Month: December 2022

Bel’skii, V. E. published the artcileStructure and chemical shifts in phosphorus-31 NMR of phosphonic acid esters, Safety of Diethyltrichloromethylphosphonate, the publication is Zhurnal Obshchei Khimii (1972), 42(11), 2427-31, database is CAplus.

The induction constants σ* of R groups correlated linearly with the chem. shift of 31P in 37 RP(O)(OEt)2 (R = alkyl or substituted alkyl groups), provided that hyperconjugation effects were taken into account. The presence of unshared electron pairs in R at the C atom adjacent to the P destroyed the linear relationship; the same was true of R groups containing multiple bonds.

Zhurnal Obshchei Khimii published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Safety of Diethyltrichloromethylphosphonate.

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

Areephong, Jetsuda published the artcileOn/Off Photoswitching of the Electropolymerizability of Terthiophenes, Synthetic Route of 219537-97-0, the publication is Journal of the American Chemical Society (2008), 130(39), 12850-12851, database is CAplus and MEDLINE.

The polymerization of terthiophene to obtain an alkene bridged α,α-coupled sexithiophene polymer, was controlled by light; i.e., the electropolymerizability of the bis-terthiophene monomer is switched off and on upon illumination with UV and visible light, resp. The system comprises both bis-terthiophene and photochromic dithienylethene units. The presence of a light-switchable unit allows on-off switching of the electropolymerization of the monomer with light. The incorporation of dithienylethene in the backbone increases dramatically the homogeneity of the polymer formed (i.e., only sexithiophene units are formed). The films are robust and fully retain electrochromism as was demonstrated through cyclic voltammetry while spatial control (patterning) is readily achieved by applying simple optical masking techniques.

Journal of the American Chemical Society published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Synthetic Route of 219537-97-0.

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

Dreas, Agnieszka published the artcileDiscovery of indazole-pyridinone derivatives as a novel class of potent and selective MNK1/2 kinase inhibitors that protecting against endotoxin-induced septic shock, Quality Control of 939-99-1, the publication is European Journal of Medicinal Chemistry (2021), 113057, database is CAplus and MEDLINE.

The mitogen-activated protein kinase (MAPK)-interacting kinases 1 and 2 (MNKs 1/2) and their downstream target eIF4E, play a role in oncogenic transformation, progression and metastasis. These results provided rationale for development of first MNKs inhibitors, currently in clin. trials for cancer treatment. Inhibitors of the MNKs/eIF4E pathway are also proposed as treatment strategy for inflammatory conditions. Here we present results of optimization of indazole-pyridinone derived MNK1/2 inhibitors among which compounds I and II, selective and metabolically stable derivatives Both compounds decreased levels of eIF4E Ser206 phosphorylation (pSer209-eIF4E) in MOLM16 cell line. When administered in mice compounds I and II significantly improved survival rates of animals in the endotoxin LD challenge model, with concomitant reduction of proinflammatory cytokine levels – TNFα and IL-6 in serum. Identified MNK1/2 inhibitors represent a novel class of immunomodulatory compounds with a potential for the treatment of inflammatory diseases including sepsis.

European Journal of Medicinal Chemistry published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C8H6ClF3, Quality Control of 939-99-1.

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

Eckstein, Aleksandra published the artcileAuxin and chloroplast movements, Name: 3-Chloro-4-hydroxyphenylacetic acid, the publication is Physiologia Plantarum (2016), 156(3), 351-366, database is CAplus and MEDLINE.

Auxin is involved in a wide spectrum of physiol. processes in plants, including responses controlled by the blue light photoreceptors phototropins: phototropic bending and stomatal movement. However, the role of auxin in phototropin-mediated chloroplast movements has never been studied. To address this question we searched for potential interactions between auxin and the chloroplast movement signaling pathway using different exptl. approaches and two model plants, Arabidopsis thaliana and Nicotiana tabacum. We observed that the disturbance of auxin homeostasis by shoot decapitation caused a decrease in chloroplast movement parameters, which could be rescued by exogenous auxin application. In several cases, the impairment of polar auxin transport, by chem. inhibitors or in auxin carrier mutants, had a similar neg. effect on chloroplast movements. This inhibition was not correlated with changes in auxin levels. Chloroplast relocations were also affected by the antiauxin p-chlorophenoxyisobutyric acid and mutations in genes encoding some of the elements of the SCF^TIR1-Aux/IAA auxin receptor complex. The observed changes in chloroplast movement parameters are not prominent, which points to a modulatory role of auxin in this process. Taken together, the obtained results suggest that auxin acts indirectly to regulate chloroplast movements, presumably by regulating gene expression via the SCF^TIR1-Aux/IAA-ARF pathway. Auxin does not seem to be involved in controlling the expression of phototropins.

Physiologia Plantarum 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, Name: 3-Chloro-4-hydroxyphenylacetic acid.

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

Faas, Henryk M. published the artcileAccelerated 19F·MRI detection of matrix metalloproteinase-2/-9 through responsive deactivation of paramagnetic relaxation enhancement, Application In Synthesis of 42074-68-0, the publication is Contrast Media & Molecular Imaging (2019), 4826520/1-4826520/13, database is CAplus and MEDLINE.

Paramagnetic gadolinium ions (GdIII), complexed within DOTA-based chelates, have become useful tools to increase the magnetic resonance imaging (MRI) contrast in tissues of interest. Recently, “on/off” probes serving as 19F·MRI biosensors for target enzymes have emerged that utilize the increase in transverse (T*2 or T2) relaxation times upon cleavage of the paramagnetic GdIII center. Mol. 19F·MRI has the advantage of high specificity due to the lack of background signal but suffers from low signal intensity that leads to low spatial resolution and long recording times. In this work, an “on/off” probe concept is introduced that utilizes responsive deactivation of paramagnetic relaxation enhancement (PRE) to generate 19F longitudinal (T1) relaxation contrast for accelerated mol. MRI. The probe concept is applied to matrix metalloproteinases (MMPs), a class of enzymes linked with many inflammatory diseases and cancer that modify bioactive extracellular substrates. The presence of these biomarkers in extracellular space makes MMPs an accessible target for responsive PRE deactivation probes. Responsive PRE deactivation in a 19F biosensor probe, selective for MMP-2 and MMP-9, is shown to enable mol. MRI contrast at significantly reduced exptl. times compared to previous methods. PRE deactivation was caused by MMP through cleavage of a protease substrate that served as a linker between the fluorine-containing moiety and a paramagnetic GdIII-bound DOTA complex. Ultrashort echo time (UTE) MRI and, alternatively, short echo times in standard gradient echo (GE) MRI were employed to cope with the fast 19F transverse relaxation of the PRE active probe in its “on-state.” Upon responsive PRE deactivation, the 19F·MRI signal from the “off-state” probe diminished, thereby indicating the presence of the target enzyme through the associated neg. MRI contrast. Null point 1H·MRI, obtainable within a short time course, was employed to identify false-pos. 19F·MRI responses caused by dilution of the contrast agent.

Contrast Media & Molecular Imaging 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, Application In Synthesis of 42074-68-0.

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

Adams, H. Jack published the artcilePrimary local anesthetic testing and acute toxicity of N,N’-disubstituted 2,3-diamino-2′,6′-propionoxylidides, SDS of cas: 18791-02-1, the publication is Journal of Pharmaceutical Sciences (1973), 62(10), 1677-9, database is CAplus and MEDLINE.

The local anesthetic activity of the 8 N,N’-disubstituted-2,3-diamino-2′,6′-propionoxylidides (I) and 1-tert-butyl-2-aziridinecarboxy-2′,6′-xylidide (II) [50603-33-3] which were prepared fell between that of lidocaine-HCl [73-78-9] and tetracaine-HCl [136-47-0]. None of the compounds possessed the long duration of tetracaine in the guinea pig wheal. All the compds were more toxic than tetracaine i.p. in the mouse and except for II they were less irritating than tetracaine in the rabbit intradermal wheal.

Journal of Pharmaceutical Sciences 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, SDS of cas: 18791-02-1.

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

Saini, Parul published the artcileExternal Catalyst-Free Oxidation of Benzyl Halides to Benzoic Acids Using NaOH/TBHP in Water, Recommanded Product: 1-(Chloromethyl)-4-(trifluoromethyl)benzene, the publication is Asian Journal of Organic Chemistry (2021), 10(9), 2355-2359, database is CAplus.

An efficient and metal-free methodol. for the oxidation of benzyl halides to benzoic acids using an inexpensive and green oxidant (TBHP) in aqueous basic medium has been developed. This protocol offers an excellent way to avoid adding catalysts and involves the use of an in-situ generated halide ion as catalyst. It is also the first report on the oxidation of benzyl iodides to benzoic acids. A series of carboxylic acids were prepared from benzyl halides in high yields under mild reaction conditions by this method which does not require chromatog. purification Gram scale reactions for the synthesis of the carboxylic acids in good yields have been successfully carried out using benzyl chloride, bromide and iodide. As an industrial application, the synthesis of a key monomer used for the synthesis of polyethylene terephthalate (PET), i. e., terephthalic acid (PTA), has also been accomplished in good yields.

Asian Journal of Organic Chemistry published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C8H6ClF3, Recommanded Product: 1-(Chloromethyl)-4-(trifluoromethyl)benzene.

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

Makane, Vitthal B. published the artcileSynthesis and evaluation of α-aminoacyl amides as antitubercular agents effective on drug resistant tuberculosis, Name: 2-Chloroisonicotinic acid, the publication is European Journal of Medicinal Chemistry (2019), 665-677, database is CAplus and MEDLINE.

Synthesis, SAR and evaluation of α-aminoacyl amides R¹C(O)N(R²)CH(R³)C(O)NHR⁴ [R¹ = 2-pyrrolyl, 2-furyl, 2-thienyl, etc.; R² = Ph, 4-MeC₆H₄, 2-HOC₆H₄, etc.; R³ = Ph, 3-ClC₆H₄, 4-MeOC₆H₄, etc.; R⁴ = t-Bu, cyclohexyl, Bn, 2-naphthyl] as antitubercular agents were reported via Ugi reaction of benzaldehydes, isocyanides, anilines and carboxylic acids. The systematic medicinal chem. approach led to identification of optimal substitutions required for the activity. Compound R¹C(O)N(R²)CH(R³)C(O)NHR⁴ [R¹ = 2,4-di-methylthiazol-5-yl; R² = 2,4-di-MeC₆H₃; R³ = 3-pyridyl; R⁴ = cyclohexyl] was identified as antitubercular lead with drug like properties. Further, R¹C(O)N(R²)CH(R³)C(O)NHR⁴ [R¹ = 2,4-di-methylthiazol-5-yl; R² = 2,4-di-MeC₆H₃; R³ = 3-pyridyl; R⁴ = cyclohexyl] selectively inhibited M. tuberculosis H37Rv with MIC value of 0.78 μM and was found to be non-toxic to CHO-K1 cells. The lead compound inhibited multi drug resistant and Pre-Extensively drug resistant strains of Mycobacterium at 2 μg/mL and 8 μg/mL resp.

European Journal of Medicinal Chemistry published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, Name: 2-Chloroisonicotinic acid.

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

Nagaraju, Tumula published the artcilePhI(OAc)₂-Mediated Regioselective Synthesis of 5-Guanidino-1,2,4-thiadiazoles and 1,2,4-Triazolo[1,5-a]pyridines via Oxidative N-S and N-N Bond Formation, HPLC of Formula: 3696-23-9, the publication is Synthesis (2019), 51(19), 3600-3610, database is CAplus.

An effective and expeditious approach for the construction of biol. important 5-guanidino-1,2,4-thiadiazoles I [R¹ = n-Pr, Ph, 3-ClC₆H₄, etc.; R² = Ph, 2-MeOC₆H₄, 4-ClC₆H₄, etc.] and 1,2,4-triazolo[1,5- a]pyridine derivatives II [R³ = H, 7-Me, 7-Cl; R⁴ = Ph, 2-thienyl, 3-O₂NC₆H₄, etc.] were developed with high efficiency and excellent regioselectivity. This new protocol involved the phenyliodine(III) diacetate-mediated oxidative cyclization of thioureas/2-aminopyridines and imidates via N-S and N-N bond formation at ambient temp to afford target compounds I and II resp.

Synthesis 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, HPLC of Formula: 3696-23-9.

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