Tag: M.W=250-300

Lee, Dong-Jun; Kim, Minyoung; Jung, Sungyup; Park, Young-Kwon; Jang, YuNa; Tsang, Yiu Fai; Kim, Hana; Park, Kyu-Hyun; Kwon, Eilhann E. published the artcile< Direct conversion of yellow mealworm larvae into biodiesel via a non-catalytic transesterification platform>, Synthetic Route of 112-63-0, the main research area is yellow mealworm larvae biodiesel non catalytic transesterification.

A massive quantity of organic waste is generated globally. Despite its detrimental impacts on all environmental media (soil, water, and air), a sustainable valorization platform for organic waste has not been fully developed. In an effort to reduce the tech. gap, this study placed great emphasis on a new valorization route employing the conversion of food/agricultural waste to biodiesel (BD). In this study, the yellow mealworm larvae (MW) were grown on piles of wheat bran to convert carbohydrates to fat through its fast metabolism The ultimate aim was to enhance the economic viability of BD by producing fat from food/agricultural waste. Fat from MW larvae were then converted to BD through the non-catalytic conversion (authors-invented) process. As a reference, conventional acid/base-catalyzed transesterification of fat from MW larvae was also made. The conventional conversion process revealed a BD yield of 48.55 wt%, which was attributed to the high content of moisture and impurities in the MW extract The non-catalytic conversion process of MW extract showed a BD yield of 87.75 wt% in 1 min at 370鎺矯, showing an extraordinarily high tolerance against water and impurities. The non-catalytic reaction also allowed the in-situ conversion of fat in MW to BD even at 320鎺矯 without fat extraction The enhanced reaction kinetics could be due to the catalytic effects of the alk. earth metals in MW.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Agricultural wastes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Canalle, Luiz A.; Vong, TuHa; Adams, P. HansH. M.; van Delft, Floris L.; Raats, Jos M. H.; Chirivi, Renato G. S.; van Hest, Jan C. M. published the artcile< Clickable Enzyme-Linked Immunosorbent Assay>, Application of C19H34O2, the main research area is clickable enzyme linked immunosorbent assay.

Click chem. is explored as a potential cost-effective and selective immobilization method for the production of an ELISA. Coatings were formulated containing either a terminal alkyne or a bicyclo[6.1.0]non-4-yne (BCN) chem. handle, and a diagnostic peptide was subsequently immobilized onto these coatings by the copper-catalyzed azide-alkyne 1,3-dipolar cycloaddition (CuAAC) or copper-free strain-promoted azide-alkyne 1,3-dipolar cycloaddition (SPAAC), resp. The terminal alkyne-containing coating showed high background levels in subsequent ELISA’s due to the copper catalyst used in the immobilization step. The BCN-containing coating, however, was successfully employed and presents a cost-effective alternative to existing (strept)avidin-biotin immobilization methods. This technol. was illustrated with an ELISA used for the diagnosis of rheumatoid arthritis (RA) but could be easily applied to a wide range of diagnostic tests.

Biomacromolecules published new progress about Affinity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Schroeder, Chad E.; Neuenswander, Sarah A.; Yao, Tuanli; Aube, Jeffrey; Golden, Jennifer E. published the artcile< One-pot, regiospecific assembly of (E)-benzamidines from � and �amino acids via an intramolecular aminoquinazolinone rearrangement>, Category: esters-buliding-blocks, the main research area is regiospecific preparation benzamidine; rearrangement quinazolinone preparation.

The efficient generation of novel, N-linked benzamidines resulting from a regiospecific rearrangement of quinazolinones is described. This methodol. study explored reaction parameters including the effect of changing solvent and temperature, as well as varying electronic substituents on the structural core. The transformation was extensively optimized in terms of reaction conditions and scope, resulting in a protocol that consistently affords diversely functionalized amidines in high yield. The process permits regional structural derivatization that was previously inaccessible, and the multistep process was also reduced to a telescoped, five-step sequence that efficiently affords pharmacol. unique (E)-benzamidoamidines from N-BOC protected � and �amino acids.

Organic & Biomolecular Chemistry published new progress about Amino acids Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chen, Shujing; Wang, Yuan; Liang, Chunxiao; Li, Jin; Li, Yuhong; Wu, Qi; Liu, Zhijian; Pang, Xiaoli; Chang, Yan-xu published the artcile< Buyang Huanwu Decoction ameliorates atherosclerosis by regulating TGF-�Smad2 pathway to promote the differentiation of regulatory T cells>, COA of Formula: C19H34O2, the main research area is atherosclerosis Buyang Huanwu decoction Smad2 regulatory T cell; Atherosclerosis; Buyang Huanwu decoction; Regulatory T cells; TGF-�Smad2 pathway.

This study aims to elucidate the anti-atherosclerosis mechanism of BYHWD, which may promote the differentiation of regulatory T cells by regulating the TGF-�Smad2 pathway. ApoE-/- mice were fed a high-fat diet for 12 wk, then drugs group were given BYHWD with intragastric administration once a day for 4 wk. The effect of BYHWD on lipid content in peripheral blood and plaque was evaluated by blood lipid test and oil red O staining. The number of Tregs in peripheral blood was tested by flow cytometry, and that in the spleen was evaluated by immunohistochem. methods. Gene and protein expression relating with Tregs differentiation pathway in mice were checked by RT-PCR and Western blot experiments The chem. compositions of BYHWD and rat drug-loaded serum were analyzed by ultra-high performance liquid chromatograph and liquid chromatog.-tandem mass spectrometry. BYHWD significantly reduced plaque area and cholesterol accumulation, increased the number of Tregs in spleen and peripheral blood of ApoE-/- AS mice, raised the proportion of Tregs in CD4+T cells, and regulated the levels of inflammatory factors. The mRNA levels of Foxp3/TGF-�Smad2 were enhanced via BYHWD in vitro. BYHWD regulates TGF-�Smad2 signaling pathway to promotes the peripheral differentiation of Tregs, increases the number of Tregs, restores the immune balance between CD4+T cells, regulates lipid metabolism, inhibits inflammatory reaction and possesses the potential of enhancing plaque stability.

Journal of Ethnopharmacology published new progress about Angelica sinensis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Rubing; Chen, Chengsheng; Zhang, Xiaojie; Zhang, Changde; Zhong, Qiu; Chen, Guanglin; Zhang, Qiang; Zheng, Shilong; Wang, Guangdi; Chen, Qiao-Hong published the artcile< Structure-Activity Relationship and Pharmacokinetic Studies of 1,5-Diheteroarylpenta-1,4-dien-3-ones: A Class of Promising Curcumin-Based Anticancer Agents>, HPLC of Formula: 112-63-0, the main research area is pentadienone curcumin structure pharmacokinetics antitumor neoplasm.

Forty-three 1,5-diheteroaryl-1,4-pentadien-3-ones were designed as potential curcumin mimics, structurally featuring a central five-carbon dienone linker and two identical nitrogen-containing aromatic rings. They were synthesized using a Horner-Wadsworth-Emmons reaction as the critical step and evaluated for their cytotoxicity and antiproliferative activities toward both androgen-insensitive and androgen-sensitive prostate cancer cell lines and an aggressive cervical cancer cell line. Most of the synthesized compounds showed distinctly better in vitro potency than curcumin in the four cancer cell lines. The structure-activity data acquired from the study validated (1E,4E)-1,5-diheteroaryl-1,4-pentadien-3-ones as an excellent scaffold for in-depth development for clin. treatment of prostate and cervical cancers. 1-Alkyl-1H-imidazol-2-yl, ortho pyridyl, 1-alkyl-1H-benzo[d]imidazole-2-yl, 4-bromo-1-methyl-1H-pyrazol-3-yl, thiazol-2-yl, and 2-methyl-4-(trifluoromethyl)thiazol-5-yl were identified as optimal heteroaromatic rings for the promising in vitro potency. (1E,4E)-1,5-Bis(2-methyl-4-(trifluoromethyl)thiazol-5-yl)penta-1,4-dien-3-one, featuring thiazole rings and trifluoromethyl groups, was established as the optimal lead compound because of its good in vitro potency and attractive in vivo pharmacokinetic profiles.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Srivastava, Neha; Alhazmi, Alaa; Mohammad, Akbar; Haque, Shafiul; Srivastava, Manish; Pal, Dan Bahadur; Singh, Rajeev; Mishra, P. K.; Vo, Dai Viet N.; Yoon, Taeho; Gupta, Vijai Kumar published the artcile< Biohydrogen production via integrated sequential fermentation using magnetite nanoparticles treated crude enzyme to hydrolyze sugarcane bagasse>, Application In Synthesis of 112-63-0, the main research area is biohydrogen integrated sequential fermentation magnetite nanoparticle sugarcane bagasse.

This study presents a potential approach to enhance integrated sequential biohydrogen production from waste biomass using magnetite nanoparticle (Fe3O4 NPs) which is synthesized through waste seeds of Syzygium cumini. Consequences of 0.5% Fe3O4 NPs have been investigated on the thermal and pH stability of fungal crude cellulase. It is noticed that Fe3O4 NPs treated enzyme and control exhibits 100% activity in the temperature range of 45-60鎺矯 and 45-55鎺矯, resp. Moreover, Fe3O4 NPs treated enzyme showed extended thermal stability in the temperature range of 50-60鎺矯 up to 12 h. Beside this, Fe3O4 NPs treated enzyme possesses 100% stability in the pH range of 5.0-7.0 whereas control exhibited only at pH 6.0. Enzymic hydrolysis via Fe3O4 NPs treated enzyme has been employed which produces é–?8.0 g/L reducing sugars from sugarcane bagasse. Subsequently, sugar hydrolyzate has been utilized as substrate in the sequential integrated fermentation that produces é–?427.0 mL/L cumulative hydrogen after 408 h. This approach may have potential for the pilot scale production of biohydrogen from waste biomass at low-cost in an eco-friendly manner.

International Journal of Hydrogen Energy published new progress about Bagasse. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Su, Boqing; Tian, Jingyuan; Liu, Mengshi; Wang, Kanghui; Yang, Wanling; Ning, Jinrong; Li, Yongmei; Zheng, Guodong published the artcile< Analysis of the chemical components of pomelo peels (Citrus grandis [L.] Osbeck) from different cultivars by using supercritical CO2 fluid extraction and ultra-high-performance liquid chromatography-tandem mass spectrometry>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Citrus pomelo peel chem supercritical extraction UPLC MS; UHPLC-MS/MS; cultivar; pomelo peel; supercritical fluid extraction.

Five pomelo cultivars (i.e., Citrus grandis cv. Shatianyou, Citrus grandis cv. Guanximiyou, Citrus grandis cv. Yuhuanyou, Citrus grandis cv. Duweiwendanyou and Citrus grandis cv. Liangpingyou) from different origins in China were selected to analyze their components by using supercritical CO2 fluid extraction coupled with ultra-high-performance liquid chromatog.-tandem mass spectrometry. A total of 45 compounds were identified in the supercritical CO2 fluid extracts of the pomelo peels from the five cultivars. These compounds included eight flavonoids, 18 coumarins, four organic acids, three aldehydes, and 12 other compounds, which were identified using the obtained MS data and by comparison with com. standards, orbitrap Chinese Traditional Medicine Library, and previous literature. Twenty-five of the identified compounds were detected for the first time in the pomelo peel extracts Results suggested that the pomelo peels of C. grandis cv. Shatianyou contained the most natural chem. compositions The pooled result may offer scientific evidence for further development and utilization of pomelo peels and a route for screening appropriate varieties for various demands.

Journal of Separation Science published new progress about Citrus grandis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Mohd. Hussin, Fathin Najihah Nor; Attan, Nursyafreena; Abdul Wahab, Roswanira published the artcile< Taguchi design-assisted immobilization of Candida rugosa lipase onto a ternary alginate/nanocellulose/montmorillonite composite: Physicochemical characterization, thermal stability and reusability studies>, Formula: C19H34O2, the main research area is Candida rugosa lipase immobilization nanocellulose; Alginate; Candida rugosa lipase; Enzyme immobilization; Montmorillonite; Nanocellulose; Taguchi optimization.

Biomass from oil palm frond leaves (OPFL) is an excellent reservoir of lignocellulosic material which full potential remains untapped. This study aimed to statistically optimize the covalent immobilization of Candida rugosa lipase (CRL) onto a ternary support comprised of OPFL derived nanocellulose (NC) and montmorillonite (MMT) in alginate (ALG) (CRL-ALG/NC/MMT). The coarser topol. and the presence of characteristic spherical globules in the field emission scanning electron micrographs and at. force micrographs, resp., supported the existence of CRL on ALG/NC/MMT. In addition, amide peaks at 3478 and 1640 cm-1 in the fourier transform IR spectra affirmed that CRL was covalently bonded to ALG/NC/MMT. The optimized Taguchi Design-assisted immobilization of CRL onto ALG/NC/MMT (7 h of immobilization, 35鎺矯, pH 5, 7 mg/mL protein loading) gave a production yield of 92.89% of Et levulinate (EL), as proven by gas chromatog.-mass spectrometric ([M] +m/z 144, C7H12O3), FTIR and NMR (CAS-539-88-8) data. A higher optimal reaction temperature (50鎺矯) and the reusability of CRL-ALG/NC/MMT for up to 9 esterification cycles substantiated the appreciable structural rigidification of the biocatalyst by ALG/NC/MMT, which improved the catalytic activity and thermal stability of the lipase.

Enzyme and Microbial Technology published new progress about Diutina rugosa. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Kuan-Liang; Kuo, Pei-Yu; Han, Jin-Lin; Hsieh, Kuo-Huang published the artcile< Influence of bioadditives made from sugarcane bagasse on interpenetrating polymer networks>, Category: esters-buliding-blocks, the main research area is sugarcane bagasse bioadditive interpenetrating polymer network dynamic mech analysis.

To achieve a sustainable bioeconomy, various bioderived additives have been developed to produce biocomposites, but only a handful of research on biocomposites focuses on the effect of bioderived additives on interpenetrating polymer networks (IPNs). This study is aimed at understanding the interaction between bioadditives and interpenetrating polymer networks and is the first study to build the relationship between bioadditive ratio and damping factor based on dynamic mech. anal. The IPNs were prepolymerized in bulk by isocyanate and poly(oxypropylene) polyol (PPG) with two different mol. weights (PPG 700 and PPG 1000), and then, they were grafted with bisphenol A diglycidyl ether epoxy. The bioadditives were prepared from agricultural waste, sugarcane bagasse, and the effect of the coupling agent 3- glycidoxypropyltrimethoxysilane on a bioadditive surface was also discussed in this study. The results show that modified bioadditives have significant enhancement on tensile strength and tensile modulus of polyurethane-grafted epoxy resin interpenetrating polymer networks (PU(PPG)-EP graft-IPNs). However, the enhancement is not from a strong covalent bond between matrix and additives, i.e., due to the well-dispersed bioadditives which provide stiff segments. The static and dynamic mech. performance, water absorption ratio, and morphol. of the (PU(PPG)-EP graft-IPNs) elastomers were also thoroughly discussed in this study.

International Journal of Polymer Science published new progress about Absorption (water). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Deletsu, Selase D.; Maina, Edward K.; Quaye, Osbourne; Ampofo, William K.; Awandare, Gordon A.; Bonney, Evelyn Y. published the artcile< High resistance to reverse transcriptase inhibitors among persons infected with human immunodeficiency virus type 1 subtype circulating recombinant form 02_AG in Ghana and on antiretroviral therapy>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is lamivudine zidovudine tenofovir antiretroviral agent human immunodeficiency virus type1.

This study sought to determine the dominant circulating human immunodeficiency virus type 1 (HIV-1) subtype and associated drug resistance mutations in Ghana.This cross-sectional study was conducted with archived samples collected from patients who received care at 2 hospitals in Ghana from 2014 to 2016. Blood samples were earlier processed into plasma and peripheral blood mononuclear cells and stored at -80鎺矯. RNA (RNA) was extracted from the archived plasma. Two HIV-1 genes; protease and reverse transcriptase, were amplified, sequenced using gene-specific primers and analyzed for subtype and drug resistance mutations using the Stanford HIV Database.Of 16 patient samples successfully sequenced, we identified the predominance of HIV-1 subtype CRF02_AG (11/16, 68%). Subtypes G (2/16, 13%), dual CRF02_AG/G (2/16, 13%), and CRF01_AE (1/16, 6%) were also observed Major nucleoside reverse transcriptase inhibitor (NRTI) resistance mutations, M184I/V, D67N, T215F, and K70R/E were found. Non-nucleoside reverse transcriptase inhibitor (NNRTI) resistance mutations, K103N, Y181C, V90I, F227L, and V106A were also prevalent. Addnl., and at a lower level, protease inhibitor (PI)-resistance mutations, M46I, I54V, V82A, L90M, and I471V, were also present in the sequences from antiretroviral therapy (ART)-experienced individuals. Two NRTI-associated drug resistance mutations (DRMs) (D67N and T69N) were present in sequences from 1 ART-naive individual.HIV-1 subtype CRF02_AG was most frequently detected in this study thus confirming earlier reports of dominance of this subtype in the West-African sub-region and Ghana in particular. The detection of these drug resistance mutations in individuals on first-line regimen composed of NRTI and NNRTI is an indication of prolonged drug exposure without viral load monitoring. Routine viral load monitoring is necessary for early detection of virol. failure and drug resistance testing will inform appropriate choice of regimens for such patients.

Medicine (Philadelphia, PA, United States) published new progress about Antiviral agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics