Tag: M.W=100-150

Kagami, Hiroaki published the artcileNucleophilic substitution on dialkoxy disulfides. III. Reaction with thioureas, Category: amides-buliding-blocks, the publication is Bulletin of the Chemical Society of Japan (1980), 53(12), 3658-60, database is CAplus.

Treating RNHC(S)NHR¹ (R = Me₂CH, cyclohexyl, Ph, 2-MeC₆H₄, Et, 2-ClC₆H₄, allyl; R¹ = Me₂CH, cyclohexyl, 2-MeC₆H₄) with (EtOS)₂ in CH₂Cl₂ in the presence of mol. sieves gave 19-66% RN:C:NR¹; whereas upon treatment with (EtOS)₂, (R²)₂NC(S)NH₂ (R² = Et, Pr, Bu, Ph, N(R²)₂ = morpholino) gave 48-75% thiadiazole I.

Bulletin of the Chemical Society of Japan published new progress about 14294-10-1. 14294-10-1 belongs to amides-buliding-blocks, auxiliary class Morpholine,Thiourea,Amine,Amide, name is Morpholine-4-carbothioamide, and the molecular formula is C5H10N2OS, Category: amides-buliding-blocks.

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

Chambers, Luke I. published the artcilePredictive identification of co-formers in co-amorphous systems, HPLC of Formula: 1453-82-3, the publication is European Journal of Pharmaceutical Sciences (2021), 105636, database is CAplus and MEDLINE.

This work aims to understand the properties of co-formers that form co-amorphous pharmaceutical materials and to predict co-amorphous system formation. A partial least square – discriminant anal. (PLS-DA) was performed using known co-amorphous systems described by 36 variables based on the properties of the co-former and the binding energy of the system. The PLS-DA investigated the propensity to form co-amorphous material of the active pharmaceutical ingredients: mebendazole, carvedilol, indomethacin, simvastatin, carbamazepine and furosemide in combination with 20 amino acid co-formers. The variables that were found to favor the propensity to form co-amorphous systems appear to be a relatively large value for average mol. weight and the sum of the difference between hydrogen bond donors and hydrogen bond acceptors for both components, and a relatively small or neg. value for excess enthalpy of mixing, excess enthalpy of hydrogen bonding and the difference in the Hansen parameter for hydrogen bonding of the coformer and the active pharmaceutical ingredient (API). To test the predictive power of this model, 29 potential co-formers were used to form either co-amorphous or crystalline two-component materials with mebendazole. Of these 29 two-component systems, the co-amorphous nature of a total of 26 materials was correctly predicted by the model, giving a predictive hit rate of 90%.

European Journal of Pharmaceutical Sciences published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H6N2O, HPLC of Formula: 1453-82-3.

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

Louvel, Julien published the artcileAgonists for the Adenosine A₁ Receptor with Tunable Residence Time. A Case for Nonribose 4-Amino-6-aryl-5-cyano-2-thiopyrimidines, Formula: C5H10N2OS, the publication is Journal of Medicinal Chemistry (2014), 57(8), 3213-3222, database is CAplus and MEDLINE.

The synthesis and evaluation of previously unreported 4-amino-6-aryl-5-cyano-2-thiopyrimidines as selective human adenosine A₁ receptor (hA₁AR) agonists with tunable binding kinetics, this without affecting their nanomolar affinity for the target receptor were described. They show a very diverse range of kinetic profiles (from 1 min (compound I) to 1 h (compound II)), and their structure-affinity relationships (SAR) and structure-kinetics relationships (SKR) were established. When put in perspective with the increasing importance of binding kinetics in drug discovery, these results bring new evidence of the consequences of affinity-only driven selection of drug candidates, i.e., the potential elimination of slightly less active compounds that may display preferable binding kinetics.

Journal of Medicinal Chemistry published new progress about 14294-10-1. 14294-10-1 belongs to amides-buliding-blocks, auxiliary class Morpholine,Thiourea,Amine,Amide, name is Morpholine-4-carbothioamide, and the molecular formula is C5H10N2OS, Formula: C5H10N2OS.

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

Huang, Zhuo-Bin published the artcileSelectively Oxidative Thiolysis of Nitriles into Primary Thioamides and Insecticidal Application, Category: amides-buliding-blocks, the publication is Asian Journal of Organic Chemistry (2020), 9(8), 1243-1248, database is CAplus.

Primary thioamides were useful building blocks for drug and insecticide development, therefore an environmentally benign synthesis of primary thioamides was desired. An oxidative thiolysis for the selective transformation of nitriles into primary thioamides using elemental sulfur or thiuram in the presence of K₂S₂O₈ in DMF/H₂O was discussed. This practical method enables access to a wide range of synthetically and pharmaceutically useful primary thioamides. Advantages of this reaction include transition-metal-free and base-free reaction conditions, use of an environmentally benign solvent (DMF/H₂O) system, the use of non-toxic elemental sulfur or thiuram as the sulfur sources, and good functional groups tolerances with excellent selectivity. Furthermore, the insecticide Fipronil was also converted to the corresponding thioamide and maintains excellent bioactivity against P. xylostella. The LC₅₀ value of Fipronil thioamide was 1.25 mg/L.

Asian Journal of Organic Chemistry published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H6N2O, Category: amides-buliding-blocks.

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

Kumar, Saroj published the artcileNovel Aceclofenac Cocrystals with l-Cystine: Virtual Coformer Screening, Mechanochemical Synthesis, and Physicochemical Investigations, Related Products of amides-buliding-blocks, the publication is Current Drug Delivery (2021), 18(1), 88-100, database is CAplus and MEDLINE.

Current work focuses on the improvement of the solubility and dissolution of ACF by the cocrystal approach. Aceclofenac (ACF) is one of the commonly used Nonsteroidal Anti-Inflammatory Drug (NSAID) representing a variety of therapeutic applications including management of pain, inflammation, rheumatoid arthritis, and osteoarthritis, etc. But very low solubility and dissolution rate of ACF compromise its therapeutic utility. Now a day’s cocrystn. technique has emerged as a novel technique for modulation of the said problems. The Specific objectives of this research work were mechanochem. synthesis, characterization, and performance evaluation of aceclofenac cocrystal. ACF was screened with various pharmaceutically acceptable coformers (Selected from GRAS and EAFUS list) using MOPAC software and phys. screening method to find out novel cocrystals of ACF with enhanced solubility and dissolution rate. Novel cocrystals (multi-component crystalline solid) of ACF with l-cystine were prepared by a neat grinding method and by liquid assisted grinding method. The synthesized cocrystals (ACF-l-CYS NG and ACF-l-CYS LAG) were characterized carefully by Differential Scanning Calorimetry (DSC), IR Spectroscopy (IR), and Powder XRay Diffraction (PXRD) to verify the formation of the cocrystals. Pharmaceutically significant properties such as powder dissolution rate, solubility, and stability of the prepared cocrystals were evaluated. Compared to pure ACF, the prepared cocrystals showed superior solubility and dissolution rate. The prepared cocrystals were found to be stable and non-hygroscopic under study conditions. The cocrystn. technique was successfully utilized to increase the solubility and dissolution rate of aceclofenac.

Current Drug Delivery published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H6N2O, Related Products of amides-buliding-blocks.

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

Burger, Klaus published the artcileHexafluoroacetone as protective group and activating reagent in amino acid and peptide chemistry. 10. Synthesis of 3-(thiazol-4-yl)alanine and 3-(selenazol-4-yl)alanine derivatives from aspartic acid, Product Details of C5H10N2OS, the publication is Synthesis (1992), 1145-50, database is CAplus.

3-(Thiazol-4-yl)alanines I (R = Ph, 4-MeC₆H₄, 4-MeOC₆H₄, 2-furyl, NMe₂, 4-FC₆H₄, 2-thienyl, H, Me; R¹ = H, Me) and the 3-(selenazol-4-yl)alanine II were obtained from aspartic acid via 2,2-bis(trifluoromethyl)-4-(3-bromo-2-oxopropyl)-1,3-oxazolidin-5-one in a Hantzsch synthesis, using hexafluoroacetone as protective group.

Synthesis published new progress about 14294-10-1. 14294-10-1 belongs to amides-buliding-blocks, auxiliary class Morpholine,Thiourea,Amine,Amide, name is Morpholine-4-carbothioamide, and the molecular formula is C5H10N2OS, Product Details of C5H10N2OS.

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

Dojer, Brina published the artcileIron(II) pyridinecarboxamide complexes: Synthesis, crystal structures and magnetic properties, Application In Synthesis of 1453-82-3, the publication is Journal of Molecular Structure (2022), 133393, database is CAplus.

Two new mononuclear complexes of iron(II) pyridinecarboxamides (picolinamide – pia, isonicotinamide – isn), [Fe(pia)₃]·(SO₄)·3H₂O (1) and (isnH)₂[Fe(isn)₂(SO₄)₂(H₂O)₂]·H₂O (2) were synthesized by the reaction of iron(II) sulfate heptahydrate and pyridinecarboxamides in different solvents by standard method under reflux. Both compounds were characterized by single-crystal x-ray diffraction structure anal., magnetic measurements and by FTIR spectroscopy. In the complex cation of 1 Fe²⁺ ion is six coordinated by three nitrogen and three oxygen atoms from three bidentate picolinamide ligands in mer mode. In complex anion of 2 central Fe²⁺ ion is six coordinated by two isonicotinamide ligands, two sulfate ligands and two water mols. in trans mode. In both structures complex ions are connected with counterions and crystal water mols. with intermol. hydrogen bonds. Magnetic properties of the compounds were measured between 2 K and 300 K giving the results: μ_eff = 4.5 μB for compound 1 and μ_eff = 4.7 μB for 2. Exptl. values of the IR spectra are comparable with literature data and are in good agreement with results of the structural anal.

Journal of Molecular Structure published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H6N2O, Application In Synthesis of 1453-82-3.

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

Hill, Timothy A. published the artcileInhibition of Dynamin Mediated Endocytosis by the Dynoles-Synthesis and Functional Activity of a Family of Indoles, SDS of cas: 15029-36-4, the publication is Journal of Medicinal Chemistry (2009), 52(12), 3762-3773, database is CAplus and MEDLINE.

Screening identified two bisindolylmaleimides as 100 μM inhibitors of the GTPase activity of dynamin I. Focused library approaches allowed development of indole-based dynamin inhibitors called dynoles. 100-Fold in vitro enhancement of potency was noted with the best inhibitor, 2-cyano-N-octyl-3-[1-(3-dimethylaminopropyl)-1H-indol-3-yl]-acrylamide (dynole 34-2), a 1.3 ± 0.3 μM dynamin I inhibitor. Dynole 34-2 potently inhibited receptor mediated endocytosis (RME) internalization of Texas red-transferrin. The rank order of potency for a variety of dynole analogs on RME in U2OS cells matched their rank order for dynamin inhibition, suggesting that the mechanism of inhibition is via dynamin. Dynoles are the most active dynamin I inhibitors reported for in vitro or RME evaluations. Dynole 34-2 is 15-fold more active than dynasore against dynamin I and 6-fold more active against dynamin mediated RME (IC₅₀ ∼15 μM; RME IC₅₀ ∼80 μM). The dynoles represent a new series of tools to better probe endocytosis and dynamin-mediated trafficking events in a variety of cells.

Journal of Medicinal Chemistry published new progress about 15029-36-4. 15029-36-4 belongs to amides-buliding-blocks, auxiliary class Nitrile,Amine,Aliphatic hydrocarbon chain,Amide, name is 2-Cyano-N-ethylacetamide, and the molecular formula is C5H8N2O, SDS of cas: 15029-36-4.

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

Kumar, Adarsh published the artcileBiocarbon Supported Nanoscale Ruthenium Oxide-Based Catalyst for Clean Hydrogenation of Arenes and Heteroarenes, Quality Control of 1453-82-3, the publication is ACS Sustainable Chemistry & Engineering (2020), 8(41), 15740-15754, database is CAplus.

Despite considerable achievements in the hydrogenation of aromatic hydrocarbons over the past few years, the ability to hydrogenate arene or heteroarene rings in a highly selective manner in the presence of other reducible sites or without harming the remaining mol. structure has long been a major challenge. Such chemoselectivity and functional group tolerance is highly desirable for enabling direct access to key building blocks of polymers and pharmaceutical agents. For achieving such high selectivity, the development of suitable catalysts is of central importance. Herein, we report a convenient method for the scalable preparation of ruthenium oxide (RuO₂) nanoparticles supported on pine needle char (PNC) by simple impregnation of ruthenium salt on unactivated PNC, a solid byproduct (biochar) obtained in the slow pyrolysis of biomass pine needles. The resulting RuO₂-based nanocatalyst (RuO₂@PNC) exhibited remarkable activity and high selectivity for the hydrogenation of more than 50 challenging arenes and heteroarenes, including biomass-derived aromatic compounds (e.g., 4-n-propylphenol, furfuryl alc., and 2-Me furan). The synthetic value of this transformation is showcased for the hydrogenation of arene mixture present in petroleum refineries or coal tars as well as biomass-derived oils (bio-oils) with enriched furfural, ether, and phenol derivatives Under optimized conditions, the performance of this new catalyst was compared with state-of-the-art com. catalysts such as Ru/C, Pd/C, and Raney nickel and found that RuO₂@PNC is more superior and selective. Furthermore, the catalyst is easily recovered and reused up to four cycles. Biocarbon supported RuO₂-based catalyst exhibited remarkable activity and selectivity for clean hydrogenation of arenes and heteroarenes.

ACS Sustainable Chemistry & Engineering published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H6N2O, Quality Control of 1453-82-3.

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

Wang, Xiaojuan published the artcileCollecting the Molecular and Ionization States of Irbesartan in the Solid State, Computed Properties of 1453-82-3, the publication is Crystal Growth & Design (2020), 20(9), 5664-5669, database is CAplus.

An active pharmaceutical ingredient may exist in different solid forms, which are the products of the variation of mol. conformation and packing order stabilized through different intermol. interactions. Two special conditions, tautomerism and amphoterism, will make the solid-state landscape more abundant and diverse. Two known polymorphs of irbesartan (IBS) contain mols. in different tautomeric forms, resp. Here, one cationic salt and one anionic salt of IBS were successfully harvested. The NMR spectra demonstrated clear fingerprint features for these four different mol. and ionization states of IBS. The newly obtained crystalline forms also provide much better dissolution performance. Irbesartan can exist in 1H-tautomeric, 2H-tautomeric, cationic, and anionic states in different crystalline samples.

Crystal Growth & Design published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C6H12Br2, Computed Properties of 1453-82-3.

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