Category: 500-22-1

An article An L-threonine aldolase for asymmetric synthesis of beta-hydroxy-alpha-amino acids WOS:000573599600004 published article about DYNAMIC KINETIC RESOLUTION; ESCHERICHIA-COLI; SUBSTRATE; MECHANISM in [Wang, Li-Chao; Xu, Lian; Su, Bing-Mei; Lin, Juan] Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Peoples R China; [Wang, Li-Chao; Xu, Lian; Xu, Xin-Qi; Su, Bing-Mei; Lin, Juan] Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Peoples R China in 2020.0, Cited 33.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. Quality Control of 3-Pyridinecarboxaldehyde

L-threonine aldolase (LTA) is a PLP-dependent enzyme that can reversibly catalyze aldol reaction of glycine and acetaldehyde to produce beta-hydroxy-alpha-amino acids. In the present work, a putative Ita gene from Actinocorallia herbida (AhLTA) was mined and over-expressed in Escherichia coli BL21 (DE3). The substrate spectrum assay indicated that AhLTA only used glycine as donor substrate and tolerated a wild range of aromatic aldehydes as acceptor substrates. It was found that the type and position of substituents in the aromatic aldehydes exerted a significant impact on the activity and stereoselectivity at beta-carbon of AhLTA. Among those substrates, AhLTA could catalyze glycine and 4-methylsulphonyl benzaldehyde (14a) to produce L-threo-4-methylsulfonylphenylserine ((2S,3R)-14b) with high conversion (94.4%) and moderate stereoselectivity (19% de). By conditional optimization, the de value of (2S, 3R)-14b was improved to 61% and the conversion was 75%. Taken together, our study suggested that AhLTA might be a promising catalyst for producing chiral beta-hydroxy-alpha-amino acids. (C) 2020 Elsevier Ltd. All rights reserved.

Quality Control of 3-Pyridinecarboxaldehyde. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Wang, LC; Xu, L; Xu, XQ; Su, BM; Lin, J or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recently I am researching about ONE-POT SYNTHESIS; DERIVATIVES; INHIBITORS; ALDEHYDES; DESIGN, Saw an article supported by the University of Kashan [159189/40]. SDS of cas: 500-22-1. Published in UNIV KASHAN PRESS in KASHAN ,Authors: Bamoniri, A; Mirjalili, BBF; Yaghmaeiyan-Mahabadi, N. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde

Kaolinite clay found its application in medicine, in toothpaste, in cosmetic and as a food additive. Recently, a specially formulated spray is used in fruit and vegetable production to repel the insects and prevent sunburn. Kaolin-SO3H nanoparticles were prepared via reaction of kaolin and chlorosulfonic acid and characterized by FT-IR, XRD, FESEM, TEM, XRF, EDS, BET and TGA. 2-Substituted benzimidazoles have been used as selective neuropeptides YY, receptor antagonists, antitumor, antivirus, antimicrobial, antioxidant, antiparasitic, antihelmintics, antiproliferative, anti-HIV, anticonvulsant, anti-inflammatory, antihypertensive, antineoplastic, analgesicand antitrichinellosis, topoisomerase IV inhibitors, potent inhibitors of TiE-2 and VEGFER-2 tyrosine kinase receptor, and 5-HT3 antagonists. 2-Substituted benzimidazoles are prepared via condensation of o-phenylenediamines and aldehydes. In this article, we have used Kaolin-SO3H nanoparticles for the synthesis of 2-substituted benzimidazoles under mild reaction conditions. The structure of products were identified by FT-IR, H-1-NMR and C-13-NMR. This method has the advantages of high yields, short reaction times and easy work-up.

SDS of cas: 500-22-1. Bye, fridends, I hope you can learn more about C6H5NO, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recommanded Product: 500-22-1. I found the field of Chemistry; Science & Technology – Other Topics; Engineering very interesting. Saw the article Ion-Tagged Chiral Ligands for Asymmetric Transfer Hydrogenations in Aqueous Medium published in 2019.0, Reprint Addresses Bica, K (corresponding author), Vienna Univ Technol, Inst Appl Synthet Chem, Getreidemarkt 9-163, A-1060 Vienna, Austria.. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde.

We report the design and synthesis of novel ion-tagged chiral ligands for asymmetric transfer hydrogenation (ATH) in aqueous medium. Based on (R,R)-1,2-diphenylethylene diamine (DPEN) as structural motif, a straightforward three-step protocol was developed that gave access to novel chiral ligands with carbamate-substructure and pyridinium headgroup. The careful optimization of steric and electronic properties in combination with the adaption of solubility via choice of the anion gave a set of chiral and water-soluble ligands for use in ruthenium-catalyzed asymmetric transfer hydrogenations in aqueous medium. Eventually, a pool of aliphatic and aromatic ketones as well as two imine substrates were reduced with excellent isolated yields up to 95% and enantioselectivities >90% ee under environmentally benign conditions in the absence of additional surfactants.

Welcome to talk about 500-22-1, If you have any questions, you can contact Palvolgyi, AM; Bitai, J; Zeindlhofer, V; Schroder, C; Bica, K or send Email.. Recommanded Product: 500-22-1

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Application In Synthesis of 3-Pyridinecarboxaldehyde. Recently I am researching about CATALYZED TANDEM CYCLOISOMERIZATION; HIGHLY EFFICIENT; N-HETEROCYCLES; AMINES; FUNCTIONALIZATION; CASCADE; ALKALOIDS; ALKYNES; ACCESS; AMIDES, Saw an article supported by the National Key Research and Development Program of China [2017YFD0201404]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21873051]; Natural Science Foundation of Tianjin CityNatural Science Foundation of Tianjin [17JCZDJC37300]; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin). Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Wang, WL; Cao, XH; Xiao, WG; Shi, XY; Zuo, XD; Liu, LY; Chang, WX; Li, J. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde

We reported a novel two-step stereoselective synthesis of functionalized pyrrolidines from homopropargylic sulfonamides and nucleophiles via an isolable N,O-acetal intermediates. This reaction features mild conditions and good scope of substrates. In addition, the use of hexafluoroisopropanol, acting as a solvent, an additive, a weak nucleophile, and a good leaving group, is pivotal to the success of the method. Moreover, reactions of chiral homopropargylic sulfonamides afford only 2,5-cis-disubstituted pyrrolidines with high diastereoselectivity (up to >99:1 dr) and enantioselectivity (up to >99% ee). The overall reaction constitutes a formal 1,1-bifunctionalization of terminal alkynes, which has hitherto been reported only rarely. Additionally, this method provides efficient access to pharmaceutical intermediate and to carry out postmodification of natural products.

Application In Synthesis of 3-Pyridinecarboxaldehyde. Welcome to talk about 500-22-1, If you have any questions, you can contact Wang, WL; Cao, XH; Xiao, WG; Shi, XY; Zuo, XD; Liu, LY; Chang, WX; Li, J or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2019.0 ACS CHEM BIOL published article about QUORUM-SENSING SYSTEMS; PLATE-BASED ASSAY; SIGNAL; VIRULENCE; MOTILITY; CELL; LAS; PATHOGENESIS; DISCOVERY; TARGETS in [Aleksic, Ivana; Jeremic, Jelena; Milivojevic, Dusan; Ilic-Tomic, Tatjana; Opsenica, Dejan M.; Senerovic, Lidija] Univ Belgrade, Inst Mol Genet & Genet Engn, Vojvode Stepe 444a, Belgrade 11010, Serbia; [Segan, Sandra] Univ Belgrade, Inst Chem Technol & Met, Njegoseva 12, Belgrade 11000, Serbia; [Zlatovic, Mario] Univ Belgrade, Fac Chem, Studentski Trg 12-16, Belgrade 11158, Serbia; [Opsenica, Dejan M.] Univ Belgrade, ICTM, Ctr Excellence Environm Chem & Engn, Belgrade 11000, Serbia; [Jeremic, Jelena] Ctr Struct Syst Biol, Notkestr 85, D-22607 Hamburg, Germany in 2019.0, Cited 47.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. Formula: C6H5NO

Pseudomonas aeruginosa is a leading cause of nosocomial infections that are becoming increasingly difficult to treat due to the occurrence of antibiotic resistant strains. Since P. aeruginosa virulence is controlled through quorum sensing, small molecule treatments inhibiting quorum sensing signaling pathways provide a promising therapeutic option. Consequently, we synthesized a series of N-octaneamino-4-aminoquinoline derivatives to optimize this chemotype’s antivirulence activity against P. aeruginosa via inhibition of pyocyanin production. The most potent derivative, which possesses a benzofuran substituent, provided effective inhibition of pyocyanin production (IC50 = 12 mu M), biofilm formation (BFIC50 = 50 mu M), and motility. Experimentally, the compound’s activity is achieved through competitive inhibition of PqsR, and structure-activity data were rationalized using molecular docking studies.

Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Aleksic, I; Jeremic, J; Milivojevic, D; Ilic-Tomic, T; Segan, S; Zlatovic, M; Opsenica, DM; Senerovic, L or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2020.0 BIOORG CHEM published article about BIOLOGICAL EVALUATION; MOLECULAR-MECHANISMS; CINNAMALDEHYDE; DESIGN; REACTIVITY; INHIBITORS; TOXICITY in [Omar, Abdelsattar M.; El-Araby, Moustafa E.; Malebari, Azizah M.] King Abdulaziz Univ, Fac Pharm, Dept Pharmaceut Chem, Jeddah 21589, Saudi Arabia; [Omar, Abdelsattar M.] Al Azhar Univ, Fac Pharm, Dept Pharmaceut Chem, Cairo 11884, Egypt; [Abdelghany, Tamer M.; Abdel-Bakky, Mohamed S.] Al Azhar Univ, Fac Pharm, Dept Pharmacol, Cairo 11884, Egypt; [Safo, Martin K.; Ahmed, Mostafa H.] Virginia Commonwealth Univ, Dept Med Chem, Sch Pharm, Richmond, VA 23298 USA; [Safo, Martin K.; Ahmed, Mostafa H.] Virginia Commonwealth Univ, Inst Struct Biol Drug Discovery & Dev, Sch Pharm, Richmond, VA 23298 USA; [Boothello, Rio; Patel, Bhaumik B.] Virginia Commonwealth Univ, Dept Med, Div Hematol & Oncol, Richmond, VA 23298 USA; [Boothello, Rio; Patel, Bhaumik B.] Massey Canc Ctr, Richmond, VA 23298 USA; [Boothello, Rio; Patel, Bhaumik B.] Hunter Holmes McGuire VA Med Ctr, Richmond, VA 23249 USA; [Ahmed, Hany E. A.] Taibah Univ, Coll Pharm, Pharmacognosy & Pharmaceut Chem, Al Madinah Al Munawarah 47114, Saudi Arabia; [Ahmed, Hany E. A.] Al Azhar Univ, Fac Pharm, Dept Pharmaceut Organ Chem, Cairo 11884, Egypt; [Elhaggar, Radwan S.] Helwan Univ, Fac Pharm, Dept Pharmaceut Chem, Cairo 11790, Egypt in 2020.0, Cited 38.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. HPLC of Formula: C6H5NO

Curcumin and trans-cinnamaldehyde are acrolein-based Michael acceptor compounds that are commonly found in domestic condiments, and known to cause cancer cell death via redox mechanisms. Based on the structural features of these compounds we designed and synthesized several 2-cinnamamido-N-substituted-cinnamamide (bis-cinnamamide) compounds. One of the derivatives, (Z)-2-[(E)-cinnamamido]-3-phenyl-N-propylacrylamide 8 showed a moderate antiproliferative potency (HCT-116 cell line inhibition of 32.0 mu M), no inhibition of normal cell lines C-166, and proven cellular activities leading to apoptosis. SAR studies led to more than 10-fold increase in activity. Our most promising compound, [(Z)-3-(1H-indol-3-yl)-N-propyl-2-[(E)-3-(thien-2-yl)propenamido) propenamide] 45 killed colon cancer cells at IC50 = 0.89 mu M (Caco-2), 2.85 mu M (HCT-116) and 1.65 mu M (HT -29), while exhibiting much weaker potency on C-166 and BHK normal cell lines (IC50 = 71 mu M and 77.6 mu M, respectively). Cellular studies towards identifying the compounds mechanism of cytotoxic activities revealed that apoptotic induction occurs in part as a result of oxidative stress. Importantly, the compounds showed inhibition of cancer stem cells that are critical for maintaining the potential for self-renewal and stemness. The results presented here show discovery of covalently acting Michael addition compounds that potently kill cancer cells by a defined mechanism, with prominent selectivity profile over non-cancerous cell lines.

HPLC of Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Omar, AM; El-Araby, ME; Abdelghany, TM; Safo, MK; Ahmed, MH; Boothello, R; Patel, BB; Abdel-Bakky, MS; Malebari, AM; Ahmed, HEA; Elhaggar, RS or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

I found the field of Chemistry very interesting. Saw the article Unravelling the potency of 4,5-diamino-4H-1,2,4 triazole-3-thiol derivatives for kinase inhibition using a rational approach published in 2019.0. Recommanded Product: 500-22-1, Reprint Addresses DuttKonar, A (corresponding author), Rajiv Gandhi Technol Univ, Sch Pharmaceut Sci, Airport Bypass Rd, Bhopal 462033, India.; DuttKonar, A (corresponding author), Rajiv Gandhi Technol Univ, Dept Chem, Bhopal, India.. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde

The discovery of potent kinase inhibitors with tunable selectivity and specificity has gained significant impetus in the last few decades. In accordance with this development, herein, we report the design and synthesis of a series of new heterocyclic derivatives comprising a 1,2,4 triazole nucleus, tethered to two flexible linkers on either side, utilizing a simple Schiff base approach (compounds 1-16). The compounds were characterised by various spectroscopic techniques and their biological evaluation was conducted using kinase inhibition assay on two targets, namely CLK1 and DYRK1A. Our investigation reveals that compounds 3-5 bearing hydroxy/methoxy substituents in the aromatic ring display excellent potency towards the receptors in the micromolar range. Indeed, compound 5 bearing a methoxy substitution at the meta position possesses the added advantage of being highly specific towards CLK1 among the targets. To reinforce this observation, we performed molecular modelling studies with the kinase inhibitors hymenialdisine (HMD) cocrystallized with CLK1 and harmine (HA) cocrystallized with DYRK1A kinases as references. We speculate that in either target, the cause of such high potency and selectivity might be attributed to the involvement of flexible linkers on either side of the triazole core, which might have compelled the ligands to enter into the active site of the receptor and maximize non-covalent interactions. Interestingly, we consider the selectivity of compound 5 to be due to the involvement of a H-bond between SH of triazole and Glu 169 carbonyl in the receptor, which is absent in the other derivatives for both targets. Thus, our efforts focus on how the variation/position of substituents in the inhibitors has a profound impact on potency and selectivity. Indeed, this work establishes innovative design principles towards the development of a therapeutic agent for the treatment of neurodegenerative diseases like that of Alzheimers.

Welcome to talk about 500-22-1, If you have any questions, you can contact Jain, AK; Karthikeyan, C; McIntosh, KD; Tiwari, AK; Trivedi, P; DuttKonar, A or send Email.. Recommanded Product: 500-22-1

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Quality Control of 3-Pyridinecarboxaldehyde. In 2019.0 ANTI-CANCER AGENT ME published article about ANTICANCER ACTIVITY; BIOLOGICAL EVALUATION; KINASE INHIBITORS; MOLECULAR DOCKING; DISCOVERY; DESIGN; POTENT; ROUTES in [Moghadam, Ebrahim S.; Tehrani, Maryam H.; Amini, Mohsen] Univ Tehran Med Sci, TIPS, Fac Pharm, Dept Med Chem, Tehran 1417614411, Iran; [Moghadam, Ebrahim S.; Tehrani, Maryam H.; Amini, Mohsen] Univ Tehran Med Sci, TIPS, Drug Design & Dev Res Ctr, Tehran 1417614411, Iran; [Csuk, Rene; Fischer, Lucie] Martin Luther Univ Halle Wittenberg, Organ Chem, Kurt Mothes Str 2, D-06120 Halle, Saale, Germany; [Faramarzi, Mohammad Ali; Rashidi, Arezoo] Univ Tehran Med Sci, Fac Pharm, Dept Pharmaceut Biotechnol, Tehran, Iran; [Faramarzi, Mohammad Ali; Rashidi, Arezoo] Univ Tehran Med Sci, Biotechnol Res Ctr, Tehran, Iran; [Rashidi, Arezoo; Javadi, Iraj] Islamic Azad Univ, Fac Pharm, Dept Toxicol, Shahreza Branch, Shahreza, Iran in 2019.0, Cited 45.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

Background: During last recent years number of anti-tubulin agents were introduced for treatment of diverse kind of cancer. Despite of their potential in treatment of cancer, drug resistance and adverse toxicity such as peripheral neuropathy are some of the negative criteria of anti-tubulin agents. Methods: Twenty seven quinazoline derivatives were synthesized using a multicomponent reaction. The cytotoxicity of compounds 1-27 was tested in SRB assays employing five different human tumor cell lines. Effect of two of active compounds on tubulin polymerization was also checked using a commercially available assay kit. Molecular modelling studies were also performed using autodock tools software. Results: SRB assays showed that compounds 2, 9, 16 and 26, being highly cytotoxic with IC50 values ranging between 2.1 and 14.3 mu M. The possible mode of action of compounds, 2, 9, 16 and 26, and the taxol binding site of the protein tubulin, an important goal for antimitotic drugs, was also studied by molecular docking, which showed reasonable interactions with tubulin active site, followed by investigation of the effects of compounds 9 and 16 on the polymerization of tubulin. The results showed the tested compounds to be highly active as inducers of tubulin polymerization. Conclusion: Altogether, with respect to obtained results, it is attractive and beneficial to further investigation on quinazoline scaffold as antimitotic agents.

Bye, fridends, I hope you can learn more about C6H5NO, If you have any questions, you can browse other blog as well. See you lster.. Quality Control of 3-Pyridinecarboxaldehyde

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recently I am researching about DIFFERENT PSEUDOENANTIOMERIC ORGANOCATALYSTS; MANNICH REACTIONS; EFFICIENT ORGANOCATALYST; PRACTICAL SYNTHESIS; SULFONAMIDE; ALDEHYDES; WATER, Saw an article supported by the MEXT, JapanMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [JP26220803, JP17H06450]; International Scientific Partnership Program (ISPP) at the King Saud University [0072]. Published in GEORG THIEME VERLAG KG in STUTTGART ,Authors: Lee, HJ; Arumugam, N; Almansour, AI; Kumar, RS; Maruoka, K. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde. HPLC of Formula: C6H5NO

A new type of optically pure primary amino aromatic Tf-amide organocatalyst can be easily prepared from 8-amino-1-tetralone, and its chemical behavior was investigated in the context of asymmetric aldol and Mannich reactions. Most notably, the asymmetric aldol reaction proceeded smoothly in brine.

HPLC of Formula: C6H5NO. Bye, fridends, I hope you can learn more about C6H5NO, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Hosseini, A; Schreiner, PR in [Hosseini, Abolfazl; Schreiner, Peter R.] Justus Liebig Univ, Inst Organ Chem, Heinrich Buff Ring 17, D-35392 Giessen, Germany published Synthesis of Exclusively 4-Substituted beta-Lactams through the Kinugasa Reaction Utilizing Calcium Carbide in 2019, Cited 55. SDS of cas: 500-22-1. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

A new Kinugasa reaction protocol has been elaborated for the one-pot synthesis of 4-substituted beta-lactams utilizing calcium carbide and nitrone derivatives. Calcium carbide is thereby activated by TBAF center dot 3H(2)O in the presence of CuCl/NMI. The ease of synthesis and use of inexpensive chemicals provides rapid access of practical quantities of beta-lactams exclusively substituted at position 4.

Bye, fridends, I hope you can learn more about C6H5NO, If you have any questions, you can browse other blog as well. See you lster.. SDS of cas: 500-22-1

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem