Month: November 2022

Abiru, Toichi published the artcileNucleosides and nucleotides. 107. 2-(Cycloalkylalkynyl)adenosines: adenosine A₂ receptor agonists with potent antihypertensive effects, Safety of (2-Bromoethyl)cyclopentane, the publication is Journal of Medicinal Chemistry (1992), 35(12), 2253-60, database is CAplus and MEDLINE.

Adenosine receptor-binding profiles in rat brain tissues and antihypertensive effects in spontaneously hypertensive rats (SHR) of a series of 2-(cycloalkylalkynyl)adenosines, e.g. I [R = Ph, CH₂CH₂Ph, C(OH)Me₂, cyclopentyl, cyclohexyl], and their congeners are described. MSBAR of this series of compounds I is discussed, focusing on the length of the alkynyl side chain, and bulkiness of the terminal cycloalkyl substituents in terms of binding activity and cardiovascular effects. I had a preferential affinity of for A₂ receptors. Of these derivatives, 2-(3-cyclopenyl-1-propyn-1-yl)adenosine (II) exhibited the most selective affinity for A₂ receptors. In the C-2 binding region of adenosine, compounds often have potent and/or selective A₂ activity from introduction of an acetylenic group at the C-2 position followed by one methylene residue further followed by a hydrophobic substituent such as a cycloalkyl ring at the terminal position of the alkynyl side chain. I.v. injection of II up to 100 μg/kg had a potent hypotensive effect without a marked decrease in heart rate in anesthetized SHR. These compounds caused a marked bradycardia upon i.v. administration in anesthetized SHR. Oral administration of II (0.1-1 mg/kg) had a potent and long-lasting antihypertensive effect in conscious SHR.

Journal of Medicinal Chemistry published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C7H13Br, Safety of (2-Bromoethyl)cyclopentane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Yamato, Takehiko published the artcileDirect introduction of bromine onto a bridge methylene of 5,13-di-tert-butyl-8,16-dimethyl[2.2]metacyclophane, SDS of cas: 111865-47-5, the publication is Journal of Chemical Research (2006), 493-495, database is CAplus.

Treatment of 5,13-di-tert-butyl-8,16-dimethyl[2.2]metacyclophane I (R = R¹ = H) with 1,3-dibromo-5,5-dimethylhydantoin in CH₂Cl₂ led to the first successful introduction of bromine onto a bridge methylene group, giving I (R = H, R¹ = Br). This product was dehydrobrominated and was also converted to I (R = H; R¹ = OAc, OH) and I (RR¹ = O).

Journal of Chemical Research published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C8H13N5O, SDS of cas: 111865-47-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Morino, Yonezo published the artcileDipole moments of 2,3-dihalo-2,3-dimethylbutane, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane, the publication is Bulletin of the Chemical Society of Japan (1955), 165-71, database is CAplus.

cf. C.A. 45, 947i; 48, 13297h. The dipole moments of X(Me)₂CC(Me)₂X [where X = Cl(I) and Br(II)] are 1.24, -; -, 0.88; 1.30, -; -, 0.97; 1.37, 1.03; and 1.47, 1.15 for -20; -15; 0; 6; 25; and 55°, resp., in CCl₄, and 1.74, 1.24 D. at 25° in C₆H₆. These data indicate the existence of a rotational isomer or gauche form with a ΔΕ of 1.1 and 1.3 for I and 1.5 and 1.5 kcal./mole for II in CCl₄ and heptane, resp. The dipole moments of the gauche form are 2.8 and 3.2 for I and 2.6 and 2.6 D. for II in CCl₄ and heptane, resp.

Bulletin of the Chemical Society of Japan published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Yokohama, Shuichi published the artcileSynthesis and antiallergy activity of [1,3,4]thiadiazolo[3,2-a]-1,2,3-triazolo[4,5-d]pyrimidin-9(3H)-one derivatives. II. 6-Alkyl- and 6-cycloalkylalkyl derivatives, HPLC of Formula: 18928-94-4, the publication is Chemical & Pharmaceutical Bulletin (1992), 40(9), 2391-8, database is CAplus and MEDLINE.

A series of 6-alkyl- or 6-(cycloalkylalkyl)-[1,3,4]thiadiazolo[3,2-a]-1,2,3-triazolo[4,5-d]pyrimidin-9(3H)-ones, including I (R = cyclopentylethyl, cyclopentylpropyl, cyclohexylmethyl, cyclohexylpropyl, cycloheptylethyl, cyclooctylethyl, cyclododecylethyl), was synthesized from the corresponding 1,3,4-thiadiazol-5-amines II and the antiallergic activities of the products were evaluated. Among these compounds 6-(2-cyclohexylethyl)-[1,3,4]thiadiazolo[3,2-a]-1,2,3-triazolo[4,5-d]pyrimidin-9(3H)-one (I, R = cyclohexylethyl), whose x-ray crystallog. stereostructure was determined, is a promising new antiallergic agent, which has low toxicity and dual activity as a leukotriene D₄ receptor antagonist and as an orally active mast cell stabilizer.

Chemical & Pharmaceutical Bulletin published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C9H6N2O2, HPLC of Formula: 18928-94-4.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Nakatsuji, M. published the artcileFerro- and antiferromagnetic interactions of cyano-substituted thioaminyl radicals, SDS of cas: 111865-47-5, the publication is Polyhedron (2001), 20(11-14), 1355-1357, database is CAplus.

Four kinds of thioaminyls, N-(arylthio)-2-ethoxycarbonyl- (1), N-(arylthio)-2-acetyl- (2), N-(arylthio)-2-cyano- (3), and N-(arylthio)-2-fluoro-4,6-diarylphenylaminyls (4) were prepared Thioaminyls 3 were quite persistent and could be isolated as radical crystals. For the isolated three radicals (I, II, and III) the magnetic susceptibility measurements were carried out using a SQUID magnetometer in the temperature range 1.8-300 K The magnetic interactions of II and III were antiferromagnetic, and that of I was ferromagnetic. Anal. of the χ_molT vs. T plots of I with the 1-dimensional regular Heisenberg model gave 2J/k_B=+11.2 K.

Polyhedron published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, SDS of cas: 111865-47-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Han, Hoon published the artcileDevelopment of a proton exchange membrane based on trifluoromethanesulfonylimide-grafted polybenzimidazole, Name: Sodium 3-bromopropane-1-sulfonate, the publication is Polymer Journal (Tokyo, Japan) (2021), 53(12), 1403-1411, database is CAplus.

Trifluoromethanesulfonylimide-grafted polybenzimidazole (PBI-TFSI) was synthesized for proton exchange membrane (PEM) applications. Its proton conductivity was (a) less dependent on humidity and (b) higher than that of conventional fluorine-based PEM (Nafion) and propanesulfonic acid-grafted PBI (PBI-PS) at a relative humidity of 40%. The chem. structure of PBI-TFSI was investigated using ¹H and ¹⁹F NMR and Fourier transform IR spectroscopy. The membranes exhibited good transparency, flexibility, and thermal stability up to 350 °C. Membranes with different side chain grafting ratios were prepared, and the water uptake and hydration number of the PBI-TFSI membranes were lower than those of the PBI-PS membranes, most likely because of the hydrophobicity of the side chain. The higher proton concentration provided by TFSI with stronger acidity than PS might be the reason for the higher proton conductivities of PBI-TFSI.

Polymer Journal (Tokyo, Japan) published new progress about 55788-44-8. 55788-44-8 belongs to bromides-buliding-blocks, auxiliary class Bromide,Salt,Aliphatic hydrocarbon chain,Aliphatic hydrocarbon chain, name is Sodium 3-bromopropane-1-sulfonate, and the molecular formula is C3H6BrNaO3S, Name: Sodium 3-bromopropane-1-sulfonate.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Razuvaev, G. A. published the artcileReactions of triethylaluminum and triphenylaluminum with benzoyl peroxide in benzene solution, Related Products of bromides-buliding-blocks, the publication is Zhurnal Obshchei Khimii (1961), 2340-3, database is CAplus.

cf. Ziegler, Ger. (East) 13539 and Ger. (East) 24757. Reaction of Et₃Al with Bz₂O₂ in C₆H₆ was exothermic and required cooling; run at 25-35°, the reaction gave Et₂AlOBz and EtOBz; at higher temperature, the reaction was very complex and no definite products could be isolated. Approx. 3% Bz₂O₂ failed to react regardless of reagent proportions and the reaction, while very vigorous at first, slowed abruptly in further progress. Ph₃Al and Bz₂O₂ under similar conditions gave Ph₂AlOBz, m. 159-60°, some PhOBz, and C₆H₆.

Zhurnal Obshchei Khimii published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chaudhuri, N. Ray published the artcileNonisothermal studies of adduct molecules of metallic halides with oxo compounds in solid state. III, SDS of cas: 18346-57-1, the publication is Bulletin of the Chemical Society of Japan (1975), 48(10), 2837-41, database is CAplus.

Nonisothermal studies of some adduct mols. of metal halides with ethylene glycol dimethyl ether (L) of the type MX2Ly in solid state were carried out with a derivatograph, where M = Mn(II), Co(II), Ni(II), Cu(II) or Cd(II), X = Cl- or Br-, and y = 0.5-1. These adduct mols. lost L in single or multiple steps upon heating. Thermally stable intermediate products were isolated and characterized by elemental anal. and ir spectral measurement. The activation energy for each step of decomposition of the adduct was evaluated from the anal. of thermogravimetry, differential thermogravimetry, and DTA curves of the resp. derivatograms. Enthalpy change was evaluated from the DTA peak area and the order of reaction was unity for each step of decomposition Thermal parameters for the above adducts were compared with those for the corresponding type of adducts with oxo-compounds like dioxane or THF.

Bulletin of the Chemical Society of Japan published new progress about 18346-57-1. 18346-57-1 belongs to bromides-buliding-blocks, auxiliary class Cobalt, name is Cobalt(II) dibromo(1,2-dimethoxyethane), and the molecular formula is C4H10Br2CoO2, SDS of cas: 18346-57-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Steinberger, Simon published the artcileSynthesis and characterizations of red/near-IR absorbing A-D-A-D-A-type oligothiophenes containing thienothiadiazole and thienopyrazine central units, Synthetic Route of 52431-30-8, the publication is Journal of Materials Chemistry (2012), 22(6), 2701-2712, database is CAplus.

A series of π-conjugated A-D-A-D-A-type oligothiophenes comprising heterocyclic thieno[3,4-c][1,2,5]thiadiazole or thieno[3,4-b]pyrazine as the core and dicyanovinyl or trifluoroacetyl as terminal acceptor groups have been developed as red/near-IR absorbers. The resulting oligomers were characterized by UV-visible spectroscopy, cyclic voltammetry and thermal anal. The low energy absorption band of these oligomers was located at 620-707 nm in solution and at 695-830 nm in thin films. Theor. studies reveal that the insertion of the bicyclic nonclassical thiophenes to the conjugated backbone imposed partial quinoidal character to the resulting oligomers and thus reduced the band gap. HOMO-LUMO energies of the oligothiophenes derived from electrochem. measurements were found to be suitable for the use as donor material in combination with fullerene-C₆₀ as acceptor in planar heterojunction solar cells prepared by vacuum deposition. Such devices incorporating these low band gap oligomers exhibited high fill factor values up to 0.60, and power conversion efficiencies of up to 1.3% under air-mass 1.5G illumination. External quantum efficiency spectra clearly showed the contribution of the low energy absorption to the overall photocurrent.

Journal of Materials Chemistry published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C7H5Br2F, Synthetic Route of 52431-30-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kim, Choung Un published the artcileA new class of acyclic phosphonate nucleotide analogs: Phosphonate isosteres of acyclovir and ganciclovir monophosphates as antiviral agents, Product Details of C8H15BrO2, the publication is Journal of Medicinal Chemistry (1991), 34(7), 2286-94, database is CAplus and MEDLINE.

Novel phosphonate isosteres of acyclovir (ACV) and ganciclovir (DHPG) monophosphates I (R = H, CH₂OH) were found to be potent and selective antiherpesvirus agents. In the series of phosphonate analogs of ACV monophosphate, only the guanine analog I (R = H) exhibited activity against herpesviruses, similar to the structure-activity relationship observed for base modification of ACV analogs. The phosphonate isostere of ACV monophosphate I (R = H) was more effective than ACV in the HSV-1 infected mouse model. The 3′-carba analog of 9-[3-hydroxy-2-(phosphonomethoxy)propyl]purines/ pyrimidines (adenine:HPMPA; guanine:HPMPG; cytosine:HPMPC) are devoid of antiherpesvirus activity. This result confirms that the β-oxygen atom of the phosphonomethyl ether functionality in HPMP-purines/pyrimidines plays a critical role for activity against herpesviruses. The crystal structure of [(benzoyloxy)methoxy]methyladenine II was determined

Journal of Medicinal Chemistry published new progress about 97845-58-4. 97845-58-4 belongs to bromides-buliding-blocks, auxiliary class Other Aliphatic Heterocyclic,Bromide, name is 5-(2-Bromoethyl)-2,2-dimethyl-1,3-dioxane, and the molecular formula is C8H15BrO2, Product Details of C8H15BrO2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary