonged activated partial thromboplastin time and prolonged prothrombin time, suggesting a possible involvement of PXR in the regulation of blood clotting factors. Collectively, our approach may be useful for discovering new functions of NRs as well as understanding the complex mechanism for hepatotoxicity caused by chem. compounds

Journal of Toxicological Sciences published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C12H15ClO3, Application In Synthesis of 637-07-0.

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

Lu, Xu published the artcileHydrogen Bond-Accelerated meta-Selective C-H Borylation of Aromatic Compounds and Expression of Functional Group and Substrate Specificities, Safety of Methyl 3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, the publication is ACS Catalysis (2019), 9(3), 1705-1709, database is CAplus.

Meta-selective C-H borylation of aromatic compounds was accelerated when using urea moiety-containing bipyridine-type ligands unlike in cases involving a bipyridine-type ligand without the urea moiety. The acceleration was due to the recognition and capture of the aromatic substrates by the urea moiety of the ligand by H bonding. The acceleration was further enhanced by modifying the electronic and steric properties of the ligand. The functional group and substrate specificities were also observed using the urea moiety-containing ligands.

ACS Catalysis published new progress about 408492-29-5. 408492-29-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronate Esters,Boronic acid and ester,, name is Methyl 3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, and the molecular formula is C14H18BClO4, Safety of Methyl 3-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate.

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

Cheng, Xinlai published the artcileEthyl 2-((4-Chlorophenyl)amino)thiazole-4-carboxylate and Derivatives Are Potent Inducers of Oct3/4, Synthetic Route of 3696-23-9, the publication is Journal of Medicinal Chemistry (2015), 58(15), 5742-5750, database is CAplus and MEDLINE.

The octamer-binding transcription factor 4 (Oct3/4) is a master gene in the transcriptional regulatory network of pluripotent cells. Repression of Oct3/4 in embryonic stem cells (ESCs) is associated with cell differentiation and loss of pluripotency, whereas forced overexpression in cooperation with other transcriptional factors, such as Nanog, Sox2, and Lin28, can reprogram somatic cells back into pluripotent cells, termed induced pluripotent stem cells (iPSCs). However, random integration and potential tumorigenic transformation caused by viral transduction limit the clin. application of iPSCs. By performing a cell-based high throughput screening (HTS) campaign, the authors identified several potential small mols. as inducers of Oct3/4 expression. Here the authors report a lead structure Et 2-((4-chlorophenyl)amino)-thiazole-4-carboxylate, termed O4I2, showing high activity in enforcing Oct3/4 expression. On the basis of chem. expansion, the authors further identified derivatives having increased activities toward Oct3/4 induction. Thus, O4I2 and its derivatives should provide a new class of small mols. suitable for iPSC generation.

Journal of Medicinal Chemistry 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, Synthetic Route of 3696-23-9.

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

Otsuka, Shinya published the artcileSynthesis of 4-aryl- and 4-acyl-1,3-dithiole-2-thiones via deprotonative zincation of 1,3-dithiole-2-thione, COA of Formula: C51H42ClNOP2Pd, the publication is Heteroatom Chemistry (2018), 29(3), n/a, database is CAplus.

Deprotonative zincation of 1,3-dithiole-2-thione at the 4-position was developed. Addition of lithium diisopropylamide to a THF solution of 1,3-dithiole-2-thione containing ZnI₂ and LiI generated the corresponding organozinc species. After this zincation, various aryl and acyl groups were installed at the 4-position by Pd-catalyzed cross-coupling reaction with aryl iodides and Cu-catalyzed acylation with acyl chlorides, resp.

Heteroatom Chemistry published new progress about 1375325-77-1. 1375325-77-1 belongs to chlorides-buliding-blocks, auxiliary class Palladium, name is Chloro[(4,5-bis(diphenylphosphino)-9,9-dimethylxanthene)-2-(2-amino-1,1-biphenyl)]palladium(ii), and the molecular formula is C51H42ClNOP2Pd, COA of Formula: C51H42ClNOP2Pd.

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

Stevenson, Graeme I. published the artcileSolid-phase synthesis of Biotin-S-Farnesyl-L-Cysteine, a surrogate substrate for isoprenylcysteine Carboxylmethyltransferase (ICMT), SDS of cas: 42074-68-0, the publication is Bioorganic & Medicinal Chemistry Letters (2013), 23(20), 5671-5673, database is CAplus and MEDLINE.

Inhibition of isoprenylcysteine carboxylmethyltransferase (ICMT) is of particular interest as a potential target for the development of cancer chemotherapeutic agents. Screening for inhibitors of ICMT utilizes a scintillation proximity assay (SPA) in which biotin-S-farnesyl-L-cysteine (BFC) acts as a surrogate substrate. A solid-phase synthesis protocol for the preparation of BFC using 2-chlorotrityl chloride resin as a solid support has been developed to provide sufficient supply of BFC for high throughput screening (HTS) and subsequent chem. campaigns to target inhibitors of ICMT. The BFC prepared by this method can be produced quickly on large scale and is stable when stored at -20° as a solid, in solution, or on the resin.

Bioorganic & Medicinal Chemistry Letters published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C7H13NO2, SDS of cas: 42074-68-0.

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

Kornecook, Thomas J. published the artcilePharmacologic characterization of AMG8379, a potent and selective small molecule sulfonamide antagonist of the voltage-gated sodium channel NaV1.7, Quality Control of 960388-56-1, the publication is Journal of Pharmacology and Experimental Therapeutics (2017), 362(1), 146-160, database is CAplus and MEDLINE.

Potent and selective antagonists of the voltage-gated sodium channel NaV1.7 represent a promising avenue for the development of new chronic pain therapies. We generated a small mol. atropisomer quinolone sulfonamide antagonist AMG8379 and a less active enantiomer AMG8380. Here we show that AMG8379 potently blocks human NaV1.7 channels with an IC50 of 8.5 nM and endogenous tetrodotoxin (TTX)-sensitive sodium channels in dorsal root ganglion (DRG) neurons with an IC50 of 3.1 nM in whole-cell patch clamp electrophysiol. assays using a voltage protocol that interrogates channels in a partially inactivated state. AMG8379 was 100- to 1000-fold selective over other NaV family members, including NaV1.4 expressed in muscle and NaV1.5 expressed in the heart, as well as TTX-resistant NaV channels in DRG neurons. Using an ex vivo mouse skin-nerve preparation, AMG8379 blocked mech. induced action potential firing in C-fibers in both a time-dependent and dose-dependent manner. AMG8379 similarly reduced the frequency of thermally induced C-fiber spiking, whereas AMG8380 affected neither mech. nor thermal responses. In vivo target engagement of AMG8379 in mice was evaluated in multiple NaV1.7-dependent behavioral endpoints. AMG8379 dose-dependently inhibited intradermal histamine-induced scratching and intraplantar capsaicin-induced licking, and reversed UVB radiation skin burn-induced thermal hyperalgesia; notably, behavioral effects were not observed with AMG8380 at similar plasma exposure levels. AMG8379 is a potent and selective NaV1.7 inhibitor that blocks sodium current in heterologous cells as well as DRG neurons, inhibits action potential firing in peripheral nerve fibers, and exhibits pharmacodynamic effects in translatable models of both itch and pain.

Journal of Pharmacology and Experimental Therapeutics published new progress about 960388-56-1. 960388-56-1 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Phenol,Boronate Esters,Boronic Acids,Boronic acid and ester,Boronate Esters, name is 3-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and the molecular formula is C12H16BClO3, Quality Control of 960388-56-1.

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

Kornecook, Thomas J. published the artcilePharmacologic characterization of AMG8379, a potent and selective small molecule sulfonamide antagonist of the voltage-gated sodium channel NaV1.7, HPLC of Formula: 929626-16-4, the publication is Journal of Pharmacology and Experimental Therapeutics (2017), 362(1), 146-160, database is CAplus and MEDLINE.

Potent and selective antagonists of the voltage-gated sodium channel NaV1.7 represent a promising avenue for the development of new chronic pain therapies. We generated a small mol. atropisomer quinolone sulfonamide antagonist AMG8379 and a less active enantiomer AMG8380. Here we show that AMG8379 potently blocks human NaV1.7 channels with an IC50 of 8.5 nM and endogenous tetrodotoxin (TTX)-sensitive sodium channels in dorsal root ganglion (DRG) neurons with an IC50 of 3.1 nM in whole-cell patch clamp electrophysiol. assays using a voltage protocol that interrogates channels in a partially inactivated state. AMG8379 was 100- to 1000-fold selective over other NaV family members, including NaV1.4 expressed in muscle and NaV1.5 expressed in the heart, as well as TTX-resistant NaV channels in DRG neurons. Using an ex vivo mouse skin-nerve preparation, AMG8379 blocked mech. induced action potential firing in C-fibers in both a time-dependent and dose-dependent manner. AMG8379 similarly reduced the frequency of thermally induced C-fiber spiking, whereas AMG8380 affected neither mech. nor thermal responses. In vivo target engagement of AMG8379 in mice was evaluated in multiple NaV1.7-dependent behavioral endpoints. AMG8379 dose-dependently inhibited intradermal histamine-induced scratching and intraplantar capsaicin-induced licking, and reversed UVB radiation skin burn-induced thermal hyperalgesia; notably, behavioral effects were not observed with AMG8380 at similar plasma exposure levels. AMG8379 is a potent and selective NaV1.7 inhibitor that blocks sodium current in heterologous cells as well as DRG neurons, inhibits action potential firing in peripheral nerve fibers, and exhibits pharmacodynamic effects in translatable models of both itch and pain.

Journal of Pharmacology and Experimental Therapeutics published new progress about 929626-16-4. 929626-16-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronate Esters, name is 2-(3-Chloro-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C13H18BClO3, HPLC of Formula: 929626-16-4.

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