Tag: M.W:100-200

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, Bioorganic & Medicinal Chemistry Letters called Discovery of 5-substituent-N-arylbenzamide derivatives as potent, selective and orally bioavailable LRRK2 inhibitors, Author is Ding, Xiao; Dai, Xuedong; Long, Kai; Peng, Cheng; Andreotti, Daniele; Bamborough, Paul; Eatherton, Andrew J.; Edge, Colin; Jandu, Karamjit S.; Nichols, Paula L.; Philps, Oliver J.; Stasi, Luigi Piero; Wan, Zehong; Xiang, Jia-Ning; Dong, Kelly; Dossang, Pamela; Ho, Ming-Hsun; Li, Yi; Mensah, Lucy; Guan, Xiaoming; Reith, Alastair D.; Ren, Feng, which mentions a compound: 22353-34-0, SMILESS is NC1=CC(=CN=C1)Cl, Molecular C5H5ClN2, Safety of 5-Chloropyridin-3-amine.

Leucine-rich repeat kinase 2 (LRRK2) has been suggested as a potential therapeutic target for Parkinson’s disease. Herein we report the discovery of 5-substituent-N-arylbenzamide derivatives as novel LRRK2 inhibitors. Extensive SAR study led to the discovery of compounds I, which demonstrated potent LRRK2 inhibition activity, high selectivity across the kinome, good brain exposure, and high oral bioavailability.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Methyl 5-fluoro-3-pyridinecarboxylate, is researched, Molecular C7H6FNO2, CAS is 455-70-9, about PhenoFluorMix: Practical Chemoselective Deoxyfluorination of Phenols.Quality Control of Methyl 5-fluoro-3-pyridinecarboxylate.

A practical deoxyfluorination with novel deoxyfluorinating reagent PhenoFluorMix, a mixture of N,N’-1,3-bis(2,6-diisopropylphenyl)chloroimidazolium chloride and CsF, is presented. PhenoFluorMix overcomes the challenges associated with hydrolysis of PhenoFluor. PhenoFluorMix does not hydrolyze, is readily available on decagram scale, and is storable in air. In this paper, we demonstrate the practicality of the reagent and exhibit the deoxyfluorination of a variety of phenols and heterocycles.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Product Details of 707-61-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about MALDI-TOF/TOF CID Study of Polycarbodiimide Branching Reactions. Author is Gies, Anthony P.; Heath, William H.; Keaton, Richard J.; Jimenez, Jorge J.; Zupancic, Joseph J..

A combination of MALDI-TOF MS and TOF/TOF collision-induced dissociation (CID) experiments was conducted on toluene diisocyanate (TDI) based carbodiimide and Ph isocyanate (PI) carbodiimide mixtures to examine their degradation mechanisms and identify “”fingerprint”” side products associated with each of their synthesis. Findings include the first observance of the 3-methyl-1-phenyl-2-phospholene-1-oxide (MPPO)/carbodiimide (CDI) catalyst-attached intermediate and the use of CID fragmentation to verify its chem. structure and degradation processes. This work is significant for two reasons: (1) it identifies extensive branching as the root-cause of viscosity build-up in carbodiimides and (2) it presents a BF3-initiated mechanism leading to polyguanidine formation.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Photoredox asymmetric catalytic enantioconvergent substitution of 3-chlorooxindoles, published in 2019, which mentions a compound: 4360-63-8, Name is 2-Bromomethyl-1,3-dioxolane, Molecular C4H7BrO2, Synthetic Route of C4H7BrO2.

An enantioconvergent substitution of 3-substituted 3-chlorooxindoles I (R = H, 6-Cl, 4-Br, 5-NO2, etc.; R1 = 4-FC6H4S(O)2, Me; Ar = Ph, naphthalen-2-yl, C6D5, etc.) with N-aryl glycines Ar1NHCH2C(O)OH [Ar1 = 4-methoxyphenyl, 4-methoxy-3-(trifluoromethyl)phenyl] under visible light irradiation is reported. A transition-metal-free cooperative catalysis platform with a dicyanopyrazine-derived chromophore (DPZ) as a photoredox catalyst and a chiral Bronsted acid catalyst is effective for these transformations, which involve a single-electron transfer redox step and an enantioselective radical coupling. A variety of valuable chiral 3-aminomethylene-3-substituted oxindoles II can be directly synthesized with high yields and enantioselectivities.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Addressing species specific metabolism and solubility issues in a quinoline series of oral PDE4 inhibitors, published in 2010-01-01, which mentions a compound: 22353-34-0, Name is 5-Chloropyridin-3-amine, Molecular C5H5ClN2, Reference of 5-Chloropyridin-3-amine.

Species specific conversion of the lead PDE4 inhibitor 1 to the quinolone 3 was identified as the major route of metabolism in the cynomolgus monkey. Modification of the template to give the cinnoline 9 retained potency and selectivity, and greatly improved the pharmacokinetic profile in the cynomolgus monkey compared with 1. Addnl. SAR studies aimed at improving the solubility of 9 are also described.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Enantioselective Synthesis of 7(S)-Hydroxydocosahexaenoic Acid, a Possible Endogenous Ligand for PPARα, the main research direction is hydroxydocosahexaenoic acid synthesis.Reference of 2-Bromomethyl-1,3-dioxolane.

We report the first total synthesis of the polyunsaturated fatty acid 7-hydroxydocosahexaenoic acid (7-HDHA) in racemic form and the enantioselective synthesis of 7-(S)-HDHA. Both syntheses follow a convergent approach that unites the C1-C9 and C10-C22 fragments using Sonogashira coupling and Boland reduction as key steps. These syntheses enabled the unambiguous characterization of this natural product for the first time and helped establish 7(S)-HDHA as a possible endogenous ligand for peroxisome proliferator-activated receptor alpha.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Safety of 2-Bromomethyl-1,3-dioxolane. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2-Bromomethyl-1,3-dioxolane, is researched, Molecular C4H7BrO2, CAS is 4360-63-8, about Assembly of multicyclic isoquinoline scaffolds from pyridines: formal total synthesis of fredericamycin A. Author is Wang, Fang-Xin; Yan, Jia-Lei; Liu, Zhixin; Zhu, Tingshun; Liu, Yingguo; Ren, Shi-Chao; Lv, Wen-Xin; Jin, Zhichao; Chi, Yonggui Robin.

The construction of an isoquinoline skeleton typically starts with benzene derivatives as substrates with the assistance of acids or transition metals. Disclosed here is a concise approach to prepare isoquinoline analogs by starting with pyridines to react with β-ethoxy α,β-unsaturated carbonyl compounds under basic conditions. Multiple substitution patterns and a relatively large number of functional groups (including those sensitive to acidic conditions) can be tolerated the method. In particular, protocol allows for efficient access to tricyclic isoquinolines found in hundreds of natural products with interesting bioactivities. The efficiency and operational simplicity of introducing structural complexity into the isoquinoline frameworks can likely enable the collective synthesis of a large set of natural products. Here show that fredericamycin A could be obtained via a short route by using isoquinoline synthesis as a key step.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《N-Oxides of nicotinic acid and its esters》. Authors are Clemo, G. R.; Koenig, H..The article about the compound:Methyl 5-fluoro-3-pyridinecarboxylatecas:455-70-9,SMILESS:COC(=O)C1=CC(F)=CN=C1).Reference of Methyl 5-fluoro-3-pyridinecarboxylate. Through the article, more information about this compound (cas:455-70-9) is conveyed.

Nicotinic acid (I) (1 part) in 3 parts glacial AcOH and 3 parts H2O2, heated 3 hrs. on the water bath, gives 70-80% of the N-oxide (II), pale yellow, m. 249° (decomposition); impure II, heated at 100°, decompose spontaneously. II (1 g.) in 20 ml. MeOH, saturated with HCl at 0° and refluxed 2 hrs., gives 0.5 g. of the Me ester, m. 97°; Et ester (III), m. 99.5°. The Et ester of I (2 g.), 10 ml. AcOH, and 30 ml. H2O2, heated 3 hrs. on the water bath, give 1.1 g. III.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Name: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide, is researched, Molecular C11H13OP, CAS is 707-61-9, about A novel conversion of erythro phospholane epoxides to one-carbon atom homologated allylic alcohols. Author is Reddy, Valluru Krishna; Haritha, Buchammagari; Oshikawa, Tatsuo; Yamashita, Mitsuji.

A novel synthetic approach is described to incorporate one more C atom at C-2 position of phospholane oxides as homologated allylic alc. I by treatment of erythro-2,3-epoxy-3-methylphospholane 1-oxides, e.g., II (R = Ph, C6H4NO2-m, C6H4OMe-p, OMe, OEt, OPr-i), with excess of dimethylsulfonium methylide.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Kerek, F.; Ostrogovich, G. researched the compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9 ).Computed Properties of C11H13OP.They published the article 《NMR and uv spectral studies of some 1-aryl-substituted 3-methyl-2-phospholene oxides》 about this compound( cas:707-61-9 ) in Revue Roumaine de Chimie. Keywords: phospholene aryl oxide NMR UV. We’ll tell you more about this compound (cas:707-61-9).

The NMR and uv spectra of 7 1-aryl-3-methyl-2-phospholene oxides (I, R = H, Me, NMe2, etc.) are discussed. The value of 25 cps for the coupling constants of the P atom with vinylic protons indicates a Δ2,3 position of the phospholene ring double bond. The linear correlation of the bathochromic shift values with substituent constants (σ°) shows a low conjugative interaction between the benzene ring and the phosphoryl group.

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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem