Category: esters-buliding-blocks

Siddiqui, Hina; Shafi, Sarah; Ali, Hamad; Musharraf, Syed Ghulam published the artcile< Synthesis and Erythroid Induction Activity of New Thiourea Derivatives>, Name: 4-tert-Butylphenylisothiocyanate, the main research area is thiourea fetal Hb erythroid; HbF induction effect; Thiourea derivatives; cytotoxicity; erythroid induction activity; sickle-cell anemia and β-thalassemia; β-thalassemia.

The erythroid induction potential of newly synthesized thiourea derivatives Thiourea derivatives 1-27 were synthesized by using environmentally friendly methods and new compounds 3, 10 and 22 The structures of synthesized derivatives were deduced by using various spectroscopic techniques. These derivatives were then evaluated for their erythroid induction using the human erythroleukemic K562 cell line, as a model. The benzidine-H2O2 assay was used to evaluate erythroid induction, while HbF expression was studied through immunocytochem. using the Anti-HbF antibody. Cytotoxicity of compounds 1-27 was also evaluated on mouse fibroblast 3T3 cell line and cancer Hela cell line using MTT assay. All the compounds (1-27) have not been reported for their erythroid induction activity previously. Compounds 1, 2, and 3 were found to be the potent erythroid inducing agents with % induction of 45± 6.9, 44± 5.9, and 41± 6.1, at 1.56, 0.78, and 0.78 μM concentrations, resp., as compared to untreated control (12 ± 1 % induction). Furthermore, compound 1, 2, and 3 significantly induced fetal Hb the expression up to 4.2-fold, 4.06-fold, and 3.52-fold, resp., as compared to untreated control. Moreover, the compounds 1-4, 6-9, 11, 12, 15, 17, 19, 22, 23, and 25 were found to be non-cytotoxic against the 3T3 cell line. This study signifies that the compounds reported here may serve as the starting point for the designing and development of new fetal Hb inducers for the treatment of beta-hemoglobinopathies.

Medicinal Chemistry (Sharjah, United Arab Emirates) published new progress about Cytotoxicity. 19241-24-8 belongs to class esters-buliding-blocks, and the molecular formula is C11H13NS, Name: 4-tert-Butylphenylisothiocyanate.

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

Saito, Seiki; Ishikawa, Teruhiko; Kuroda, Akiyoshi; Koga, Kazuya; Moriwake, Toshio published the artcile< A revised mechanism for chemoselective reduction of esters with borane-dimethyl sulfide complex and catalytic sodium tetrahydroborate directed by adjacent hydroxyl group>, Related Products of 617-55-0, the main research area is ester reduction chemoselectivity borane dimethyl sulfide; sodium borohydride reduction ester stereochem; chiral synthon.

The plausible mechanism for the reduction of the ester groups with a strong preference for one located α to the hydroxyl groups of (S)-malates and (R,R)-tartrate-based derivatives has been proposed together with some results with regard to its applications to the synthesis of chiral synthons. Thus, reduction of di-Et (S)-maleate with BH3·SMe2 in THF in the presence of catalytic NaBH4 gave 97% Et (3S)-3,4-dihydroxybutanoate.

Tetrahedron published new progress about Chiral synthons. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Related Products of 617-55-0.

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

Wu, Xiaoting; Qi, Xiaoyi; Wang, Jing; Zhang, Yunying; Xiao, Yanwei; Tu, Caixia; Wang, Aoxue published the artcile< Paeoniflorin attenuates the allergic contact dermatitis response via inhibiting the IFN-γ production and the NF-κB/IκBα signaling pathway in T lymphocytes>, Computed Properties of 112-63-0, the main research area is paeoniflorin attenuate allergic dermatitis inhibiting IFNG NFkB IkBa signaling; Allergic contact dermatitis; Mice; NF-κB signaling pathway; Paeoniflorin; T lymphocytes.

Paeoniflorin (PF) has been demonstrated to have an anti-allergic and anti-inflammatory effect in the treatment of allergic contact dermatitis (ACD). However, its clin. application is hampered by the lacking of comprehensive mech. explanation. This research aimed to study the effect of PF on the proliferation, apoptosis and cytokines secretion as well as the expression of nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways of T lymphocytes activation in vitro and in vivo. We found that PF depressed human T lymphocytes activation via inhibition of interferon-gamma (IFN-γ) production and NF-κB/IκBα and p38 MAPK signaling pathway in vitro, also PF could attenuate such ACD responses by inhibiting the production of IFN-γ and NF-κB/IκBα pathway in T lymphocytes of ACD mouse model, suggesting that PF might be useful for the treatment of T cell-mediated allergic inflammatory disorders such as ACD. This would make PF a promising T cell-targeted drug candidate for further study because of its immunosuppressive and anti-inflammatory effects.

International Immunopharmacology published new progress about Allergic contact dermatitis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

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

Kvasnica, M.; Oklestkova, J.; Bazgier, V.; Rarova, L.; Korinkova, P.; Mikulik, J.; Budesinsky, M.; Beres, T.; Berka, K.; Lu, Q.; Russinova, E.; Strnad, M. published the artcile< Design, synthesis and biological activities of new brassinosteroid analogues with a phenyl group in the side chain>, COA of Formula: C19H34O2, the main research area is brassinolide analog preparation plant hormone antitumor agent cytotoxicity; etiolated pea seedlings plant hormone ethylene production differences.

We have prepared and studied a series of new brassinosteroid derivatives with a p-substituted Ph group in the side chain. To obtain the best comparison between mol. docking and biol. activities both types of brassinosteroids were synthesized; 6-ketones, 10 examples, and B-lactones, 8 examples. The Ph group was introduced into the steroid skeleton by Horner-Wadsworth-Emmons. The docking studies were carried out using AutoDock Vina 1.05. Plant biol. activities were established using different brassinosteroid bioassays in comparison with natural brassinosteroids. Differences in the production of the plant hormone ethylene were also observed in etiolated pea seedlings after treatment with new brassinosteroids. The most active compounds were lactone I and 6-oxo derivatives II [R2 = H, F], their biol. activities were comparable or even better than naturally occurring brassinolide. Finally the cytotoxicity of the new derivatives was studied using human normal and cancer cell lines.

Organic & Biomolecular Chemistry published new progress about Antiproliferative agents (weak to moderate). 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

Whitehead, Daniel C.; Fhaner, Matthew; Borhan, Babak published the artcile< A peptide bromoiodinane approach for asymmetric bromolactonization>, SDS of cas: 112-63-0, the main research area is bromomethylphenyltetrahydrofuranone enantioselective preparation; phenylpentenoic acid asym bromolactonization iodoarylpeptide catalyst; iodoarylpeptide solid phase preparation bromolactonization.

A series of 37 peptides containing an iodo-aryl amide active site were generated by means of both solid phase and conventional synthesis. These peptides were screened for asym. induction in the bromolactonization of 4-phenyl-4-pentenoic acid based on the generation of chiral bromoiodinane bromenium sources. The study culminated in the discovery of a tri-peptide iodo-aryl amide that effected the desired bromolactonization in quant. conversion with 24% ee. The experiments disclosed herein provided valuable insight that ultimately facilitated the development of more synthetically useful enantioselective halocyclization methodol.

Tetrahedron Letters published new progress about Enantioselective synthesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

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

Rozsar, Daniel; Formica, Michele; Yamazaki, Ken; Hamlin, Trevor A.; Dixon, Darren J. published the artcile< Bifunctional Iminophosphorane Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides>, Application In Synthesis of 112-63-0, the main research area is bifunctional iminophosphorane catalyst preparation potential energy surface; unsaturated amide thiol iminophosphorane catalyst enantioselective Michael addition; thioamide preparation.

The first metal-free catalytic intermol. enantioselective Michael addition to unactivated α,β-unsaturated amides was described. Consistently high enantiomeric excesses and yields were obtained over a wide range of alkyl thiol pronucleophiles and electrophiles under mild reaction conditions, enabled by a novel squaramide-based bifunctional iminophosphorane (BIMP) catalyst. Low catalyst loadings (2.0 mol %) were achieved on a decagram scale, demonstrating the scalability of the reaction. Computational anal. revealed the origin of the high enantiofacial selectivity via anal. of relevant transition structures and provided substantial support for specific noncovalent activation of the carbonyl group of the α,β-unsaturated amide by the catalyst.

Journal of the American Chemical Society published new progress about Enantioselective synthesis. 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

Cabaj, John E.; Kairys, David; Benson, Thomas R. published the artcile< Development of a Commercial Process to Produce Oxandrolone>, Related Products of 112-63-0, the main research area is Oxandrolone preparation.

A manufacturing scale process for the preparation of the anabolic steroid Oxandrolone was developed. Key elements included the following: the bromination of methylandrostanolone with perbromide to give the 2-bromoketone in ca. 80% yield with minimal dehydration, subsequent elimination of the bromide with Li2CO3/LiBr to give the 2-enone in ca. 70% yield with minimal formation of methyltestosterone, and an ozonolysis procedure to give the penultimate intermediate in ca. 90% yield. The overall yield from methylandrostanolone to Oxandrolone using the described process was 45% as compared to the original Searle yield of 8%.

Organic Process Research & Development published new progress about Bromination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

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

Shang, Jiaojiao; Lin, Shaojian; Theato, Patrick published the artcile< UV-triggered shape-controllable PP fabric>, COA of Formula: C9H3F5O2, the main research area is polypropylene fabric spin coating glass transition temperature flexibility.

A light-driven polypropylene (PP) fabric as an actuator was fabricated in which a light-responsive polymeric film acts as an active layer and a PP fabric acts as a passive layer. For this, poly[di(ethylene glycol)methyl ether methacrylate-co-pentafluorophenyl acrylate] P(DEGMA-co-PFPA) containing reactive pentafluorophenyl esters was synthesized as a precursor polymer. Owing to the highly reactive esters on P(DEGMA-co-PFPA), photoactive azobenzene moieties were introduced onto the polymer backbone via a post-modification polymerization strategy to form a light-responsive polymer, poly[di(ethylene glycol)methyl ether methacrylate-co-4-(4-methoxy-phenylazo) acrylate] (P(DEGMA-co-MOPAzo)). Interestingly, this copolymer can be attached in a simple and stable manner to the surface of a PP fabric via phys. adsorption to build a light-responsive PP fabric. On account of its light responsiveness, this functional polymer PP fabric can immediately respond to a UV stimulus and show a reversible shape transition upon alternating exposure to UV irradiation and the addition of heat.

Polymer Chemistry published new progress about Actuators. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, COA of Formula: C9H3F5O2.

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

Scheuerman, R. A.; Tumelty, D. published the artcile< The reduction of aromatic nitro groups on solid supports using sodium hydrosulfite (Na2S2O4)>, Category: esters-buliding-blocks, the main research area is reduction aromatic nitro group hydrosulfite solid support; polyethyleneglycol polystyrene resin reduction nitroarom hydrosulfite; tin dichloride reduction nitroarom solid support.

An improved method for reducing aromatic nitro compounds on solid-phase supports using sodium hydrosulfite is presented. Conditions have been optimized to enable the use of this reagent for reductions on both polyethyleneglycol-polystyrene resins and traditional polystyrene resins.

Tetrahedron Letters published new progress about Aromatic amines Role: SPN (Synthetic Preparation), 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

Matsuda, Shoichi; Yamaguchi, Shoji; Yasukawa, Eiki; Asahina, Hitoshi; Kakuta, Hirofumi; Otani, Haruhiko; Kimura, Shin; Kameda, Takashi; Takayanagi, Yoshiki; Tajika, Akihiko; Kubo, Yoshimi; Uosaki, Kohei published the artcile< Effect of Electrolyte Filling Technology on the Performance of Porous Carbon Electrode-Based Lithium-Oxygen Batteries>, Computed Properties of 112-63-0, the main research area is lithium oxygen batteries electrolyte carbon electrode.

Although the theor. energy densities of lithium-oxygen batteries (LOBs) far exceed those of lithium-ion batteries, the practical values of the LOBs are usually much lower because of the use of large electrolyte excesses. Thus, to realize LOBs with a high practical energy d., the electrolyte amount should be minimized without compromising their performance. To address this challenge, we herein investigate the influence of several electrolyte filling techniques on the performance of LOBs, revealing that the battery discharge/charge profiles are strongly influenced by the uniformity of electrolyte distribution in the porous carbon electrode. The obtained results show the importance of electrolyte filling technol. for realization of practical high-energy-d. LOBs and facilitate their further development.

ACS Applied Energy Materials published new progress about Battery electrodes. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

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