Tag: M.W=250-300

Svoboda, Jiri; Palecek, Jaroslav; Dedek, Vaclav; Mostecky, Jiri published the artcile< One-step synthesis of substituted 2-aryl-2-(bromoalkyl)-1,3-dioxolanes>, Electric Literature of 112-63-0, the main research area is bromoketalization cyclic acetophenone; ketalization bromo cyclic acetophenone; dioxolane bromoalkyl aryl.

Bromoketalization of p-RC6H4COCHR1R2 (R = H, Me2CHCH2, Ph, Me, R1 = R2 = H; R = Me2CHCH2, R1 = H, R2 = Me; R = H, R1 = R2 = Me) with ethylene glycol and pyridinium perbromide, dioxane dibromide or PhN+Me3 Br3- gave 35-84% I.

Collection of Czechoslovak Chemical Communications published new progress about Bromination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

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

Jeong, Gwi-Taek; Kim, Sung-Koo published the artcile< Efficient conversion of glucosamine to ethyl levulinate catalyzed by methanesulfonic acid>, Category: esters-buliding-blocks, the main research area is glucosamine ethyl levulinate methanesulfonic acid.

Abstract: This study is focused on the possibility of using crustacean waste shells for sustainable biofuels and chem. production We investigated the synthesis of Et levulinate (EL) from glucosamine by the methanesulfonic acidcatalyzed hydrothermal reaction using Box-Behnken design. In the Et levulinate synthesis, higher water content highly inhibited the formation of EL. Among the reaction factors, reaction temperature, catalyst concentration, and reaction time pos. affected the outcome more than substrate concentration The optimized reaction conditions were 200°C reaction temperature, 60 g/L substrate concentration, 0.75 M catalyst concentration, and 44.9 min. Under these conditions, a 22.76 mol% EL yield was achieved. These results suggest that crustacean waste shells can be used for renewable feedstocks to produce valuable chems. and biofuels.

Korean Journal of Chemical Engineering published new progress about Temperature effects, biological. 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

Liang, Xisong; Zhang, Hao; Wang, Zeyu; Zhang, Xun; Dai, Ziyu; Zhang, Jian; Luo, Peng; Zhang, Longbo; Hu, Jason; Liu, Zaoqu; Bi, Changlong; Cheng, Quan published the artcile< JMJD8 Is an M2 macrophage biomarker, and it associates With DNA damage repair to facilitate stemness maintenance, chemoresistance, and immunosuppression in pan-cancer>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is cancer JMJD8 macrophage biomarker DNA damage repair chemoresistance immunosuppression; DNA damage repair (DDR); Jumonji domain containing 8; homologous recombination repair (HRR); immunosuppression; macrophage; pan-cancer.

JMJD8 has recently been identified as a cancer-related gene, but current studies provide limited information. We aimed to clarify its roles and the potential mechanisms in pan-cancer. Pan-cancer bulk sequencing data and online web tools were applied to analyze JMJD8’s correlations with prognosis, genome instability, cancer stemness, DNA repair, and immune infiltration. Moreover, single-cell datasets, SpatialDB database, and multiple fluorescence staining were used to validate the association between JMJD8 expression and M2 macrophages. Further, we utilized ROCplotter and cMap web tool to analyze the therapeutic responses and screened JMJD8-targeted compounds, resp., and we used AlphaFold2 and Discovery Studio to conduct JMJD8 homol. modeling and mol. docking. We first noticed that JMJD8 was an oncogene in many cancer types. High JMJD8 was associated with lower genome stability. We then found that high JMJD8 correlated with high expression of mismatch repair genes, stemness, homologous repair gene signature in more than 9 cancers. Estimate and cytokine analyses results presented JMJD8’s association with immunosuppression. Also, immune checkpoint CD276 was pos. relevant to JMJD8. Subsequently, we validated JMJD8 as the M2 macrophage marker and showed its connection with other immunosuppressive cells and CD8+ T-cell depression. Finally, potential JMJD8-targeted drugs were screened out and docked to JMJD8 protein. We found that JMJD8 was a novel oncogene, and it correlated with immunosuppression and DNA repair. JMJD8 was highly associated with immune checkpoint CD276 and was an M2 macrophage biomarker in many cancers. This study will reveal JMJD8’s roles in pan-cancer and its potential as a novel therapeutic target.

Frontiers in Immunology published new progress about Adenoid cystic carcinoma. 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

Hu, Yu-qi; Fan, Shi-yong; Shi, Wei-guo; Zhong, Bo-hua published the artcile< Design, synthesis and preliminary evaluation of camptothecin derivatives>, Quality Control of 112-63-0, the main research area is camptothecin derivative Schiff base design synthesis antitumor.

Objective To design new camptothecin derivatives in order to discover the camptothecin derivatives of better bioavailability and higher anti-tumor activity. Methods Two series of camptothecin derivatives were designed and synthesized by introducing biocompatible carboxyl groups and the schiff base structure to investigate their antitumor activities in vitro. Results There were eleven camptothecin derivatives synthesized. All the compounds were identified by 1H-NMR and MS. Most of the derivative compounds showed much greater anti-tumor activities against SPCA-1 and MCF-79 cell lines than irinotecan in vitro. Conclusion The schiff base structure has been proved to improve the anti-tumor activity of camptothecin. The anti-tumor activity of the carboxyalkyl class target compound can be enhanced with the increased length of the fatty acid chain.

Jiefangjun Yaoxue Xuebao published new progress about Antitumor agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

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

Yuan, Ye; Yang, Yajie; Faheem, Muhammad; Zou, Xiaoqin; Ma, Xujiao; Wang, Zeyu; Meng, Qinghao; Wang, Lili; Zhao, Shuai; Zhu, Guangshan published the artcile< Molecularly Imprinted Porous Aromatic Frameworks Serving as Porous Artificial Enzymes>, Application In Synthesis of 112-63-0, the main research area is molecularly imprinted porous aromatic framework artificial enzyme organophosphorus hydrolase; artificial enzymes; catalysis; molecular imprinting technology; organophosphorus; porous aromatic frameworks.

Artificially designed enzymes are in demand as ideal catalysts for industrial production but their dense structure conceals most of their functional fragments, thus detracting from performance. Here, molecularly imprinted porous aromatic frameworks (MIPAFs) which are exploited to incorporate full host-guest interactions of porous materials within the artificial enzymes are presented. By decorating a porous skeleton with molecularly imprinted complexes, it is demonstrated that MIPAFs are porous artificial enzymes possessing excellent kinetics for guest mols. In addition, due to the abundance of accessible sites, MIPAFs can perform a wide range of sequential processes such as substrate hydrolysis and product transport. Through its two functional sites in tandem, the MIPAF subsequently manifests both hydrolysis and transport behaviors. Advantageously, the obtained catalytic rate is ≈58 times higher than that of all other conventional artificial enzymes and even surpasses by 14 times the rate for natural organophosphorus hydrolase (OPH) from Flavobacterium sp. strain ATCC 27551.

Advanced Materials (Weinheim, Germany) published new progress about Complexation (Zn2+). 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

Pennington, Michael W. published the artcile< Site-specific chemical modification procedures>, HPLC of Formula: 112-63-0, the main research area is regioselective chem modification peptide.

Several convenient methods for preparing specifically positioned chem. modified peptides are described. These include solid-phase and some solution procedures.

Methods in Molecular Biology (Totowa, NJ, United States) published new progress about Acetylation. 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

Das, Tamal Kanti; Madica, Krishnaprasad; Krishnan, Jagadeesh; Marelli, Udaya Kiran; Biju, Akkattu T. published the artcile< N-Heterocyclic Carbene Catalysis Exploiting Oxidative Imine Umpolung for the Generation of Imidoyl Azoliums>, Synthetic Route of 112-63-0, the main research area is trifluoromethylated benzoxazine preparation cyclization catalysis umpolung aldimine; aromatic aldehyde amino benzyl alc heterocyclic carbene cyclization.

Although NHC-catalyzed umpolung of imines are known, the related reactions under oxidative conditions are limited. Described herein is the two-step process involving the initial formation of aldimines from the corresponding aldehydes and 2-amino benzyl alcs. followed by NHC-catalyzed cyclization proceeding via the imidoyl azoliums under oxidative conditions. The reaction allowed the synthesis of trifluoromethylated 3,1-benzoxazines in good yields and broad scope. The role of NHC in the intramol. cyclization and preliminary mechanistic experiments are also provided.

Journal of Organic Chemistry published new progress about Aldimines 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, Synthetic Route of 112-63-0.

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

Yoneda, Norihiko; Kiuchi, Takashi; Fukuhara, Tsuyoshi; Suzuki, Akira; Olah, George A. published the artcile< Superacid catalyzed oxygenation of aliphatic ethers with ozone>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is protonated ozone insertion ether; oxoether; ketone alkoxy; superacid catalyzed oxygenation ether.

Treating aliphatic ethers Me(CH2)nOMe (n = 3, 4, 5), [Me(CH2)m]2O (m = 3, 4) or oxepane in HF-SbF5 at -20 to -40° with O2 containing 2.5% O3 gave good yields of oxo ethers, e.g., MeC(O)(CH2)n-1OMe, [MeC(O)(CH2)m-1]2O, and 3-oxepanone. Insertion occurred at the farthest secondary C-H bond from the O atom in ethers possessing straight chain alkyl groups with more than or = for C atoms.

Chemistry Letters published new progress about Aliphatic ethers Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Bruun, Nina; Tesfaye, Fiseha; Hemming, Jarl; Dirbeba, Meheretu Jaleta; Hupa, Leena published the artcile< Effect of storage time on the physicochemical properties of waste fish oils and used cooking vegetable oils>, Application of C19H34O2, the main research area is waste fish cooking vegetable oil storage time physicochem property.

Waste fish oils (FOs) and used cooking vegetable oils (UCOs) are increasingly becoming alternative renewable fuels. However, different physicochem. aspects of these renewable fuels, including the effect of storage, are not well-known. In this work, the effect of the storage period on physicochem. properties of selected samples of FOs and UCOs was investigated. The bio-oils were stored at 4 °C for up to five years before each experimentation. The chem. properties were characterized using capillary gas chromatog. with flame ionization detection (GC-FID) and high-performance size exclusion chromatog. including an evaporative light scattering detector (HPSEC-ELSD). Water contents and acid numbers of the bio-oils were determined using the Karl Fischer (KF) titration and the ASTM D 664 methods. Furthermore, the average heating values and surface tension of the bio-oils were determined According to the results obtained, for all bio-oil types, the concentrations of polymerized triglycerides, diglycerides, and fatty acids and monoglycerides had increased during the storage periods. The phys. properties of the bio-oils also showed a small variation as a function of the storage period. The overall results observed indicate that the deterioration of the physicochem. properties of bio-oils can be controlled through storage in dark, dry, and cold conditions.

Energies (Basel, Switzerland) published new progress about Density. 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

Park, Kyung-Ho; Kim, Soo; Yum, Eul Kgun; Cho, Sung Yun; Hwang, Ki-Jin; Yu, Chan-Mo published the artcile< Novel migration of aryl group in pyrazolyl aryl ether>, Formula: C19H34O2, the main research area is aryl group migration pyrazolyl ether.

Pyrazoles I (R1 = Ph, Me, R2 = Me, X = 2-Cl, 2,6-Cl2; R1 = CF3CH2, R2 = Ph, X = 2,6-Cl2, R1 = Me3C, R2 = CF3, X = 2,6-Cl2) rearranged to pyrazolyl alcs. II in the presence of K2CO3 or KHCO3.

Bulletin of the Korean Chemical Society published new progress about Rearrangement. 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