Tag: M.W:100-200

Recommanded Product: 4045-24-3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 4-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Development of peptide epoxyketones as selective immunoproteasome inhibitors. Author is Li, Xuemei; Hong, Duidui; Zhang, Mengmeng; Xu, Lei; Zhou, Yubo; Li, Jia; Liu, Tao.

A series of epoxyketone analogs with varying N-caps and P3-configurations were designed, synthesized and evaluated. We found that D-Ala in P3 was crucial for β5i selectivity over β5c. Notably, compounds (I) (R1 = II) (β5i IC50 = 26.0 nM, 25-fold selectivity) and I (r1 = III) (β5i IC50 = 25.1 nM, 24-fold selectivity) with the D-configuration at P3 were the most selective inhibitors. Although I (R1 = II and III) showed only moderate anti-proliferative activity against RPMI-8226 and MM.1S cell lines, based on our experiments, it indicates that the inhibition of β5i alone is not sufficient to exert anticancer effects and may rely on the complementary inhibition of β1i, β5c and β5i. These data further increase our understanding of immunoproteasome inhibitors in hematol. malignancies.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 34941-92-9, is researched, Molecular C5H3ClFN, about Access to Highly Substituted 7-Azaindoles from 2-Fluoropyridines via 7-Azaindoline Intermediates, the main research direction is azaindole preparation; azaindoline preparation regioselective electrophilic substitution bromination nitration oxidation; fluoronitroethylpyridine preparation oxidative Nef reaction reductive amination intramol SNAr; nitroolefin fluoropyridine metalation addition.COA of Formula: C5H3ClFN.

A versatile synthesis of 7-azaindoles e. g., I, from substituted 2-fluoropyridines is described. C3-metalation and 1,4-addition to nitroolefins provide substituted 2-fluoro-3-(2-nitroethyl)pyridines. A facile oxidative Nef reaction/reductive amination/intramol. SNAr sequence furnishes 7-azaindolines. Finally, optional regioselective electrophilic C5-substitution (e.g., bromination or nitration) and subsequent in situ oxidation delivers highly functionalized 7-azaindoles in high overall efficiency.

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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – 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 Aliphatic and aromatic glucosides from Anoectochilus koshunensis, published in 1993-07-31, which mentions a compound: 58081-05-3, Name is (R)-4-Hydroxydihydrofuran-2(3H)-one, Molecular C4H6O3, HPLC of Formula: 58081-05-3.

A new simple aliphatic glucoside, 3-(R)-3-β-D-glucopyranosyloxybutanolide (kinsenoside) with its congeners and a heterocyclic aromatic glucoside, β-glucopyranosyl-3-pyridinemethanol (nicoloside) were isolated from whole plants of A. koshunensis. Their structures were elucidated from chem. and spectroscopic evidence.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

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, ChemSusChem called Chemoselective CaO-Mediated Acylation of Alcohols and Amines in 2-Methyltetrahydrofuran, Author is Pace, Vittorio; Hoyos, Pilar; Alcantara, Andres R.; Holzer, Wolfgang, which mentions a compound: 58081-05-3, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3, Recommanded Product: (R)-4-Hydroxydihydrofuran-2(3H)-one.

Calcium oxide is proposed as an innocuous acid scavenger for the chemoselective synthesis of amide- and ester-type compounds Although these mols. have wide spread applications in organic and pharmaceutical chem., and a large number of routes have been designed for their synthesis, the development of more efficient and environmentally friendly acylation strategies remains an ongoing challenge. The use of CaO allows for the stoichiometric acylation of primary alcs. in the presence of phenols or tertiary alcs.; amines can also be subjected to acylation reactions in the presence of hydroxyl groups. Chirality is obtained through acylation if the starting material is an optically pure alc. or if a chiral acylating agent is used. Furthermore, the use of 2-methyltetrahydrofuran (2-MeTHF), a more ecofriendly solvent, leads to maximized yields. This protocol is successfully applied to the synthesis of an interesting N-aryloxazolidin-2-one intermediate for the preparation of linezolid-type compounds

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 58081-05-3, is researched, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3Journal, Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) called Chiroptical properties of lactones. II. Electronic rotatory strengths of the n .far. π* transition in saturated γ- and δ-lactones, Author is Richardson, Frederick S.; Pitts, William, the main research direction is lactone chiroptical property MO; CD lactone INDO; energy level transition lactone; ionization potential lactone MO; dipole moment lactone MO; butyrolactone chiroptical property MO; valerolactone chiroptical property MO.SDS of cas: 58081-05-3.

The chiroptical properties associated with the n→π* transition of dissymmetric saturated γ- and δ-lactones were calculated and relations between the chiroptical observables and the stereochem. and electronic structural features were examined The calculations were based on the INDO MO method for the electronic structure of the mol. systems and excited states were constructed in the virtual orbital-CI approximation The highest and second highest occupied orbitals calculated for each of the 17 structures studied are, resp., the inplane n and the out-of-plane π° nonbonding orbitals localized on the O:CO group. The lowest lying singlet state is nπ* and the calculated transition wavelengths for transitions in this state are 197-230 nm. The calculated n→π* rotatory strengths and dissymmetry factors agree with experiment

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Name: 4-Methoxypiperidine. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 4-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Copper-Catalyzed ortho-Selective Dearomative C-N Coupling of Simple Phenols with O-Benzoylhydroxylamines. Author is Yao, Zhi-Li; Wang, Lei; Shao, Nan-Qi; Guo, Yin-Long; Wang, Dong-Hui.

In the presence of Cu(OTf)2 and LiOt-Bu in THF, 2,6-disubstituted phenols such as 2,6-dimethylphenol underwent regioselective dearomative coupling reactions with secondary O-benzoylhydroxylamines such as 4-(benzoyloxy)morpholine to yield aminocyclohexadienones such as I. Lack of inhibition with radical trapping agents, lack of rearrangement with a cyclopropylated phenol, and mass spectrometric detection of intermediates in the reaction support a mechanism involving either a single-electron transfer process involving attack of an N-centered radical onto the phenol or a two-electron pathway involving addition of phenol to an electrophilic Cu(III)-amino complex via an inner-sphere process.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Choi, Hyukjae; Mascuch, Samantha J.; Villa, Francisco A.; Byrum, Tara; Teasdale, Margaret E.; Smith, Jennifer E.; Preskitt, Linda B.; Rowley, David C.; Gerwick, Lena; Gerwick, William H. published the article 《Honaucins A-C, Potent Inhibitors of Inflammation and Bacterial Quorum Sensing: Synthetic Derivatives and Structure-Activity Relationships》. Keywords: honaucin structure activity relationship inflammation.They researched the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ).Product Details of 58081-05-3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:58081-05-3) here.

Honaucins A-C were isolated from the cyanobacterium Leptolyngbya crossbyana which was found overgrowing corals on the Hawaiian coast. Honaucin A consists of (S)-3-hydroxy-γ-butyrolactone and 4-chlorocrotonic acid, which are connected via an ester linkage. Honaucin A and its two natural analogs exhibit potent inhibition of both bioluminescence, a quorum-sensing-dependent phenotype, in Vibrio harveyi BB120 and lipopolysaccharide-stimulated nitric oxide production in the murine macrophage cell line RAW264.7. The decrease in nitric oxide production was accompanied by a decrease in the transcripts of several proinflammatory cytokines, most dramatically interleukin-1β. Synthesis of honaucin A, as well as a number of analogs, and subsequent evaluation in anti-inflammation and quorum-sensing inhibition bioassays revealed the essential structural features for activity in this chem. class and provided analogs with greater potency in both assays.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

HPLC of Formula: 4045-24-3. 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. Compound: 4-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Lanthanide-Catalyzed Tandem Addition of Amines to Cyanoalkenes: Synthesis of Cyclic Amidines.

A tandem insertion of aliphatic nitriles and unactivated alkenes RCH(CN)CH2C(R1)=C(R2)R3 (R = Ph, 2-thienyl, 3-pyridinyl, etc.; R1 = H, Me; R2 = H, Me, Ph, 2-naphthyl, etc.; R3 = H, Me) to the N-H bond of secondary aliphatic amines such as dibenzylamine, pyrrolidine, thiomorpholine, etc. catalyzed by simple trialkyl rare-earth metal complexes was disclosed. This reaction provides a highly atom-economic and stereoselective way to a range of cyclic amidines I (R4 = benzyl(methyl)aminyl, tetrahydroisoquinolin-2-yl, thiomorpholin-4-yl, etc.) under mild reaction conditions.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Copper-Catalyzed ortho-Selective Dearomative C-N Coupling of Simple Phenols with O-Benzoylhydroxylamines, published in 2019-08-02, which mentions a compound: 4045-24-3, mainly applied to aminocyclohexadienone regioselective preparation; copper catalyst regioselective dearomative coupling phenol benzoylhydroxylamine; mechanism lack radical inhibition dearomative coupling phenol benzoylhydroxylamine, Application of 4045-24-3.

In the presence of Cu(OTf)2 and LiOt-Bu in THF, 2,6-disubstituted phenols such as 2,6-dimethylphenol underwent regioselective dearomative coupling reactions with secondary O-benzoylhydroxylamines such as 4-(benzoyloxy)morpholine to yield aminocyclohexadienones such as I. Lack of inhibition with radical trapping agents, lack of rearrangement with a cyclopropylated phenol, and mass spectrometric detection of intermediates in the reaction support a mechanism involving either a single-electron transfer process involving attack of an N-centered radical onto the phenol or a two-electron pathway involving addition of phenol to an electrophilic Cu(III)-amino complex via an inner-sphere process.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – 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.Seebach, Dieter; Eberle, Martin researched the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ).Recommanded Product: (R)-4-Hydroxydihydrofuran-2(3H)-one.They published the article 《(R)-Ethyl 4-tert-butoxy-3-hydroxybutanoate, a versatile chiral building block for EPC (enantiomerically pure compound) syntheses, by yeast reduction of ethyl 4-tert-butoxy-3-oxobutanoate》 about this compound( cas:58081-05-3 ) in Synthesis. Keywords: butoxyoxobutanoate stereoselective reduction yeast; butoxyhydroxybutanoate; chiral hydroxy ester preparation. We’ll tell you more about this compound (cas:58081-05-3).

Treatment of ROCH2COCH2CO2R1 (I; R = Me3C, R1 = Et) with baker’s yeast and sucrose in H2O at 28° for 4 days gave 72% (R)-ROCH2CH(OH)CH2CO2R1 (II; R = Me3C, R1 = Et) in 97% enantiomeric excess. Similar treatment of I (R = Me3C, R1 = Me; R = PhCH2, R1 = Et) gave 70 and 58% II in 82 and 56% enantiomeric excess resp.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem