Month: November 2021

An article New chalcone-type compounds and 2-pyrazoline derivatives: synthesis and caspase-dependent anticancer activity WOS:000531893000004 published article about BIOLOGICAL EVALUATION; ANTIHYPERGLYCEMIC EVALUATION; PYRAZOLINE DERIVATIVES; ANTIOXIDANT; BEARING; DESIGN; CANCER; MOIETY; ANTIBACTERIAL; IMIDAZOLE in [Chouiter, Mohamed, I; Boulebd, Houssem; Belfaitah, Ali] Univ Freres Mentouri Constantine, Fac Sci Exactes, Lab Prod Nat Origine Vegetale & Synthese Organ, Campus Chaabat Ersas, Constantine 25000, Algeria; [Pereira, David M.; Valentao, Patricia; Andrade, Paula B.] Univ Porto, Fac Farm, REQUIMTE LAQV, Lab Farmacognosia,Dept Quim, R Jorge Viterbo Ferreira 228, P-4050313 Porto, Portugal; [Silva, Artur M. S.] Univ Aveiro, QOPNA, P-3810193 Aveiro, Portugal; [Silva, Artur M. S.] Univ Aveiro, LAQV REQUIMTE, Dept Chem, P-3810193 Aveiro, Portugal in 2020, Cited 61. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. Recommanded Product: Chalcone

Aim: There is a continuous and urgent need for new anticancer agents with novel structures and target selectivity. Methods & results: The anticancer activity of the prepared compounds was assessed against human lung (A549) and stomach (AGS) cancer cell lines and evaluated in the noncancer human lung fibroblast (MRC-5) cell line. 2-Pyrazolines were devoid of toxicity in all cell lines used, chalcones bearing a beta-(benz)imidazole moiety being toxic toward AGS cell line. Mechanistic studies showed that these compounds trigger loss of cell viability and mitochondrial membrane potential, while eliciting morphological traits compatible with regulated cell death, which was ultimately shown to derive from caspase activation, specifically caspase-3. Conclusion: Chalcones 1-3 have been identified as new and promising anticancer agents toward the AGS cell line.

About Chalcone, If you have any questions, you can contact Chouiter, MI; Boulebd, H; Pereira, DM; Valentao, P; Andrade, PB; Belfaitah, A; Silva, AMS or concate me.. Recommanded Product: Chalcone

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

Authors Zeitoun, H; Khan, Z; Banerjee, K; Salameh, D; Lteif, R in MDPI published article about RESPONSE-SURFACE METHODOLOGY; TYROSINASE INHIBITORS; PHENOLIC-COMPOUNDS; ANTIOXIDANTS; LEAVES; FOOD in [Zeitoun, Hussein; Salameh, Dominique; Lteif, Roger] Univ St Joseph, Fac Sci, Ctr Anal & Rech, Unite Technol & Valorisat Alimentaire, Campus Sci & Technol,POB 11-514, Beirut 11072050, Lebanon; [Khan, Zareen; Banerjee, Kaushik] ICAR Natl Res Ctr Grapes, Natl Reference Lab, Pune 412307, Maharashtra, India in 2020.0, Cited 55.0. Recommanded Product: 94-41-7. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

Tyrosinase is an important component of the enzyme polyphenol oxidase, which upon contact with the phenolic substrates forms the pigment melanin and induces undesirable food browning. The phenolic and triterpenoid compounds that naturally occur in plants are well known as tyrosinase inhibitors. Combretum micranthum (CM) leaves, Euphorbia hirta (EH) plant, and Anacardium occidentale (AO) fruits are traditionally known to have potential anti-tyrosinase activities. The aim of this study was to optimize the ultrasound-assisted extraction of secondary metabolites from these matrices, and to evaluate in tubo the antityrosinase activity of these extracts. Efforts were also taken to profile the secondary metabolites, mainly the phenolic and triterpenoid compounds, in order to understand their probable association with tyrosinase inhibition. The optimal ultrasound-assisted extraction conditions for simultaneous extraction of phenolic, and triterpenoid compounds were determined. The aqueous fraction of these extracts showed significant antityrosinase activity, with the CM leaves exhibiting the strongest inhibitory effect (IC50 of 0.58 g.L-1). The predominant metabolic compounds from these natural extracts were putatively identified by using a high-resolution quadrupole-time of flight (QToF) LC-MS instrument. The high-resolution accurate mass-based screening resulted in identification of 88 predominant metabolites, which included dihydrodaidzein-7-O-glucuronide, micromeric acid, syringic acid, morin, quercetin-3-O-(6 ”-malonyl-glucoside), 4-hydroxycoumarin, dihydrocaffeic acid-3-O-glucuronide, to name some, with less than 5 ppm of mass error.

About Chalcone, If you have any questions, you can contact Zeitoun, H; Khan, Z; Banerjee, K; Salameh, D; Lteif, R or concate me.. Recommanded Product: 94-41-7

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

An article Palladium-Catalyzed Stereospecific Oxidative Cascade Reaction of Allenes for the Construction of Pyrrole Rings: Control of Reactivity and Selectivity WOS:000471212600046 published article about ARYLATING CARBOCYCLIZATION; REGIO; CYCLOISOMERIZATION; ALKALOIDS; EFFICIENT in [Li, Man-Bo; Backvall, Jan-E.] Stockholm Univ, Dept Organ Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden; [Grape, Erik Svensson] Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, SE-10691 Stockholm, Sweden in 2019.0, Cited 57.0. COA of Formula: C8H18O3. The Name is 1,1,1-Triethoxyethane. Through research, I have a further understanding and discovery of 78-39-7

A palladium-catalyzed oxidative cascade reaction of alpha-tosylamide allenes has been developed. The reactivity of the allenes is controlled by the tosylamide group. In the presence of terminal alkynes the reaction proceeds via a pathway leading to a one-pot construction of pyrrole rings. Moreover, a solvent-controlled chemoselectivity of the cascade reaction was realized, leading to a stereospecific and divergent synthesis of (Z)-tetrasubstituted olefins, 2,5-dihydropyrroles, and pyrroles. Enantioenriched (Z)-tetrasubstituted olefins and 2,5-dihydropyrroles are readily synthesized by chirality transfer using this approach.

About 1,1,1-Triethoxyethane, If you have any questions, you can contact Li, MB; Grape, ES; Backvall, JE or concate me.. COA of Formula: C8H18O3

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

Authors He, J; Jia, ZZ; Tan, HC; Luo, XH; Qiu, DC; Shi, JR; Xu, H; Li, Y in WILEY-V C H VERLAG GMBH published article about ENE REACTION; EFFICIENT SYNTHESIS; CARBON-CARBON; BENZYNE; CONSTRUCTION; PRECURSOR; CYCLOADDITIONS; DIAMINATION; ACTIVATION; GENERATION in [He, Jia; Jia, Zizi; Tan, Hongcheng; Luo, Xiaohua; Qiu, Dachuan; Shi, Jiarong; Xu, Hai; Li, Yang] Chongqing Univ, Sch Chem & Chem Engn, 174 Shazheng St, Chongqing 400030, Peoples R China in 2019.0, Cited 75.0. Category: thiazolidines. The Name is 1,1,1-Triethoxyethane. Through research, I have a further understanding and discovery of 78-39-7

A convenient and efficient domino aryne process was developed under transition-metal-free conditions to generate a range of tetra- and pentacyclic ring systems. This transformation was realized via a 1,2-benzdiyne through a nucleophilic and Diels-Alder reaction cascade using styrene as the diene moiety. Three new chemical bonds, namely one C-N and two C-C bonds, and two benzofused rings could be constructed concomitantly, which was made possible by distinct chemoselective control at both the 1,2-aryne and 2,3-aryne stages. Moreover, in-depth studies were carried out on the domino aryne precursors and controlling the diastereoselectivity.

Category: thiazolidines. About 1,1,1-Triethoxyethane, If you have any questions, you can contact He, J; Jia, ZZ; Tan, HC; Luo, XH; Qiu, DC; Shi, JR; Xu, H; Li, Y or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

Recently I am researching about ANTI-HIV ACTIVITY; CARBONYL-COMPOUNDS; EFFICIENT SYNTHESIS; CHEMOSELECTIVE ACETALIZATION; MONTMORILLONITE CLAY; ANTIFUNGAL ACTIVITY; IONIC LIQUID; KETONES; ALDEHYDES; ACETALS, Saw an article supported by the Tunis El-Manar University. Published in SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK in ANKARA ,Authors: Hagui, W; Essid, R; Amri, S; Feris, N; Khabbouchi, M; Tabbene, O; Limam, F; Srasra, E; Besbes, N. The CAS is 94-41-7. Through research, I have a further understanding and discovery of Chalcone. Computed Properties of C15H12O

A new heterogeneous acid catalyst based on a natural resource, Tunisian clay (Clay-H0.5), has been prepared and characterized by FT-IR, FE-SEM, and powder X-ray diffraction (XRD), as well as chemical composition, cation exchange capacity, specific surface area, and pore volume. Acid treatment for 0.5 h enlarged the surface area from 78.24 to 186.10 m(2)/g and pore volume (PV) from 0.186 to 0.281 cm(3)/g. The catalytic activity of this material was investigated in ketalization reaction under mild solvent-free conditions. This achieved up to 92% isolated yield for only 10 wt.% of the catalyst. This environmentally friendly method has advantages such as simple work-up procedure, avoidance of organic solvents, and good performance in ketalization reactions. Importantly, the Clay-H0.5 catalyst showed good recyclability where insignificant activity loss was exhibited even after six runs. Synthesized cyclic ketals were tested for their possible antileishmanial and antibacterial activities as well as antifungal activity. Biological screening showed that compound 11 had important antileishmanial activity against both L. major and L. infantum, while compound 14 also had significant antibacterial activity against four gram-positive and two gram-negative bacteria, and antifungal activity against Candida albicans, with minimal inhibitory concentration values ranging from 15.62 mu g/mL to 125 mu g/mL.

Computed Properties of C15H12O. About Chalcone, If you have any questions, you can contact Hagui, W; Essid, R; Amri, S; Feris, N; Khabbouchi, M; Tabbene, O; Limam, F; Srasra, E; Besbes, N or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

Jiang, ZW; Toffano, M; Vo-Thanh, G; Bournaud, C in [Jiang, Zhiwei; Toffano, Martial; Vo-Thanh, Giang; Bournaud, Chloee] Univ Paris Saclay, Inst Chim Mol & Mat Orsay, CNRS UMR 8182, Rue Doyen Georges Poitou, F-91405 Orsay, France published Bifunctional N-Heterocylic Carbene-Catalyzed Highly Enantioselective Trans-Cyclopentannulation of Enals and Enones via Homoenolate in 2021.0, Cited 117.0. Recommanded Product: Chalcone. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7.

An efficient and flexible synthesis of a new class of chiral bifunctional NHC catalyst has been reported. These new imidazolylidene NHCs, bearing a (thio)urea function as a hydrogen bond donor promoted efficiently highly diastereoselective trans-cyclopentannulation of enals and enones in moderate to good yields (up to 69 % yield) along with excellent enantioselectivity (up to 96 % ee). This methodology could be applied to a large variety of substrates (30 examples).

Recommanded Product: Chalcone. About Chalcone, If you have any questions, you can contact Jiang, ZW; Toffano, M; Vo-Thanh, G; Bournaud, C or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

An article Effect of substituents in the A and B rings of chalcones on antiparasite activity WOS:000559906700001 published article about IN-VITRO; DERIVATIVES; PARASITES; ANALOGS; HIT in [Gonzalez, Luis A.; Upegui, Yulieth A.; Echeverri, Fernando; Escobar, Gustavo; Quinones, Wiston] Univ Antioquia, Inst Quim, Fac Ciencias Exactas & Nat, Grp Quim Organ Prod Nat QOPN, Calle 70 52-21, Medellin 1226, Colombia; [Upegui, Yulieth A.; Robledo, Sara M.] Univ Antioquia, Fac Med, PECET, Medellin, Colombia; [Rivas, Luis] Ctr Invest Biol, Grp Invest Peptidos Antibiot Eucariot, Madrid, Spain in 2020.0, Cited 32.0. Product Details of 94-41-7. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

Chalcones are a group of natural products with many recognized biological activities, including antiparasitic activity. Although a lot of chalcones have been synthetized and assayed against parasites, the number of structural features known to be involved in this biological property is small. Thus, in the present study, 21 chalcones were synthesized to determine the effect of substituents in the A and B rings on the activity againstLeishmania braziliensis, Trypanosoma cruzi, andPlasmodium falciparum. The compounds were active againstL. braziliensisin a structure-dependent manner. Only one compound was very active againstT. cruzi, but none of them had a significant antiplasmodial activity. The electron-donating substituents in ring B and the hydrogen bonds at C-2 ‘ with carbonyl affect the antiparasitic activity.

Product Details of 94-41-7. About Chalcone, If you have any questions, you can contact Gonzalez, LA; Upegui, YA; Rivas, L; Echeverri, F; Escobar, G; Robledo, SM; Quinones, W or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

In 2019.0 TURK J CHEM published article about ANTI-HIV ACTIVITY; CARBONYL-COMPOUNDS; EFFICIENT SYNTHESIS; CHEMOSELECTIVE ACETALIZATION; MONTMORILLONITE CLAY; ANTIFUNGAL ACTIVITY; IONIC LIQUID; KETONES; ALDEHYDES; ACETALS in [Hagui, Wided; Amri, Sondes; Khabbouchi, Mohamed; Srasra, Ezzeddine; Besbes, Neji] Natl Ctr Res Mat Sci, Lab Composite Mat & Clay Minerals, Grp Green & Appl Organ Chem, Technopole Borj Cedria, Soliman, Tunisia; [Hagui, Wided; Amri, Sondes; Khabbouchi, Mohamed] Tunis El Manar Univ, Fac Sci Tunis, El Manar Tunis, Tunisia; [Essid, Rym; Feris, Nadia; Tabbene, Olfa; Limam, Ferid] Biotechnol Ctr Borj Cedria, Lab Bioact Subst, Technopole Borj Cedria, Soliman, Tunisia in 2019.0, Cited 78.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. COA of Formula: C15H12O

A new heterogeneous acid catalyst based on a natural resource, Tunisian clay (Clay-H0.5), has been prepared and characterized by FT-IR, FE-SEM, and powder X-ray diffraction (XRD), as well as chemical composition, cation exchange capacity, specific surface area, and pore volume. Acid treatment for 0.5 h enlarged the surface area from 78.24 to 186.10 m(2)/g and pore volume (PV) from 0.186 to 0.281 cm(3)/g. The catalytic activity of this material was investigated in ketalization reaction under mild solvent-free conditions. This achieved up to 92% isolated yield for only 10 wt.% of the catalyst. This environmentally friendly method has advantages such as simple work-up procedure, avoidance of organic solvents, and good performance in ketalization reactions. Importantly, the Clay-H0.5 catalyst showed good recyclability where insignificant activity loss was exhibited even after six runs. Synthesized cyclic ketals were tested for their possible antileishmanial and antibacterial activities as well as antifungal activity. Biological screening showed that compound 11 had important antileishmanial activity against both L. major and L. infantum, while compound 14 also had significant antibacterial activity against four gram-positive and two gram-negative bacteria, and antifungal activity against Candida albicans, with minimal inhibitory concentration values ranging from 15.62 mu g/mL to 125 mu g/mL.

COA of Formula: C15H12O. About Chalcone, If you have any questions, you can contact Hagui, W; Essid, R; Amri, S; Feris, N; Khabbouchi, M; Tabbene, O; Limam, F; Srasra, E; Besbes, N or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

In 2021.0 ORG LETT published article about ASYMMETRIC-SYNTHESIS; 3+2 CYCLOADDITION; CYCLOPROPANES; RINGS in [McDaniel, Jade; Farley, Christopher A.; Shi, Qing; Hynes, John, Jr.; Dhar, T. G. Murali; Marcoux, David] Bristol Myers Squibb, Dept Discovery Chem, Princeton, NJ 08540 USA; [Ramirez, Antonio; Han, Arthur; Gallagher, William P.; Gonzalez-Bobes, Francisco; Coombs, John R.] Bristol Myers Squibb, Chem Proc Dev, New Brunswick, NJ 08903 USA; [Sandhu, Bhupinder; Sarjeant, Amy] Bristol Myers Squibb, Mat Sci & Engn, New Brunswick, NJ 08903 USA in 2021.0, Cited 59.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. Safety of Chalcone

The use of the unprecedented annulating reagents methyl N-(tert-butylsulfinyl)-4-chlorobutanimidate and methyl N-(tert-butylsulfinyl)-5-bromopentanimidate enables the diastereoselective preparation of 5- and 6-membered carbocycles bearing three contiguous stereocenters. These synthons undergo cycloaddition with a variety of Michael acceptors to form cyclopentane/cyclohexane rings with excellent stereochemical control, generating only one of the eight possible diastereomers. This novel methodology has enabled the highly enantioselective and high yielding synthesis of novel chemotypes of pharmacological relevance.

Safety of Chalcone. About Chalcone, If you have any questions, you can contact McDaniel, J; Farley, CA; Ramirez, A; Sandhu, B; Sarjeant, A; Shi, Q; Han, A; Gallagher, WP; Hynes, J; Dhar, TGM; Gonzalez-Bobes, F; Coombs, JR; Marcoux, D or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

Sroda-Pomianek, K; Palko-Labuz, A; Pola, A; Ferens-Sieczkowska, M; Wesolowska, O; Koziol, A in [Sroda-Pomianek, Kamila; Palko-Labuz, Anna; Pola, Andrzej; Wesolowska, Olga] Wroclaw Med Univ, Dept Biophys & Neurobiol, Ul Chalubinskiego 3, PL-50368 Wroclaw, Poland; [Ferens-Sieczkowska, Miroslawa; Koziol, Agata] Wroclaw Med Univ, Dept Chem & Immunochem, Ul M Sklodowskiej Curie 48-50, PL-50369 Wroclaw, Poland published TMPE Derived from Saffron Natural Monoterpene as Cytotoxic and Multidrug Resistance Reversing Agent in Colon Cancer Cells in 2020.0, Cited 52.0. Safety of 1,1,1-Triethoxyethane. The Name is 1,1,1-Triethoxyethane. Through research, I have a further understanding and discovery of 78-39-7.

Terpenes constitute one of the largest groups of natural products. They exhibit a wide range of biological activities including antioxidant, anticancer, and drug resistance modulating properties. Saffron extract and its terpene constituents have been demonstrated to be cytotoxic against various types of cancer cells, including breast, liver, lung, pancreatic, and colorectal cancer. In the present work, we have studied anticancer properties of TMPE, a newly synthesized monoterpene derivative of beta-cyclocitral-the main volatile produced by the stigmas of unripe crocuses. TMPE presented selective cytotoxic activity to doxorubicin-resistant colon cancer cells and was identified to be an effective MDR modulator in doxorubicin-resistant cancer cells. Synergy between this derivative and doxorubicin was observed. Most probably, TMPE inhibited transport activity of ABCB1 protein without affecting its expression level. Analysis of TMPE physicochemical parameters suggested it was not likely to be transported by ABCB1. Molecular modeling showed TMPE being more reactive molecule than the parental compound-beta-cyclocitral. Analysis of electrostatic potential maps of both compounds prompted us to hypothesize that reduced reactivity as well as susceptibility to electrophilic attack were related to the lower general toxicity of beta-cyclocitral. All of the above pointed to TMPE as an interesting candidate molecule for MDR reversal in cancer cells.

Safety of 1,1,1-Triethoxyethane. About 1,1,1-Triethoxyethane, If you have any questions, you can contact Sroda-Pomianek, K; Palko-Labuz, A; Pola, A; Ferens-Sieczkowska, M; Wesolowska, O; Koziol, A or concate me.

Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com