Tag: M.W=100-150

Liu, Q; Tang, YR; Yang, X; Wei, M; Zhang, MX in [Liu, Qin; Tang, Yuran; Yang, Xue; Wei, Min; Zhang, Mingxiao] Southwest Univ, Coll Chem & Chem Engn, Chongqing 400715, Peoples R China published An Ultra-Low Detection Limit Glucose Sensor Based on Reduced Graphene Oxide-Concave Tetrahedral Pd NCs@CuO Composite in 2019.0, Cited 49.0. Recommanded Product: Benzyl Alcohol. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6.

Reduced graphene oxide-nanocrystals has attracted considerable attention since it has great potential due to its great chemical activity, high mechanical stability and excellent electrical properties. But the synthesis of reduced graphene oxide-nanocrystals still faces challenges, for example introduce of RGO would contribute to change the morphology of nanocrystals. To address the challenge, we designed a simple method to prepare the common composite material and it was successfully adopted to fabricate glucose sensor with higher catalytic activity. Under the optimal conditions, the experimental results indicated that RGO-Pd NCs@CuO/GC electrode showed excellent electrocatalysis for glucose oxidation with a lower detection limit of 10 nM. This sensor was of excellent stability and sensitivity. This study not only provides a new sensor for selective and reliable detection of glucose but also offers a common and facile strategy for syntheses of nanocrystals supported on reduced graphene oxide. (c) 2019 The Electrochemical Society.

About Benzyl Alcohol, If you have any questions, you can contact Liu, Q; Tang, YR; Yang, X; Wei, M; Zhang, MX or concate me.. Recommanded Product: Benzyl Alcohol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Environmental Sciences & Ecology very interesting. Saw the article Development of a novel scheme for rapid screening for environmental micropollutants in emergency situations (REPE) and its application for comprehensive analysis of tsunami sediments deposited by the great east Japan earthquake published in 2019.0. COA of Formula: C7H8O, Reprint Addresses Ueno, D (corresponding author), Saga Univ, Grad Sch Agr, Honjo 1, Saga 8400027, Japan.. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol

The tsunami triggered by the Great East Japan Earthquake of March 2011, the strongest quake ever recorded in Japan, deposited tsunami sediments along the coastline of the affected area. Because the sediments contained a wide variety of hazardous chemicals, including organic micropollutants, a method for rapidly evaluating the environmental and human health risks of such chemicals is necessary. For this purpose, we propose a novel three-step scheme designated rapid screening for environmental micropollutants in emergency situations (REPE). In the first step, samples are subjected to target screening analysis using an automated identification and quantification system (TSA-AIQS) involving gas chromatography mass spectrometry (GC-MS). In the second step, the chemicals detected by TSA-AIQS analysis are quantified precisely by conventional target analysis. The third step is risk assessment of the target chemicals. TSA-AIQS analysis of the tsunami sediments detected 63 substances, including polycyclic aromatic hydrocarbons (both native and alkylated PAHs) at high concentrations. These PAHs were precisely quantified by target analysis, and the concentrations were used to assess the health risks posed by oral intake, which were found to be negligible. Our results suggest that the REPE scheme will be useful for rapid, comprehensive screening and risk assessment in emergency situations. (C) 2019 Elsevier Ltd. All rights reserved.

About Benzyl Alcohol, If you have any questions, you can contact Matsuo, Y; Miyawaki, T; Kadokami, K; Nakai, K; Tatsuta, N; Nakata, H; Matsumura, T; Nagasaka, H; Nakamura, M; Sato, K; Tobo, K; Kakimoto, R; Someya, T; Ueno, D or concate me.. COA of Formula: C7H8O

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Pandrala, M; Resendez, A; Malhotra, SV in [Pandrala, Mallesh; Resendez, Angel; Malhotra, Sanjay V.] Stanford Univ, Sch Med, Dept Radiat Oncol, Palo Alto, CA 94304 USA published Polypyridyl iridium(III) based catalysts for highly chemoselective hydrogenation of aldehydes in 2019.0, Cited 53.0. SDS of cas: 100-83-4. The Name is 3-Hydroxybenzaldehyde. Through research, I have a further understanding and discovery of 100-83-4.

Iridium-catalyzed transfer hydrogenation (TH) of carbonyl compounds using HCOOR (R = H, Na, NH4) as a hydrogen source is a pivotal process as it provides the clean process and is easy to execute. However, the existing highly efficient iridium catalysts work at a narrow pH; thus, does not apply to a wide variety of substrates. Therefore, the development of a new catalyst which works at a broad pH range is essential as it can gain a broader scope of utilization. Here we report highly efficient polypyridyl iridium(III) catalysts, [Ir(tPY)(L)Cl](PF6)(2) (where tpy = 2,2′:6′,2-Terpyridine, L = phen (1,10-Phenanthroline), Me(2)phen (4,7-Di methyl-1,10-phenanthroline), Me(4)phen (3,4,7,8-Tetramethyl-1,10-phenanthroline), Me(2)bpy (4,4′-Dimet hyl-2-2′-dipyridyl)) for the chemoselective reduction of aldehydes to alcohols in aqueous ethanol and sodium formate as the hydride source. The reaction can be carried out efficiently in broad pH ranges, from pH 6 to 11. These catalysts are air stable, easy to prepare using commercially available starting materials, and are highly applicable for a wide range of substrates, such as electron-rich or deficient (hetero)arenes, halogens, phenols, alkoxy, ketones, esters, carboxylic acids, cyano, and nitro groups. Particularly, acid and hydroxy groups containing aldehydes were reduced successfully in basic and acidic reaction conditions, demonstrating the efficiency of the catalyst in a broad pH range with high conversion rates under microwave irradiation. (C) 2019 Elsevier Inc. All rights reserved.

SDS of cas: 100-83-4. About 3-Hydroxybenzaldehyde, If you have any questions, you can contact Pandrala, M; Resendez, A; Malhotra, SV or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

In 2021.0 J ORG CHEM published article about QUINONE METHIDES; PHOTOCHEMICAL GENERATION; ALKYLATING-AGENTS; BENZYL CATIONS; OLIGONUCLEOTIDE; NUCLEOTIDE; OXYGEN; SUBSTITUENTS; REACTIVITY; STABILITY in [Fan, Heli; Peng, Xiaohua] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA; [Fan, Heli; Peng, Xiaohua] Univ Wisconsin, Milwaukee Inst Drug Discovery, Milwaukee, WI 53211 USA in 2021.0, Cited 54.0. The Name is Mequinol. Through research, I have a further understanding and discovery of 150-76-5. COA of Formula: C7H8O2

We have synthesized and characterized two small libraries of 2-OMe or 2-NO2-benzene analogues 2a-i and 3a-i containing a wide variety of leaving groups. Irradiation of these compounds at 350 nm generated benzyl radicals that were spontaneously oxidized to benzyl cations directly producing DNA interstrand cross-links (ICLs). Compounds with a 2-methoxy substituent showed a faster cross-linking reaction rate and higher ICL efficiency than the corresponding 2-nitro analogues. Apart from the aromatic substituent, the benzylic leaving groups greatly affected DNA cross-linking efficiency. Higher ICL yields were observed for compounds with OCH3 (3b), OCH2Ph (3d), or Ph3P+ (3i) as leaving groups than those containing OAc (3a), NMe2 (3e), morpholine (3f), OCH2CH=CH2 (3c), SPh (3g), or SePh (3h). The heat stability study of the isolated ICL products indicated that dGs were the preferred alkylation sites in DNA for the benzyl cations produced from 2a-i, 3c, and 3e-i while 3a (L = OAc), 3b (L = OMe), and 3d (L = OCH2Ph) showed a similar photoreactivity toward dGs and dAs. Although the photogenerated benzyl cations alkylated dG, dC, and dA, ICL assay with variation of DNA sequences showed that the ICL reaction occurred with opposing dG/dC but not with staggered dA/dA.

About Mequinol, If you have any questions, you can contact Fan, HL; Peng, XH or concate me.. COA of Formula: C7H8O2

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Sustainable Aldehyde Oxidations in Continuous Flow Using in Situ-Generated Performic Acid WOS:000644738000005 published article about FREE AEROBIC OXIDATION; CARBOXYLIC-ACIDS; 2,5-FURANDICARBOXYLIC ACID; SELECTIVE OXIDATION; HYDROGEN-PEROXIDE; PRIMARY ALCOHOLS; PERACETIC-ACID; CHEMISTRY; CATALYSIS; KINETICS in [Prieschl, Michael; Otvos, Sandor B.; Kappe, C. Oliver] Res Ctr Pharmaceut Engn GmbH RCPE, Ctr Continuous Flow Synth & Proc CCFLOW, A-8010 Graz, Austria; [Prieschl, Michael; Otvos, Sandor B.; Kappe, C. Oliver] Karl Franzens Univ Graz, Inst Chem, NAWI Graz, A-8010 Graz, Austria in 2021, Cited 58. Recommanded Product: 123-11-5. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5

The oxidation of aldehydes is one of the most prevalent methods for the synthesis of a diverse range of carboxylic acids. We herein present a performic acid generator and its application for aldehyde oxidations under continuous flow conditions. Low molecular weight performic acid, an environmentally benign and inexpensive oxidant, was readily formed in situ from formic acid and hydrogen peroxide. The safety hazards typically encountered when manipulating this potentially explosive reagent were eliminated, while at the same time a clean and efficient access to valuable carboxylic acids was ensured. By taking advantage of concentrated or even neat aldehyde streams, the amount of organic solvents utilized, and thus waste formation, was successfully minimized as demonstrated by E-factors in the range of 5-18. The process proved applicable for a wide range of aromatic as well as aliphatic aldehydes, while its synthetic utility and stability were corroborated by scale-out experiments leading to multigram-scale syntheses.

Recommanded Product: 123-11-5. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Prieschl, M; Otvos, SB; Kappe, CO or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article One-pot three-component reaction of p-quinone monoacetals, l-proline and naphthols to afford N-aryl-2-arylpyrrolidines WOS:000611795900014 published article about ALPHA-AMINO-ACIDS; C-H FUNCTIONALIZATION; DIELS-ALDER REACTIONS; METAL-FREE; DECARBOXYLATIVE ANNULATION; CONJUGATE ADDITION; COUPLING REACTION; MICHAEL ADDITION; VINYL ETHERS; DERIVATIVES in [Wang, Xin; Li, Gang; Li, Xiaojie; Zhu, Dunru; Shen, Ruwei] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Coll Chem & Chem Engn, Nanjing 210009, Peoples R China in 2021, Cited 56. Safety of Mequinol. The Name is Mequinol. Through research, I have a further understanding and discovery of 150-76-5

The one-pot three-component reaction of p-quinone monoacetals (or p-quinol ethers), l-proline and naphthols is developed for the synthesis of N-aryl-2-arylpyrrolidines under mild conditions with high chemo- and regioselectivity. The reaction may involve multiple processes including condensation, decarboxylation and demethoxylation for the the generation of N-arylated 3,4-dihydro-2H-pyrrolium followed by controllable capture by naphthols. In the absence of a naphthol, p-quinone monoacetal coupled with l-proline to form a complex dipyrroloquinoline product.

About Mequinol, If you have any questions, you can contact Wang, X; Li, G; Li, XJ; Zhu, DR; Shen, RW or concate me.. Safety of Mequinol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Transition metal-free, visible-light-mediated construction of alpha,beta-diamino esters via decarboxylative radical addition at room temperature WOS:000472787400010 published article about MANNICH-TYPE ADDITIONS; GLYOXYLIC OXIME ETHER; ASYMMETRIC-SYNTHESIS; CARBOXYLIC-ACIDS; PHOTOCHEMICAL DECARBOXYLATION; MERGING PHOTOREDOX; DERIVATIVES; AMINO; IMINES in [Wu, Guibing; Wang, Jingwen; Liu, Chengyu; Sun, Maolin; Zhang, Lei; Ma, Yueyue; Ye, Jinxing] East China Univ Sci & Technol, Engn Res Ctr Pharmaceut Proc Chem, Shanghai Key Lab New Drug Design, Minist Educ,Sch Pharm, 130 Meilong Rd, Shanghai 200237, Peoples R China; [Cheng, Ruihua] East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China in 2019, Cited 38. SDS of cas: 100-51-6. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6

Transition-metal-free visible-light photoredox catalyzed decarboxylative radical addition has been developed for the construction of alpha,beta-diamino esters from amino acids with glyoxylic oxime ethers under mild conditions. Cyclic and chain amino acids, dipeptides, and simple aliphatic acids are amenable to this addition as the alkyl radical source. A variety of alpha,beta-diamino esters with broad functional groups were synthesized in satisfactory yields at room temperature. The employment of acridinium as the photocatalyst and its potential scalability also demonstrate the synthetic value in practice.

SDS of cas: 100-51-6. About Benzyl Alcohol, If you have any questions, you can contact Wu, GB; Wang, JW; Liu, CY; Sun, ML; Zhang, L; Ma, YY; Cheng, RH; Ye, JX or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Discovery of hydrazide-containing oseltamivir analogues as potent inhibitors of influenza A neuraminidase WOS:000661282500043 published article about VIRUS; ZANAMIVIR; EPIDEMIOLOGY; DERIVATIVES; RESISTANCE in [Zhao, Hongqian; Jiang, Siyuan; Ye, Zhifan; Zhu, Hongxi; Meng, Peipei; Wang, Kuanglei; Tian, Yongshou] Shenyang Pharmaceut Univ, Sch Pharmaceut Engn, Key Lab Struct Based Drug Design & Discovery, Minist Educ, 103 Wenhua Rd, Shenyang 110016, Peoples R China; [Hu, Baichun] Shenyang Pharmaceut Univ, Sch Pharm, 103 Wenhua Rd, Shenyang 110016, Peoples R China; [Zhang, Huicong] Shenyang Pharmaceut Univ, Wuya Coll Innovat, 103 Wenhua Rd, Shenyang 110016, Peoples R China; [Hu, Yanmei; Wang, Jun] Univ Arizona, Coll Pharm, Dept Pharmacol & Toxicol, Tucson, AZ 85721 USA in 2021, Cited 41. Product Details of 123-11-5. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5

Neuraminidase (NA) inhibitors play a prime role in treating influenza. However, a variety of viruses containing mutant NAs have developed severe drug resistance towards NA inhibitors, so it is of crucial significance to solve this problem. Encouraged by urea-containing compound 12 disclosed by our lab, we designed a series of oseltamivir derivatives bearing hydrazide fragment for targeting the 150 cavity. Among the synthesized compounds, compound 17a showed 8.77-fold, 4.12-fold, 203-fold and 6.23-fold more potent activity than oseltamivir carboxylate against NAs from H5N1, H1N1, H5N1-H274Y, H1N1-H274Y, respectively. Meanwhile, the best compound 17a exhibited satisfactory metabolic stability in vitro. This study offers an important reference for the structural optimization of oseltamivir aiming at potent inhibition against H274Y mutant of NAs. (C) 2021 Elsevier Masson SAS. All rights reserved.

Product Details of 123-11-5. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Zhao, HQ; Jiang, SY; Ye, ZF; Zhu, HX; Hu, BC; Meng, PP; Hu, YM; Zhang, HC; Wang, KL; Wang, J; Tian, YS or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recommanded Product: 4′-Hydroxyacetophenone. In 2019.0 ACS OMEGA published article about HYBRID COMPOUNDS; CYTOTOXIC ACTIVITY; TUBULIN POLYMERIZATION; BIOLOGICAL EVALUATION; ANTITUMOR-ACTIVITY; IMIDAZOLE; ISOLIQUIRITIGENIN; DERIVATIVES; INHIBITION; ANALOGS in [Yang, Jun-Li; Ma, Yong-Hui; Zhang, Yi-Peng; Tian, Hong-Chang; Huang, Yuan-Cheng; Chen, Wen] Yunnan Univ, Sch Chem Sci & Technol, Key Lab Med Chem Nat Resources, Minist Educ & Yunnan Prov, Kunming 650091, Yunnan, Peoples R China; [Yang, Jun-Li; Li, Yan-Hua; Yang, Li-Juan] Yunnan Minzu Univ, Engn Res Ctr Green Preparat Technol Biobased Mat, Sch Chem & Environm, Kunming 650500, Yunnan, Peoples R China; [Li, Yan] Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650204, Yunnan, Peoples R China in 2019.0, Cited 44.0. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4.

A series of novel trimethoxyphenyl-derived chalcone-benzimidazolium salts were synthesized. The biological properties of the compounds were screened in vitro against five different human tumor cell lines. The results suggest that the 5,6-dimethyl-benzimidazole or 2-methyl-benzimidazole ring as well as the 2-naphthylmethyl, 4-methylbenzyl, or 2-naphthylacyl substituent at position-3 of the benzimidazole ring was important to the cytotoxic activity. Notably, (E)-5,6-dimethy1-3-(naphth alen-2-ylmethyl)-1-(3-(4-(3-(3,4,5-trime thoxyphenyl) a cryloyl) phenoxy)propyl)-1H-benzo [d] imidazol-3-ium bromide (7f) was more selective to HL-60, MCF-7, and SW-480 cell lines with IC50 values 8.0-, 11.1-, and 5.8-fold lower than DDP. Studies of the antitumor mechanism of action showed that compound 7f could induce cell-cycle G1 phase arrest and apoptosis in SMMC-7721 cells.

Recommanded Product: 4′-Hydroxyacetophenone. About 4′-Hydroxyacetophenone, If you have any questions, you can contact Yang, JL; Ma, YH; Li, YH; Zhang, YP; Tian, HC; Huang, YC; Li, Y; Chen, W; Yang, LJ or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Formula: C8H8O2. Liu, L; She, MY; Zhang, J; Wang, ZH; Liu, H; Tang, M; Liu, P; Zhang, SY; Li, JL in [Liu, Lang; She, Mengyao; Zhang, Jun; Wang, Zhaohui; Liu, Hua; Tang, Mi; Liu, Ping; Zhang, Shengyong; Li, Jianli] Northwest Univ, Minist Educ, Key Lab Synthet & Nat Funct Mol Chem, Coll Chem & Mat Sci, Xian 710127, Shaanxi, Peoples R China; [She, Mengyao] Northwest Univ, Key Lab Resource Biol & Modern Biotechnol Western, Minist Educ, Coll Life Sci,Fac Life & Hlth Sci, Xian 710069, Shaanxi, Peoples R China published A practical strategy for construction and regulation of multi-functional triazepinium salts via highly efficient I-2-catalyzed cyclization in 2020, Cited 60. The Name is 4′-Hydroxyacetophenone. Through research, I have a further understanding and discovery of 99-93-4.

Synthesis of new functional organic molecules is a critical path that may greatly accelerate the evolution of organic optoelectronic materials. We have achieved a facile synthesis strategy to produce unique saddle-shaped multi-functional triazepinium salts that exhibit excellent solid-state fluorescence. Their fluorescence performance could be easily regulated by adjusting the dihedral angle between the main skeleton and the substituted moiety, giving a large Stokes shift, non-aggregation quenching, long lifetime, and multilevel-redox characteristics.

Formula: C8H8O2. About 4′-Hydroxyacetophenone, If you have any questions, you can contact Liu, L; She, MY; Zhang, J; Wang, ZH; Liu, H; Tang, M; Liu, P; Zhang, SY; Li, JL or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles