Month: December 2022

Kajanus, Johan published the artcilePotassium channel blocking 1,2-bis(aryl)ethane-1,2-diamines active as antiarrhythmic agents, Name: (R)-Oxiran-2-ylmethanol, the publication is Bioorganic & Medicinal Chemistry Letters (2019), 29(10), 1241-1245, database is CAplus and MEDLINE.

Herein, synthesis and optimization of a novel series of 1,2-diarylethane-1,2-diamines with selectivity for Kv1.5 over other potassium ion channels is presented. The effective refractory period in the right atrium (RAERP) in a rabbit PD model was investigated for a selection of potent and selective compounds with balanced DMPK properties. The most advanced compound I showed nanomolar potency in blocking Kv1.5 in human atrial myocytes and based on the PD data, the estimated dose to man is 700 mg/day. As previously reported, compound I efficiently converted AF to sinus rhythm in a dog disease model.

Bioorganic & Medicinal Chemistry Letters published new progress about 57044-25-4. 57044-25-4 belongs to alcohols-buliding-blocks, auxiliary class Epoxides,Chiral,Aliphatic hydrocarbon chain,Alcohol, name is (R)-Oxiran-2-ylmethanol, and the molecular formula is C3H6O2, Name: (R)-Oxiran-2-ylmethanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Brandi, Francesco published the artcileControlled lignosulfonate depolymerization via solvothermal fragmentation coupled with catalytic hydrogenolysis/hydrogenation in a continuous flow reactor, Synthetic Route of 645-56-7, the publication is Green Chemistry (2021), 23(24), 9894-9905, database is CAplus.

Sodium lignosulfonate (LS) was valorized to low mol. weight (M_w) fractions by combining solvothermal (SF) and catalytic hydrogenolysis/hydrogenation fragmentation (SHF) in a continuous flow system. This was achieved in either alc./H₂O (EtOH/H₂O or MeOH/H₂O) or H₂O as a solvent and Ni on nitrogen-doped carbon as a catalyst. The tunability according to the temperature of both SF and catalytic SHF of LS has been sep. investigated at 150°C, 200°C, and 250°C. In SF, the minimal M_w was 2994 g mol^-1 at 250°C with a dispersity (D) of 5.3 using MeOH/H₂O. In catalytic SHF using MeOH/H₂O, extremely low M_w was found (433 mg gLS^-1) with a D of 1.2 combined with 34 mg gLS^-1. The monomer yield was improved to 42 mg gLS^-1 using dual catalytic beds. These results provide direct evidence that lignin is an unstable polymer at elevated temperatures and could be efficiently deconstructed under hydrothermal conditions with and without a catalyst.

Green Chemistry published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C9H12O, Synthetic Route of 645-56-7.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Jimenez, Elena published the artcileAtmospheric lifetimes and global warming potentials of CF₃CH₂CH₂OH and CF₃(CH₂)₂CH₂OH, HPLC of Formula: 2240-88-2, the publication is ChemPhysChem (2010), 11(18), 4079-4087, database is CAplus and MEDLINE.

A comprehensive study of several atm. degradation routes for two hydrofluoroalcs., CF₃(CH₂)_x=1,2CH₂OH, is presented. The gas-phase kinetics of their reactions with hydroxyl radicals (OH) and chlorine (Cl) atoms are investigated by absolute and relative techniques, resp. The room-temperature rate coefficients (±σ, in cm³ mol.^-1 s^-1) k_OH and k_Cl, are resp. (9.7 ± 1.1) × 10^-13 and (1.60 ± 0.45) × 10^-11 for CF₃CH₂CH₂OH, and (2.62 ± 0.32) × 10^-12 and (8.71 ± 0.24) × 10^-11 for CF₃(CH₂)₂CH₂OH. Average lifetimes of CF₃CH₂CH₂OH and CF₃(CH₂)₂CH₂OH due to the OH and Cl reactions are estimated to be 12 and 4 days, and greater than 20 and 4 years, resp. Also, the IR and UV absorption cross sections of CF₃(CH₂)_x=1,2CH₂OH are determined in the spectral ranges of 500-4000 cm^-1 and 200-310 nm. Photolysis of CF₃(CH₂)_x=1,2CH₂OH in the actinic region (λ ≥ 290 nm) is negligible compared to their homogeneous removal. Addnl., computational IR spectra are consistent with the exptl. ones, thus giving high confidence in the obtained results. The lifetimes of CF₃(CH₂)_x=1,2CH₂OH and IR spectra reported herein allow the calculation of the direct global warming potential of these hydrofluoroalcs. The contribution of CF₃(CH₂)_xCH₂OH to radiative forcing of climate change will be negligible.

ChemPhysChem published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C3H5F3O, HPLC of Formula: 2240-88-2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Smolobochkin, A. V. published the artcileReaction of 4-Chloro-6-[1-(vinylsulfonyl)pyrrolidin-2-yl]benzene-1,3-diol with Some Amines, Computed Properties of 6346-09-4, the publication is Russian Journal of General Chemistry (2018), 88(1), 131-135, database is CAplus.

4-Chloro-6-[1-(vinylsulfonyl)pyrrolidin-2-yl]benzene-1,3-diol prepared by the reaction of 2-ethoxypyrrolidine with 4-chlororesorcinol was introduced into the aza-Michael reaction with various amines which led to the formation of new 1-sulfonyl-2-arylpyrrolidines.

Russian Journal of General Chemistry published new progress about 6346-09-4. 6346-09-4 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Ether, name is 4,4-Diethoxybutan-1-amine, and the molecular formula is C7H6Cl2, Computed Properties of 6346-09-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Smolobochkin, A. V. published the artcileSynthesis of 1-(arylsulfonyl)pyrrolidines from aryl alcohols and 1-[(4-chlorophenyl)sulfonyl]-2-ethoxypyrrolidine, Formula: C8H19NO2, the publication is Russian Journal of Organic Chemistry (2017), 53(2), 199-202, database is CAplus.

Acid-catalyzed reaction of 1-[(4-chlorophenyl)sulfonyl]-2-ethoxypyrrolidine with aryl alcs. led to the formation of new 1-(arylsulfonyl)pyrrolidines. The reaction proceeded under mild conditions and might be used as a convenient method for the synthesis of pyrrolidine-1-sulfonylarene derivatives containing a phenol fragment in the position 2.

Russian Journal of Organic Chemistry published new progress about 6346-09-4. 6346-09-4 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Ether, name is 4,4-Diethoxybutan-1-amine, and the molecular formula is C9H10O4, Formula: C8H19NO2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Velasco, C. published the artcileEffects of the nuclear factor-κB inhibitors 2-hydroxy-4-trifluoromethylbenzoic acid and aspirin on micturition in rats with normal and inflamed bladder, Formula: C8H5F3O3, the publication is Journal of Urology (Hagerstown, MD, United States) (2001), 166(5), 1962-1968, database is CAplus.

We examined the effects of i.v. administration of the 2 nuclear factor-κB inhibitors aspirin and 2-hydroxy-4-trifluoromethylbenzoic acid (HTB) on bladder filling and voiding in anesthetized and conscious rats. Disappearance of isovolumic bladder contractions after i.v. administration of different doses of aspirin and HTB in anesthetized, transurethrally catheterized rats was evaluated. Cystometry was performed in conscious rats during bladder infusion with saline or diluted acetic acid as well as in those with cyclophosphamide induced cystitis. Changes in bladder capacity and voiding pressure were evaluated after i.v. administration of test compounds Aspirin induced a dose dependent disappearance of isovolumic bladder contractions in anesthetized rats with an extrapolated dose of 2.1 mg./kg. inducing 10 min of bladder quiescence. HTB was practically inactive, inducing a dose independent block of 3 to 4 min after i.v. administration of 1 to 10 mg./kg. In conscious rats with a bladder infused with saline aspirin was poorly active on bladder capacity, inducing a 20% increase 60 min after i.v. administration of 30 and 100 mg./kg. In rats with a bladder infused with acetic acid aspirin was much more active when injected at the initiation of inflammation and after 1 h of irritant infusion. In this latter situation aspirin increased bladder capacity up to 60% after i.v. administration of 30 and 100 mg./kg. Similar results were obtained in rats with cyclophosphamide induced cystitis in which the bladder was infused with saline. In these cystometrog. models 30 mg./kg. HTB i.v. was completely inactive. The results show that HTB is devoid of significant effects on the micturition reflex in the absence or presence of bladder inflammation, suggesting that acute inhibition of nuclear factor-κB does not influence bladder urodynamics in rats. In contrast, aspirin, which is a cyclooxygenase and nuclear factor-κB inhibitor, was always effective, indicating the important role of cyclooxygenase enzymes.

Journal of Urology (Hagerstown, MD, United States) published new progress about 328-90-5. 328-90-5 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Phenol, name is 2-Hydroxy-4-(trifluoromethyl)benzoic acid, and the molecular formula is C14H10O4, Formula: C8H5F3O3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Velasco, C published the artcileEffects of the nuclear factor-kappaB inhibitors 2-hydroxy-4-trifluoromethylbenzoic acid and aspirin on micturition in rats with normal and inflamed bladder., Category: alcohols-buliding-blocks, the publication is The Journal of urology (2001), 166(5), 1962-8, database is MEDLINE.

PURPOSE: We examined the effects of intravenous administration of the 2 nuclear factor-kappaB inhibitors aspirin and 2-hydroxy-4-trifluoromethylbenzoic acid (HTB) on bladder filling and voiding in anesthetized and conscious rats. MATERIALS AND METHODS: Disappearance of isovolumic bladder contractions after intravenous administration of different doses of aspirin and HTB in anesthetized, transurethrally catheterized rats was evaluated. Cystometry was performed in conscious rats during bladder infusion with saline or diluted acetic acid as well as in those with cyclophosphamide induced cystitis. Changes in bladder capacity and voiding pressure were evaluated after intravenous administration of test compounds. RESULTS: Aspirin induced a dose dependent disappearance of isovolumic bladder contractions in anesthetized rats with an extrapolated dose of 2.1 mg./kg. inducing 10 minutes of bladder quiescence. HTB was practically inactive, inducing a dose independent block of 3 to 4 minutes after intravenous administration of 1 to 10 mg./kg. In conscious rats with a bladder infused with saline aspirin was poorly active on bladder capacity, inducing a 20% increase 60 minutes after intravenous administration of 30 and 100 mg./kg. In rats with a bladder infused with acetic acid aspirin was much more active when injected at the initiation of inflammation and after 1 hour of irritant infusion. In this latter situation aspirin increased bladder capacity up to 60% after intravenous administration of 30 and 100 mg./kg. Similar results were obtained in rats with cyclophosphamide induced cystitis in which the bladder was infused with saline. In these cystometrography models 30 mg./kg. HTB intravenously was completely inactive. CONCLUSIONS: The results show that HTB is devoid of significant effects on the micturition reflex in the absence or presence of bladder inflammation, suggesting that acute inhibition of nuclear factor-kappaB does not influence bladder urodynamics in rats. In contrast, aspirin, which is a cyclooxygenase and nuclear factor-kappaB inhibitor, was always effective, indicating the important role of cyclooxygenase enzymes.

The Journal of urology published new progress about 328-90-5. 328-90-5 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Phenol, name is 2-Hydroxy-4-(trifluoromethyl)benzoic acid, and the molecular formula is C12H20O6, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Kurouchi, Hiroaki published the artcileControlling Selectivity by Controlling Energy Partitioning in a Thermal Reaction in Solution, HPLC of Formula: 20117-47-9, the publication is Journal of the American Chemical Society (2016), 138(44), 14534-14537, database is CAplus and MEDLINE.

The comparison of exptl. and predicted kinetic isotope effects in the α-cleavage of alkoxy radicals is used here to judge the applicability of statistical rate theories. It is found that the governing rate theory and the statistical vs. nonstatistical nature of the cleavage depend on the cleavage barrier and how much energy is imparted to the radical. The latter can then be controlled by changing the size of substituents in the system. With a large alkyl group substituent, the vibrational energy of the alkoxy radical is increased, but this energy is not statistically distributed, leading to a lower isotope effect than predicted by statistical theories. The observed isotope effect can be approx. rationalized using a semistatistical localized RRKM model.

Journal of the American Chemical Society published new progress about 20117-47-9. 20117-47-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic cyclic hydrocarbon,Alcohol, name is 1-Methylcyclobutan-1-ol, and the molecular formula is C5H10O, HPLC of Formula: 20117-47-9.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Verevkin, Sergey P. published the artcilePaving the way to the sustainable hydrogen storage: Thermochemistry of amino-alcohols as precursors for liquid organic hydrogen carriers, Name: 2-Aminobutan-1-ol, the publication is Journal of Chemical Thermodynamics (2021), 106610, database is CAplus.

The absolute vapor pressures of four amino-alcs. were measured using the transpiration method. A consistent set of standard molar enthalpies of vaporization for eighteen amino-alcs. was evaluated using empirical and structure-property correlations. The averaged values of vaporization enthalpies are recommended as reliable benchmark properties for thermochem. calculations of the energetics of chem. reactions including synthesis of alkyl-substituted pyrazines, compounds considered as seminal liquid organic hydrogen carriers (LOHC).

Journal of Chemical Thermodynamics published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C17H14N2O2, Name: 2-Aminobutan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Verevkin, Sergey P. published the artcileEvaluation of vaporization thermodynamics of pure amino-alcohols, Quality Control of 96-20-8, the publication is Journal of Molecular Liquids (2021), 116568, database is CAplus.

The absolute vapor pressures of three amino-alcs. were measured using the transpiration method. The consistent set of standard molar enthalpies of vaporization for eighteen amino-alcs. was evaluated using empirical and structure-property correlations. Correlation of vaporization enthalpies with normal boiling temperatures was established. Vaporization enthalpies of amino-alcs. obey the group-additivity rules. The averaged values of vaporization enthalpies were recommended as reliable benchmark properties for the heat management of CO₂ capture technologies.

Journal of Molecular Liquids published new progress about 96-20-8. 96-20-8 belongs to alcohols-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Alcohol, name is 2-Aminobutan-1-ol, and the molecular formula is C13H16O2, Quality Control of 96-20-8.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts