Day: November 11, 2022

Majellaro, Maria published the artcile3,4-Dihydropyrimidin-2(1H)-ones as Antagonists of the Human A2B Adenosine Receptor: Optimization, Structure-Activity Relationship Studies, and Enantiospecific Recognition, Computed Properties of 598-50-5, the main research area is dihydropyrimidinone A2B adenosine receptor antagonist antitumor prostate cancer.

We present and thoroughly characterize a large collection of 3,4-dihydropyrimidin-2(1H)-ones as A2BAR antagonists, an emerging strategy in cancer (immuno) therapy. Most compounds selectively bind A2BAR, with a number of potent and selective antagonists further confirmed by functional cAMP experiments The series was analyzed with one of the most exhaustive free energy perturbation studies on a GPCR, obtaining an accurate model of the structure-activity relationship of this chemotype. The stereospecific binding modeled for this scaffold was confirmed by resolving the two most potent ligands [(±)-47, and (±)-38Ki = 10.20 and 23.6 nM, resp.] into their two enantiomers, isolating the affinity on the corresponding (S)-eutomers (Ki = 6.30 and 11.10 nM, resp.). The assessment of the effect in representative cytochromes (CYP3A4 and CYP2D6) demonstrated insignificant inhibitory activity, while in vitro experiments in three prostate cancer cells demonstrated that this pair of compounds exhibits a pronounced antimetastatic effect.

Journal of Medicinal Chemistry published new progress about Adenosine receptor antagonists. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Computed Properties of 598-50-5.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Silva Teixeira, Carla S. published the artcileStudying Haloanisoles Interaction with Olfactory Receptors, Recommanded Product: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is odorant haloanisole olfactory receptor association docking mol dynamic simulation; Haloanisoles; homology; molecular docking; molecular dynamics; olfactory receptors.

In this paper, computational means were used to explain and predict the interaction of several odorant mols., including three haloanisoles, 2,4,6-trichloroanisole (TCA), 2,4,6-tribromoanisole (TBA), and 2,4,6-trichlorophenol (TCP), with three olfactory receptors (ORs): OR1A1, OR1A2, and OR3A1. As the X-ray structure of these ORs is not known, the three-dimensional structure of each OR was modeled by homol. modeling. The structures of these ORs were stabilized by mol. dynamic simulations and the complexes of the odorant mols. with each ORs were generated by mol. docking. The theor. results have shown that each OR has distinct but well-defined binding regions for each type of odorant mols. (aldehydes and alcs.). In OR3A1, the aldehydes bind in the bottom region of the binding pocket nearby Ser257 and Thr249. In the paralogues OR1A1 and OR1A2, the aldehydes tend to interact in the top region of the binding pocket and close to a pos. charged lysine. On the other hand, the alcs. interact in the bottom region of the active site and close to a neg. charged aspartate. These results indicate that when aldehydes and alcs. odorants compete in these two ORs, the aldehydes can block the access of the alcs. odorants to their specific binding site. This observation goes in line with the exptl. data that reveals that when the odorant is an aldehyde, a lower quantity of ligand is needed to cause 50% of the maximum response (lower EC50), when compared with the alcs. The theor. results have also allowed to explain the differences in the activity of (S)-(-)-citronellol in the wild-type and mutated OR1A1. The theor. results show that Asn109 has a preponderant role in this matter, since when it is mutated, it leads to a conformational rearrangement of the binding pocket that prevents the interaction of (S)-(-)-citronellol with Asp111 that was shown to be important for the OR activation. The good agreement between the theor. and exptl. results also lead us to study the potential interaction of the haloanisoles, TCA, TBA, and TCP with these ORs. The results have shown that these compounds can compete with other known agonists/antagonists for the access to the binding regions of ORs. These results may partially explain the capability of these compounds to give a musty odor to food and beverages at very low concentrations

ACS Chemical Neuroscience published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Recommanded Product: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schulze, Matthias published the artcileSynthesis of 2-arylethylamines by the Curtius rearrangement, Formula: C11H12O3, the main research area is acyl azide preparation Curtius rearrangement; phenethylamine preparation; arylethylamine preparation; amphetamine preparation.

Phenethylamines were synthesized using the Curtius reaction and with three different methods of preparing the acyl azide functional group. Carbamates derived from isocyanate were convenient protecting groups for alkylation of amines. Starting from PhCHO, amphetamine was prepared in 3 steps through an oxazolidin-2-one intermediate in 62% overall yield.

Synthetic Communications published new progress about Aralkyl amines Role: SPN (Synthetic Preparation), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chakrabarti, Kaushik published the artcileSynthesis of N-methylated amines from acyl azides using methanol, Safety of 4-Methoxy-N-methylaniline, the main research area is methylated amine preparation acyl azide methanol Curtius rearrangement.

The transformation of acyl azide derivatives into N-methylamines was developed using methanol as the C1 source via the one-pot Curtius rearrangement and borrowing hydrogen methodol. Following this protocol, various functionalized N-methylated amines were synthesized using the (NNN)Ru(II) complex from carboxylic acids via an acyl azide intermediate. Several kinetic studies and DFT calculations were carried out to support the mechanism and also to determine the role of the Ru(II) complex and base in this transformation.

Organic & Biomolecular Chemistry published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Safety of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Zhaosheng published the artcilePhotoredox Cyclization of N-Arylacrylamides for Synthesis of Dihydroquinolinones, COA of Formula: C8H11NO, the main research area is arylacrylamide cyanoarene photocatalyst photoredox cyclization; dihydroquinolinone regioselective preparation.

Metal- and additive-free photoredox cyclization of N-arylacrylamides was herein reported that provided a concise access to the formation of dihydroquinolinones. In this protocol, sustainable visible light was used as the energy source, and the organic light-emitting mol. 4CzIPN served as the efficient photocatalyst. This reaction system features exclusive 6-endo-trig cyclization selectivity with a generally good yield of a range of functionalized dihydroquinolinones and dihydrobenzoquinolinones. Mechanistical studies reveal the feasibility of both 1,3-H shift and intersystem crossing of the diradical intermediate.

Organic Letters published new progress about Photocyclization (regioselective). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, COA of Formula: C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Oddy, Meghan J. published the artcileVisible-Light Mediated Metal-Free 6π-Photocyclization of N-Acrylamides: Thioxanthone Triplet Energy Transfer Enables the Synthesis of 3,4-Dihydroquinolin-2-ones, Computed Properties of 5961-59-1, the main research area is dihydroquinolinone preparation; acrylamide photocyclization thioxanthone catalyst.

An efficient thioxanthone catalyzed triplet energy transfer process for the synthesis of 3,4-dihydroquinolin-2-ones via a 6π-photocyclization WAs reported. Featuring a rare example of a metal-free formal C(sp2)-H/C(sp3)-H arylation mediated by visible-light, this work hopes to inspire further interest in these small mols. as sustainable alternatives to existing transition metal photocatalysts in related processes.

Organic Letters published new progress about Photochemistry. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Computed Properties of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ding, Siyi published the artcileSilver(I)-mediated oxidation/cyclization of acrylamides with alkyl trifluoroborates, Formula: C8H11NO, the main research area is oxindole preparation silver mediated; acrylamide alkyl trifluoroborate tandem oxidative cyclization.

A mild silver-mediated oxidative cyclization of acrylamides I (R1 = H, 4-MeO, 4-Cl, 2-F; R2 = Me, i-Pr) has been developed by using alkyl trifluoroborates R3BF3K (R3 = i-Bu, EtCOCH2CH2, MeO2CCHMeCH2, cyclopentyl, PhCH2CH2, etc.) as radical precursors. It proceeds through a tandem radical addition/cyclization process, in which two new carbon-carbon bonds were formed. This protocol allows reliable and practical access to build the skeleton of 3,3-disubstituted oxindoles II in moderate yields; the readily available starting reagents, broad substrate scope and mild reaction conditions are the characteristic features of this protocol.

Synthetic Communications published new progress about Fluoroborates Role: RCT (Reactant), RACT (Reactant or Reagent) (alkyl). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Formula: C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ruyet, Louise published the artcileZ-Selective Pd-catalyzed 2,2,2-trifluoroethylation of acrylamides at room temperature, Synthetic Route of 104-01-8, the main research area is quinolinyl acrylamide trifluoroethyl mesityliodonium trifluoromethanesulfonate palladium catalyst diastereoselective trifluoroethylation; quinolyl trifluoropentenamide preparation.

A straightforward 2,2,2-trifluoroethylation of acrylamides by Pd-catalyzed C-H bond activation was reported by using a fluorinated hypervalent iodine reagent as a coupling partner. At room temperature, this additive-free approach allowed the synthesis of Z-2,2,2-trifluoroethylated acrylamides (19 examples, up to 73% yield) in a stereoselective manner. Under these mild reaction conditions, the methodol. turned out to be functional group tolerant and mechanistic studies gave us a better understanding of the transformation.

Chemical Communications (Cambridge, United Kingdom) published new progress about Diastereoselective synthesis. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Synthetic Route of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chen, Mu-Yi published the artcilePd-Catalyzed Selective Chlorination of Acrylamides at Room Temperature, Category: isoquinoline, the main research area is palladium catalyzed stereoselective chlorination acrylamide.

In this Letter, the transition-metal-catalyzed chlorination of alkenes is reported. In the presence of the com. available and inexpensive N-chlorosuccinimide and without additive, the Pd-catalyzed chlorination of acrylamides by C-H bond activation was developed at room temperature under air. Under these mild reaction conditions, the versatility of the methodol. was demonstrated as an array of acrylamides was functionalized to selectively provide the corresponding difficult-to-synthesize chlorinated olefins as a single Z stereoisomer. Mechanistic studies were conducted to get insights into the reaction mechanism, and post-functionalization reactions further demonstrated the synthetic utility of the approach toward the access to high value-added chlorinated compounds

Organic Letters published new progress about C-H bond activation. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Yufei published the artcileVisible-Light-Induced Photocatalyst-Free Radical Trifluoromethylation, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is heteroarene trifluoromethyl thianthrenium salt trifluoromethylation; trifluoromethyl heteroarene preparation; hydrazone trifluoromethyl thianthrenium salt trifluoromethylation; trifluoromethylhydrazone preparation; acrylamide trifluoromethyl thianthrenium salt trifluoromethylation; trifluoroethylindolinone preparation.

An attractive, versatile, and operationally simple, visible-light-induced, transition-metal-free, photocatalyst-free, and oxidant-free trifluoromethylation has been demonstrated. Triflic anhydride (Tf2O), being inexpensive and readily available, was chosen as the radical trifluoromethyl source. Thianthrene was used as a recyclable Tf2O-activating reagent, and a high-yielding and scalable trifluoromethylation reaction was achieved. D. functional theory and mechanistic studies showed that a free radical homolytic process excited by visible light is involved in this reaction, generating a key trifluoromethyl radical intermediate.

Organic Letters published new progress about Anilines Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Recommanded Product: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem