Tag: M.W=200-250

An article Bis(tridentate) Iron(II) Complexes with a Cyclometalating Unit: Photophysical Property Enhancement with Combinatorial Strong Ligand Field Effect WOS:000562124400002 published article about TRANSFER EXCITED-STATE; BOND ACTIVATION; SPIN-CROSSOVER; SOLAR-CELL; C-H; CHARGE; DYNAMICS; PHOTOCHEMISTRY; PHOSPHORESCENT; RUTHENIUM(II) in [Tang, Zhou; Chang, Xiao-Yong; Wang, Jian; Liu, Yungen; Che, Chi-Ming] Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China; [Tang, Zhou; Wan, Qingyun; Law, Kwok-Chung; Che, Chi-Ming] Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China; [Tang, Zhou; Wan, Qingyun; Law, Kwok-Chung; Che, Chi-Ming] Univ Hong Kong, State Key Lab Synthet Chem, Hong Kong, Peoples R China; [Ma, Chensheng] Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518055, Guangdong, Peoples R China in 2020.0, Cited 88.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. HPLC of Formula: C15H12O

A series of bis(tridentate) cyclometalated oligopyridine complexes [Fe-II(C<^> N<^>N)(L)](+) have been synthesized via the reactions of [Fe-II(C<^> N<^>N-py)Br(PMe3)(2)] (1, HC<^>N-py<^>N-py = 6-(phenyI)-2,2′-bipyridine) and [Fe-II(C<^>N-ppy<^>N-isoquin)Br(PMe3)(2)] (2, HC<^>N-ppy<^>N-isoquin = 3-(4,6-diphenylpyridin-2-yl)isoquinoline with tridentate ligands L, affording [Fe-II(C<^>N-ppy<^>N-py)(4′-R-tpy)](+) (3a-e, R = H, Cl, p-ClC6H4, p-MeOC6H4, p-tol, respectively; tpy 2,2′:6′,2 ”-terpyridine), [Fe-II(C<^>N-ppy<^>N-isoquin)(tpy)](+) (4), [Fe-II(C<^>N-ppy<^>N-py)(6-(Ph2PCH2)-bpy)](+) (5, bpy = 2,2′-bipyridine), and [Fe-II(C<^>N-py<^>N-py)(6-NHC-bpy)](+) (6, NHC = N-heterocyclic carbene). Complexes 3-6 exhibit bathochromically shifted absorption bands, markedly cathodically shifted E-1/2 (Fe-III/Fe-II) values, and narrowed electrochemical band gaps in comparison to those of [Fe-II(tpy)(2)](2+), as revealed by UV-vis absorption spectroscopy and cyclic voltammetry. DFT and TDDFT calculation studies revealed strong mixing of MLCT with LLCT transitions as origins to the major absorption bands. Complex 6 incorporating a cyclometalating unit and an NHC donor exhibits panchromic absorption, and 5 shows markedly enhanced molar absorptivity in the visible region. A femtosecond transient absorption spectroscopic study of 6, coupled with DFT and TDDFT calculations and spectroelectrochemical measurements, gave evidence for the possible involvement of a (MLCT)-M-3 state with a lifetime of 21.4 ps.

About Chalcone, If you have any questions, you can contact Tang, Z; Chang, XY; Wan, QY; Wang, J; Ma, CS; Law, KC; Liu, YG; Che, CM or concate me.. HPLC of Formula: C15H12O

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

Formula: C15H12O. Recently I am researching about 1,10-PHENANTHROLINE; COMPLEXES; LIGANDS, Saw an article supported by the Russian Science FoundationRussian Science Foundation (RSF) [18-73-00133]. Published in SPRINGER in NEW YORK ,Authors: Sannikova, VA; Filippov, IR; Karmatskikh, OY; Panfilov, MA; Andreev, RV; Vorob’ev, AY. The CAS is 94-41-7. Through research, I have a further understanding and discovery of Chalcone

The reaction ofN-amino-1,10-phenanthrolinium mesitylenesulfonate with acceptor-substituted alkenes in the K2CO3-DMSO system gave 3- and 2,3-substituted pyrazolo[1,5-a][1,10]phenanthrolines. A wide range of alkenes enter into this reaction; however, in the case of nitro derivatives, complex mixtures of products were formed.

Formula: C15H12O. About Chalcone, If you have any questions, you can contact Sannikova, VA; Filippov, IR; Karmatskikh, OY; Panfilov, MA; Andreev, RV; Vorob’ev, AY or concate me.

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Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com

In 2019.0 ORG LETT published article about ANTIBACTERIAL ACTIVITY; ORGANOCATALYTIC ACTIVATION; BLIGHT in [Pan, Dingwu; Zan, Ningning; Lv, Ya; Song, Bao-An; Chi, Yonggui Robin; Jin, Zhichao] Guizhou Univ, Lab Breeding Base Green Pesticide & Agr Bioengn, Key Lab Green Pesticide & Agr Bioengn, Guiyang 550025, Guizhou, Peoples R China; [Mou, Chengli] Guizhou Univ Tradit Chinese Med, Guiyang 550025, Guizhou, Peoples R China; [Chi, Yonggui Robin] Nanyang Technol Univ, Sch Phys & Math Sci, Div Chem & Biol Chem, Singapore 637371, Singapore in 2019.0, Cited 42.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. Application In Synthesis of Chalcone

A chemoselective cascade cycloaddition reaction is developed for green and efficient access to cyclopenta-[c]pyridine derivatives. Simple and inexpensive NaOH is used as the sole catalyst for this process. The delta-carbon of cyclopropyl ester is activated as a nucleophiic carbon to initiate highly chemoselective cascade reactions. Cyclopenta-[c]pyridines bearing various substituents are afforded in excellent yields. Preliminary studies on the bioactivities of the afforded products show promising antibacterial activities for potential applications in plant protections.

Application In Synthesis of Chalcone. About Chalcone, If you have any questions, you can contact Pan, DW; Mou, CL; Zan, NN; Lv, Y; Song, BA; Chi, YR; Jin, ZC or concate me.

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

Authors Hejazifar, M; Palvolgyi, AM; Bitai, J; Lanaridi, O; Bica-Schroder, K in AMER CHEMICAL SOC published article about AROMATIC KETONES; TRANSFER REDUCTION; CHIRAL LIGANDS; WATER; CATALYST; COMPLEXES; RUTHENIUM; IMINES; RESOLUTION in [Hejazifar, Mahtab; Palvoelgyi, Adam Mark; Bitai, Jacqueline; Lanaridi, Olga; Bica-Schroeder, Katharina] TU Wien, Inst Appl Synthet Chem, Getreidemarkt 9-163, A-1060 Vienna, Austria in 2019.0, Cited 57.0. Formula: C15H12O. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

A thermomorphic ionic-liquid-based microemulsion system was successfully applied for the Ru-catalyzed asymmetric transfer hydrogenation of ketones. On the basis of the temperature-dependent multiphase behavior of the targeted microemulsion, simple product separation as well as catalyst recycling could be realized. The use of water-soluble ligands improved the immobilization of the catalyst in the microemulsion phase and significantly decreased the catalyst leaching into the organic layer upon extraction of the product. Eventually, the optimized microemulsion system could be applied to a wide range of aromatic ketones that were reduced with good isolated yields (up to 98%) and enantioselectivities (up to 97%), while aliphatic ketones were less successful.

Formula: C15H12O. About Chalcone, If you have any questions, you can contact Hejazifar, M; Palvolgyi, AM; Bitai, J; Lanaridi, O; Bica-Schroder, K or concate me.

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

An article BA-12 Inhibits Angiogenesis via Glutathione Metabolism Activation WOS:000484411100219 published article about DRUG TARGET IDENTIFICATION; VASCULAR DEVELOPMENT; WEB SERVER; DIFFERENTIATION; BEVACIZUMAB; MECHANISMS; GROWTH; VEGF in [Cui, Herong; Guo, Wenbo; Zhang, Beibei; Li, Guoping; Li, Tong; Yuan, Yanyan; Zhang, Na; Yang, Yuwei; Chu, Fuhao; Xu, Bing; Wang, Penglong; Lei, Haimin] Beijing Univ Chinese Med, Sch Chinese Pharm, Beijing 102488, Peoples R China; [Feng, Wuwen] Chengdu Univ Tradit Chinese Med, Sch Pharm, Chengdu 610000, Sichuan, Peoples R China; [Wang, Shenglan] Beijing Univ Chinese Med, Sch Acupuncture & Massage, Beijing 102488, Peoples R China in 2019.0, Cited 45.0. Formula: C15H12O. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

There is a need for an efficient and low-cost leading compound discovery mode. However, drug development remains slow, expensive, and risky. Here, this manuscript proposes a leading compound discovery strategy based on a combination of traditional Chinese medicine (TCM) formulae and pharmacochemistry, using a ligustrazine-betulinic acid derivative (BA-12) in the treatment of angiogenesis as an example. Blocking angiogenesis to inhibit the growth and metastasis of solid tumors is currently one recognized therapy for cancer in the clinic. Firstly, based on a traditional Prunella vulgaris plaster, BA-12 was synthesized according to our previous study, as it exhibited better antitumor activities than other derivatives on human bladder carcinoma cells (T24); it was then uploaded for target prediction. Secondly, the efficacy and biotoxicity of BA-12 on angiogenesis were evaluated using human umbilical vein endothelial cells (HUVECs), a quail chick chorioallantoic membrane, and Caenorhabditis elegans. According to the prediction results, the main mechanisms of BA-12 were metabolic pathways. Thus, multiple metabolomics approaches were applied to reveal the mechanisms of BA-12. Finally, the predictive mechanisms of BA-12 on glutathione metabolism and glycerophospholipid metabolism activation were validated using targeted metabolomics and pharmacological assays. This strategy may provide a reference for highly efficient drug discovery, with the aim of sharing TCM wisdom for unmet clinical needs.

About Chalcone, If you have any questions, you can contact Cui, HR; Guo, WB; Zhang, BB; Li, GP; Li, T; Yuan, YY; Zhang, N; Yang, YW; Feng, WW; Chu, FH; Wang, SL; Xu, B; Wang, PL; Lei, HM or concate me.. Formula: C15H12O

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

COA of Formula: C15H12O. Sk, MR; Maji, MS in [Sk, Md Raja; Maji, Modhu Sudan] Indian Inst Technol Kharagpur, Dept Chem, Kharagpur 721302, WB, India published Cobalt(iii)-catalyzed ketone-directed C-H vinylation using vinyl acetate in 2020, Cited 84. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7.

Weakly coordinating, ketone-directed C-H vinylation using vinyl acetate is reported here for a wide range of aromatic ketones such as acetophenones, diaryl ketones, chromones and biologically relevant chalcones under cost-effective and air-stable cobalt(iii)-catalysis. Regioselective, mono-vinylation occurs for challenging vinyl substitution-free styrenes in moderate to good yields, and this moiety has been used to synthesize functionalized indanone, alpha-naphthol and an advanced intermediate for bruguierol A synthesis. An acrylate-surrogate provided the corresponding alkenylated product under these vinylation conditions. Detailed mechanistic studies are carried out to support the proposed catalytic cycle.

About Chalcone, If you have any questions, you can contact Sk, MR; Maji, MS or concate me.. COA of Formula: C15H12O

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

An article Asymmetric Synthesis of Axially Chiral Phosphamides via Atroposelective N-Allylic Alkylation WOS:000513099200066 published article about NON-BIARYL ATROPISOMERS; CATALYZED ENANTIOSELECTIVE CONSTRUCTION; BAYLIS-HILLMAN ACETATES; CYCLIC DIARYLIODONIUM; GAMMA-BUTENOLIDES; LIGANDS; ALLYLATION; ANILIDES; INDOLES; SPIROLACTONIZATION in [Yang, Guo-Hui; Zheng, Hanliang; Li, Xin; Cheng, Jin-Pei] Nankai Univ, Coll Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China in 2020.0, Cited 110.0. Application In Synthesis of Chalcone. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

Axially chiral anilide compounds are an emerging but scarcely investigated class of stereogenic molecules with potential applications as biologically active scaffolds. Because of the lower rotation barriers, the synthesis of these compounds is a challenging task. Furthermore, the status of the limited structure type of chiral anilide constrains the latent capacity of the C-N axis as a chiral source in the application of asymmetric synthesis. Herein, we disclose an efficient protocol for the construction of the rationally designed axially chiral phosphamides via atroposelective N-allylic alkylation reaction of MBH carbonates and phosphamides. The simple hydroquinidine catalyst proves to be most efficient in this artroposelective strategy, delivering the desired axially chiral phosphamides in good yields and high enantioselectivities. In addition, a phosphamide compound, which contains both P-stereogenic center and C-N axial chirality, can be obtained by this method through a kinetic resolution process. Because of the large steric diaryl phosphoryl group, the synthesized axially chiral anilide has a large rotational barrier. As a demonstration, current studied axially chiral ortho-iodine substituted phosphamides could act as efficient chiral hypervalent iodine(III) catalysts for the asymmetric oxidative dearomatization of phenols. Moreover, a speculative model, which can explain the enantiocontrol, was proposed based on the experimental observation and theoretical calculation.

Application In Synthesis of Chalcone. About Chalcone, If you have any questions, you can contact Yang, GH; Zheng, HL; Li, X; Cheng, JP or concate me.

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

Singh, LR; Chen, YL; Xie, YY; Xia, W; Gong, XW; Hider, RC; Zhou, T in [Singh, L. Ravithej; Xia, Wei; Gong, Xing-Wen; Zhou, Tao] Zhejiang Gongshang Univ, Sch Food Sci & Biotechnol, 18 Xuezheng St, Hangzhou 310018, Zhejiang, Peoples R China; [Chen, Yu-Lin; Hider, Robert C.] Kings Coll London, Div Pharmaceut Sci, London, England; [Xie, Yuan-Yuan] Zhejiang Univ Technol, Coll Pharmaceut Sci, Hangzhou, Peoples R China published Functionality study of chalcone-hydroxypyridinone hybrids as tyrosinase inhibitors and influence on anti-tyrosinase activity in 2020.0, Cited 31.0. Formula: C15H12O. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7.

In an attempt to synthesise new tyrosinase inhibitors, we designed and synthesised a series of chalcone-hydroxypyridinone hybrids as potential tyrosinase inhibitors adopting strategic modifications of kojic acid. All the newly synthesised compounds were characterised by NMR and mass spectrometry. Initial screening of the target compounds demonstrated that compounds1a,1d, and1nhad relatively strong inhibitory activities against tyrosinase monophenolase, with IC(50)values of 3.07 +/- 0.85, 2.25 +/- 0.8 and 2.75 +/- 1.19 mu M, respectively. The inhibitory activity against monophenolase was 6- to 8-fold higher than that of kojic acid. Compounds1a,1d, and1nalso showed inhibition of diphenolase, with IC(50)values of 17.05 +/- 0.07, 11.70 +/- 0.03 and 19.3 +/- 0.28 mu M, respectively. The inhibition kinetics of diphenolase indicates that compounds1aand1dinduce reversible inhibition on tyrosinase. Finally, we found that copper coordination should be one of the important inhibitory mechanism of these compounds in tyrosinase.

Formula: C15H12O. About Chalcone, If you have any questions, you can contact Singh, LR; Chen, YL; Xie, YY; Xia, W; Gong, XW; Hider, RC; Zhou, T or concate me.

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

In 2020.0 J CATAL published article about CONJUGATED MICROPOROUS POLYMER; METAL NANOPARTICLES; GAS-SORPTION; PALLADIUM NANOPARTICLES; FRAMEWORK; STORAGE; DESIGN; NANOCATALYSTS; PD-2(DBA)(3); FABRICATION in [Yadav, Chetna; Maka, Vijay Kumar; Payra, Soumen; Moorthy, Jarugu Narasimha] Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India; [Moorthy, Jarugu Narasimha] Indian Inst Sci Educ & Res, Sch Chem, Thiruvananthapuram 695551, Kerala, India in 2020.0, Cited 67.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. Computed Properties of C15H12O

In spite of the fact that a variety of reactions have been exploited for creation of innumerable porous organic polymers (POPs), aldol condensation reactions between aldehydes and ketones leading to enones remain unutilized quite inexplicably. We surmised that the enone functionality can be exploited for stabilization of Pd akin to the manner of Pd(0) in Pd-2(dba)(3) by developing POPs based on aldol condensation reactions of polycarbonyl compounds with dialdehydes, and that such materials can be employed for catalytic transformations. By subjecting rationally designed tri-/tetraacetyl-functionalized aryl amines to aldol condensations with terephthalaldehyde, three different POPs, i.e., TPAPOPs 1-3, that feature enone functionalities have been synthesized and shown to exhibit palpable gas sorption properties. Remarkably, inverse uptake for sorption of H-2 over N-2 was observed for all POPs. As surmised, the representative POP, i.e., TPAPOP-1, was found to stabilize in situ-generated Pd(0) nanoparticles to enable application of the resultant material, i.e., Pd@TPAPOP-1, as a recyclable heterogeneous catalyst for a number of organic transformations. It is shown that coupling reactions such as Suzuki and Heck, and reductions such as nitro-to-amine and hydrogenation of olefins can be accomplished in a facile manner by employing Pd@TPAPOP-1 as a heterogeneous recyclable catalyst; the aforementioned transformations have been demonstrated on a broad set of substrates for each type. (C) 2020 Elsevier Inc. All rights reserved.

About Chalcone, If you have any questions, you can contact Yadav, C; Maka, VK; Payra, S; Moorthy, JN or concate me.. Computed Properties of C15H12O

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

Authors Minami, Y; Konishi, A; Yasuda, M in AMER CHEMICAL SOC published article about CROSS-ALDOL REACTION; BAYLIS-HILLMAN REACTION; REGIOSELECTIVE SYNTHESIS; ALDEHYDES; REACTIVITY; SILYLENE; ALKYNES; IDENTIFICATION; COORDINATION; INHIBITORS in [Minami, Yohei; Konishi, Akihito; Yasuda, Makoto] Osaka Univ, Grad Sch Engn, Dept Appl Chem, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan; [Konishi, Akihito] Osaka Univ, Grad Sch Engn, Ctr Atom & Mol Technol, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan in 2019.0, Cited 52.0. COA of Formula: C15H12O. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7

The synthesis of alpha-alkenyl alpha,beta-unsaturated ketones using germanium(II) salts is reported. Oxagermacycles derived from alpha,beta-unsaturated ketones with germanium(II) salts and aldehydes can be transformed into a-alkenyl a 6-unsaturated ketones. Ammonium salts promoted the elimination of Ge(II) species to afford the two classes of alpha-alkenyl alpha,beta-unsaturated ketones in good yields. The alpha-alkenyl alpha,beta-unsaturated ketones are precursors for multisubstituted heterocycles.

About Chalcone, If you have any questions, you can contact Minami, Y; Konishi, A; Yasuda, M or concate me.. COA of Formula: C15H12O

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