Tag: M.W:100-200

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 Nonbisphosphonate inhibitors of Plasmodium falciparum FPPS/GGPPS, published in 2021-06-01, which mentions a compound: 4045-24-3, mainly applied to azepanylpropyl azaheterocyclylalkyl arylthiazolecarboxamide heteroarylcarboxamide preparation antimalarial agent; structure azaheterocyclylalkyl arylthiazolecarboxamide inhibition malarial farnesyldiphosphate geranylgeranyldiphosphate synthase; lipophilicity solubility biol permeation metabolism antimalarial activity azepanylpropyl arylthiazolecarboxamide; Farnesyl/Geranylgeranyl diphosphate synthase; Malaria; Plasmodium falciparum; SAR; Thiazole, Application In Synthesis of 4-Methoxypiperidine.

A series of novel thiazole-containing amides such as I.TFA were synthesized as inhibitors of Plasmodium falciparum farnesyldiphosphate synthase (PfFPPS) and geranylgeranyldiphosphate synthase (PfGGPPS). A structure-activity relationship study of these compounds led to the identification of potent and selective PfFPPS/GGPPS inhibitors with good in vitro ADME profiles. The most promising candidate mols. were progressed to mouse in vivo PK studies and demonstrated adequate free drug exposure to warrant further investigation.

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

Synthetic Route of C4H6O3. 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: (R)-4-Hydroxydihydrofuran-2(3H)-one, is researched, Molecular C4H6O3, CAS is 58081-05-3, about 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 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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2,6-Dichloro-3-fluoropyridine(SMILESS: ClC1=NC(=CC=C1F)Cl,cas:52208-50-1) is researched.Synthetic Route of C4H6O3. The article 《New synthesis method of 2,6-dichloro-3-fluoropyridine》 in relation to this compound, is published in Huagong Shikan. Let’s take a look at the latest research on this compound (cas:52208-50-1).

2, 6-Dichloro-3-nitropyridine was synthesized from 2, 6-dichloropyridine by nitrification reaction. Then 2,6-dichloro-3-aminopyridine was synthesized from 2,6-dichloro-3-nitropyridine by the catalytic hydrogenation reduction reaction. At last, 2,6-dichloro-3-fluoropyridine was synthesized from 2,6-dichloro-3-aminopyridine by the diazotization reaction. Overall yield of three steps reaction was 69.3%. The target compound was confirmed by MS and NMR. The factors such as nitric acid concentration, the type and amount of catalyst and the molar ratio of sodium nitrite were discussed in detail. This synthesis route has high yield, high selectivity, and better prospect of industrialization.

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

Quality Control of 4-Methoxypiperidine. 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-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Optimization of WZ4003 as NUAK inhibitors against human colorectal cancer. Author is Yang, Huali; Wang, Xiaobing; Wang, Cheng; Yin, Fucheng; Qu, Lailiang; Shi, Cunjian; Zhao, Jinhua; Li, Shang; Ji, Limei; Peng, Wan; Luo, Heng; Cheng, Maosheng; Kong, Lingyi.

NUAK, the member of AMPK (AMP-activated protein kinase) family of protein kinases, is phosphorylated and activated by the LKB1 (liver kinase B1) tumor suppressor protein kinase. Recent work has indicated that NUAK1 is a key component of the antioxidant stress response pathway, and the inhibition of NUAK1 will suppress the growth and survival of colorectal tumors. As a promising target for anticancer drugs, few inhibitors of NUAK were developed. With this goal in mind, based on NUAK inhibitor WZ4003, a series of derivatives has been synthesized and evaluated for anticancer activity. Compound I, a derivative of WZ4003 by removing a methoxy group, was found to be the most potential one with stronger inhibitory against NUAK1/2 enzyme activity, tumor cell proliferation and inducing apoptosis of tumor cells. By in vivo efficacy evaluations of colorectal SW480 xenografts, I suppresses tumor growth more effectively with an excellent safety profile in vivo and is therefore seen as a suitable candidate for further investigation.

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Reference:
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 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, Name is 4-Methoxypiperidine, Molecular C6H13NO, Related Products 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

Application In Synthesis of 2,6-Dichloro-3-fluoropyridine. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dichloro-3-fluoropyridine, is researched, Molecular C5H2Cl2FN, CAS is 52208-50-1, about Synthesis of fluorinated pyridines by the Balz-Schiemann reaction. An alternative route to enoxacin, a new antibacterial pyridonecarboxylic acid. Author is Matsumoto, Junichi; Miyamoto, Teruyuki; Minamida, Akira; Nishimura, Yoshiro; Egawa, Hiroshi; Nishimura, Haruki.

Fluorination of the 2,6-disubstituted 3-aminopyridines I (R = SEt, pyrrolidino, 4-ethoxycarbonylpiperazino, 4-acetylpiperazino, R1 = NHAc; R = R1 = Cl) by the Balz-Schiemann reaction gave 3-pyridinediazonium tetrafluoroborates which were heated with or without a solvent to give the corresponding fluorinated pyridines, in good yields. 2-Substituted 6-acetylamino-3-fluoropyridines were converted by a known method into a series of 7-substituted 1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acids including enoxacin (II).

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

Related Products of 52208-50-1. 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: 2,6-Dichloro-3-fluoropyridine, is researched, Molecular C5H2Cl2FN, CAS is 52208-50-1, about 1,2,4-Triazolo-[1,5-a]pyridine HIF Prolylhydroxylase Domain-1 (PHD-1) Inhibitors With a Novel Monodentate Binding Interaction. Author is Ahmed, Saleh; Ayscough, Andrew; Barker, Greg R.; Canning, Hannah E.; Davenport, Richard; Downham, Robert; Harrison, David; Jenkins, Kerry; Kinsella, Natasha; Livermore, David G.; Wright, Susanne; Ivetac, Anthony D.; Skene, Robert; Wilkens, Steven J.; Webster, Natalie A.; Hendrick, Alan G..

Herein the authors describe the identification of 4-{[1,2,4]triazolo[1,5-a]pyridin-5-yl}benzonitrile-based inhibitors of the hypoxia-inducible factor prolylhydroxylase domain-1 (PHD-1) enzyme. These inhibitors were shown to possess a novel binding mode by x-ray crystallog., in which the triazolo N1 atom coordinates in a hitherto unreported monodentate interaction with the active site Fe2+ ion, while the benzonitrile group accepts a hydrogen-bonding interaction from the side chain residue of Asn 315. Further optimization led to potent PHD-1 inhibitors with good physicochem. and pharmacokinetic properties.

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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 Preparative-Scale Synthesis of Vedejs Chiral DMAP Catalysts, published in 2018-10-19, which mentions a compound: 34941-92-9, mainly applied to scalable synthesis chiral Vedejs type DMAP catalyst; amination pyridine zinc amine complex; mechanistic study zinc facilitated nucleophilic aromatic substitution, Recommanded Product: 34941-92-9.

A scalable synthesis of chiral Vedejs-type DMAP catalysts is reported. The key step of the synthesis is amination of the enantiomerically pure 4-chloropyridine derivative using well-defined ZnCl2(amine)2 complexes. A series of Zn(II)-amine complexes have been synthesized to explore the scope of the ZnCl2-mediated amination of 4-halopyridines. Mechanistic studies support a Zn(II)-facilitated nucleophilic aromatic substitution as a plausible mechanism for the chlorine-to-amine exchange.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-Methoxypiperidine(SMILESS: COC1CCNCC1,cas:4045-24-3) is researched.Recommanded Product: 34941-92-9. The article 《Visible-Light-Induced Photoaddition of N-Nitrosoalkylamines to Alkenes: One-Pot Tandem Approach to 1,2-Diamination of Alkenes from Secondary Amines》 in relation to this compound, is published in Organic Letters. Let’s take a look at the latest research on this compound (cas:4045-24-3).

The generation of aminium radical cation species from N-nitrosoamines is disclosed for the first time through visible-light excitation at 453 nm. The developed visible-light-promoted photoaddn. reaction of N-nitrosoamines to alkenes, e.g., 1H-Indene was combined with the o-NQ-catalyzed aerobic oxidation protocol of amines, e.g., 1,4-dioxa-8-azaspiro[4.5]decane to telescope the direct handling of harmful N-nitroso compounds, where the desired α-amino oxime derivatives e.g., I were obtained in a one-pot tandem N-nitrosation and photoaddn. sequence.

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – 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: 4-Methoxypiperidine, is researched, Molecular C6H13NO, CAS is 4045-24-3, about Identification of thiophene-benzenesulfonamide derivatives for the treatment of multidrug-resistant tuberculosis.Formula: C6H13NO.

A series of thiophene-benzenesulfonamide derivatives was designed and synthesized by exploring the structure-activity relationship of lead compounds 2,3-disubstituted thiophenes I and 297F II as antituberculosis agents, which displayed potent antimycobacterial activity against drug-susceptible and clin. isolated drug-resistant tuberculosis. In particular, compound III (-R1R2- = -(CH2)4-), which had improved activity (min. inhibitory concentration of 0.023 μg/mL) compared with the lead compounds, displayed good intracellular antimycobacterial activity in macrophages with a reduction of 1.29 log10 CFU. A druggability evaluation indicated that compound III (-R1R2- = -(CH2)4-) had favorable hepatocyte stability, low cytotoxicity, and low hERG channel inhibition. Moreover, compound III (-R1R2- = -(CH2)4-) exhibited modest in vivo efficacy in an acute mouse model of tuberculosis. In addition, the mol. docking study elucidated the binding mode of compound III (-R1R2- = -(CH2)4-) in the active site of DprE1. Therefore, compound III (-R1R2- = -(CH2)4-) may be a promising antituberculosis lead for further research.

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