Month: October 2022

Zhang, Xiaojie; Guo, Shanchun; Chen, Chengsheng; Perez, German Ruiz; Zhang, Changde; Patanapongpibul, Manee; Subrahmanyam, Nithya; Wang, Rubing; Keith, Joshua; Chen, Guanglin; Dong, Yan; Zhang, Qiang; Zhong, Qiu; Zheng, Shilong; Wang, Guangdi; Chen, Qiao-Hong published the artcile< Asymmetric 1,5-diarylpenta-1,4-dien-3-ones: Antiproliferative activity in prostate epithelial cell models and pharmacokinetic studies>, Quality Control of 112-63-0, the main research area is bisdiethylphosphonato acetone heteroaryl aldehyde diastereoselective Horner Wadsworth Emmons reaction; oxo heteroarylbutenyl phosphonate preparation aldehyde diastereoselective Horner Wadsworth Emmons; diheteroarylpentadienone preparation antitumor activity SAR apoptosis acute toxicity; 1,5-Diheteroarylpenta-1,4-dien-3-one; Cell apoptosis; Cell proliferation; Pharmacokinetic study; Prostate cancer.

To further engineer dienones with optimal combinations of potency and bioavailability, thirty-four asym. 1,5-diarylpenta-1,4-dien-3-ones I [R1 = 1-(sec-butyl)-1H-imidazol-2-yl, pyridin-2-yl, 1-isopropyl-1H-benzo[d]imidazol-2-yl, etc.; R2 = 3,4-dimethoxyphenyl, thiazol-2-yl, 2-(piperidin-1-yl)thiazol-5-yl, etc.] were designed and synthesized for the evaluation of their in vitro anti-proliferative activity in three human prostate cancer cell lines and one non-neoplastic prostate epithelial cell line. All these asym. dienones I were sufficiently more potent than curcumin and their corresponding sym. counterparts. The optimal dienone I [R1 = 1-isopropyl-1H-benzo[d]imidazol-2-yl; R2 = pyridin-2-yl], with IC50 values in the range of 0.03-0.12 μM, was 636-, 219-, and 454-fold more potent than curcumin in three prostate cancer cell models. Dienones I [R1 = 1-(sec-butyl)-1H-imidazol-2-yl (II), 1-ethyl-1H-benzo[d]imidazol-2-yl; R2 = 2-methyl-4-(trifluoromethyl)thiazol-5-yl] emerged as the most promising asym. dienones that warrant further preclin. studies. The two lead compounds demonstrated substantially improved potency in cell models and superior bioavailability in rats, while exhibiting no acute toxicity in the animals at the dose of 10 mg/kg. Dienones II and I [R1 = 1-propyl-1H-benzo[d]imidazole-2-yl, R2 = 1-propyl-1H-imidazole-2-yl (III)] could induce PC-3 cell cycle regulation at the G0/G1 phase. However, dienone II induced PC-3 cell death in a different way from III even though they share the same scaffold, indicating that terminal heteroaromatic rings were critical to the action of mechanism for each specific dienone.

European Journal of Medicinal Chemistry published new progress about Acute toxicity. 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

Luo, Zhenli; Wan, Shanhong; Pan, Yixiao; Yao, Zhen; Zhang, Xin; Li, Bohan; Li, Jiajie; Xu, Lijin; Fan, Qing-Hua published the artcile< Metal-Free Reductive Amination of Ketones with Amines Using Formic Acid as the Reductant under BF3 · Et2O Catalysis>, Synthetic Route of 94-02-0, the main research area is ketone amine formic acid boron trifluoride etherate reductive amination; alkylamine preparation.

BF3·Et2O was found to effectively catalyze reductive amination of ketones with amines employing formic acid as the reductant under metal-free conditions. This transformation tolerated a broad range of primary and secondary amines and differently decorated ketones, delivering N-alkylated amines in good to excellent yields with high compatibility of functional groups. The synthetic potential of this protocol was demonstrated by its application in the preparation of biol. and pharmaceutically relevant compounds

Asian Journal of Organic Chemistry published new progress about Amines Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Synthetic Route of 94-02-0.

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

Mugemana, Clement; Grysan, Patrick; Dieden, Reiner; Ruch, David; Bruns, Nico; Dubois, Philippe published the artcile< Self-Healing Metallo-Supramolecular Amphiphilic Polymer Conetworks>, Related Products of 71195-85-2, the main research area is pentafluorophenyl acrylate polydimethylsiloxane zinc supramol amphiphilic polymer conetwork.

The current challenge in self-healing materials resides in the design of materials which exhibit improved mech. properties and self-healing ability. The design of phase-separated nanostructures combining hard and soft phases represents an attractive approach to overcome this limitation. Amphiphilic polymer conetworks are nanostructured materials with robust mech. properties, which can be tailored by tuning the polymer composition and chem. functionality. This article highlights the design of phase-separated nanostructured polymers from metallo-supramol. amphiphilic polymer conetworks, and their application for self-healing surfaces. The synthesis of poly(N-(pyridin-4-yl)acrylamide)-l-polydimethylsiloxane polymer conetworks from the poly(pentafluorophenyl acrylate)-l-polydimethylsiloxane activated ester is presented. Loading of ZnCl2 salt into the phase-separated polymer conetwork strengthens the network by crosslinking the poly(N-(pyridin-4-yl)acrylamide) phases, while offering reversible interactions needed for self-healing ability.

Macromolecular Chemistry and Physics published new progress about Amphiphiles. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, Related Products of 71195-85-2.

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

Pistelli, Luisa; Benassi, Sandra; Migliore, Lucia; Papa, Stefania; Andreassi, Maria Grazia published the artcile< Synthesis and biological activity of a series of isoindolone derivatives related to cytochalasins>, Reference of 112-63-0, the main research area is isoindolone derivative preparation lymphocyte binucleation cytostatic; cytochalasin analog preparation lymphocyte binucleation cytostatic.

A series of hydrogenated isoindolone derivatives structurally related to cytochalasin B has been synthesized and their ability to induce binucleation in the human lymphocytes were tested. All compounds were found able to inhibit cell cytokinesis at different extent in the range (3.12-25 μmol/L) respect to the neg. control; however the highest percentage of binucleated cells is induced by Cytochalasin B.

Farmaco published new progress about Cytokinesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

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

Calleros, Erasmo Lopez; Simonovsky, Felix I.; Garty, Shai; Ratner, Buddy D. published the artcile< Crosslinked, biodegradable polyurethanes for precision-porous biomaterials: Synthesis and properties>, Reference of 112-63-0, the main research area is microporous crosslinked biodegradable polyurethane tissue engineering scaffold property biocompatibility.

Crosslinked poly(ester urethane)s and their acrylate derivatives based on trifunctional polycaprolactone and trifunctional aliphatic isocyanates were synthesized. Biodegradable scaffolds with uniform, controlled micron-scale porosity were fabricated with these materials. Mech. and swelling properties of monolithic and microporous materials were studied. Cytotoxicity, hydrolytic, and enzymic degradation and their effects on mech. properties of the biodegradable scaffolds were investigated. The polymer degradation products were found not to be cytotoxic at moderate concentrations and to permit cell attachment and spreading. Degradation rates and mech. properties could be tuned to desired performance criteria for a given application by adjusting crosslink d. and the ratio of hard segment to soft segment. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48943.

Journal of Applied Polymer Science published new progress about Biocompatibility. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

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

Linetsky, Mikhail; LeGrand, Roy D.; Mossine, Valeri V.; Ortwerth, B. J. published the artcile< Sugar-mediated crosslinking of α-biotinylated-Lys to cysteamine-agarose support: a method to isolate Maillard Lys-Lys-like crosslinks>, Quality Control of 112-63-0, the main research area is advanced glycation endproduct lysine crosslink Maillard reaction.

Advanced glycation end products (AGEs) and, specifically, protein-protein AGE crosslinks have long been studied for their potential role in aging, diabetic complications and Alzheimer disease. With few exceptions, the chem. nature of these structures remains unknown. We report here a simple approach that allows the preparation and isolation of milligram quantities of sugar-mediated AGE Lys-Lys-like crosslinks from glycation mixtures The method is based on a sugar-dependent incorporation of Nα-biotinyl-L-Lys into cysteaminyldisulfide Sepharose 6B (AE-S-S-Sepharose 6B). Glycation mixtures with six different sugars showed a time- and sugar-dependent decrease in the concentration of the support-bound primary amino groups and accounted for almost 90% loss of cysteaminyl amino groups at the end of the various incubation periods. 4-Hydroxyazobenzene-2-carboxylic acid-avidin assays indicated the incorporation of Nα-biotinyl-L-Lys equal to 8% of the total support amino groups with methylglyoxal after 7 d and 1% with fructose and glucose after 1 mo of incubation. Treatment of the washed, sugar-modified supports with 2-mercaptoethanol released the bulk of the bound AGE modifications and the crosslinks. Subsequent fractionation of these preparations over a monomeric avidin column afforded a complete separation of sugar-mediated AGE modifications and the crosslinks. Depending on the sugar employed, micromolar amounts of biotinylated Lys-Lys-like crosslinks were generated by this two-step procedure from 8 mL of the original AE-S-S-Sepharose 6B.

Applied Biochemistry and Biotechnology published new progress about Advanced glycosylation end products Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Ambady, Prakash; Wu, Yingjen Jeffrey; Kersch, Cymon N.; Walker, Joshua M.; Holland, Samantha; Muldoon, Leslie L.; Neuwelt, Edward A. published the artcile< Radiation enhances the delivery of antisense oligonucleotides and improves chemo-radiation efficacy in brain tumor xenografts>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is antisense oligonucleotide chemoradiation brain tumor xenografts.

Overexpression of O6-methylguanine DNA methyltransferase (MGMT) contributes to resistance to chemo-radiation therapy (CRT) in brain tumors. We previously demonstrated that non-ablative radiation improved delivery of anti-MGMT morpholino oligonucleotides (AMONs) to reduce MGMT levels in s.c. tumor xenografts. We evaluate this approach to enhance CRT efficacy in rat brain tumor xenograft models. The impact of radiation on targeted delivery was evaluated using fluorescent oligonucleotides (f-ON). In vitro, f-ON was localized to clathrin-coated vesicles, endosomes, and lysosomes using confocal microscopy in T98G glioma cells. In vivo, fluorescence was detected in pre-radiated, but not non-radiated Long Evans (non-tumor bearing) rat brains. Cranial radiation (2 Gy) followed by AMONs (i.v., 10.5 mg/kg) reduced MGMT expression by 50% in both orthotopic cerebellar D283 medulloblastoma and intracerebral H460 non-small cell lung carcinoma (NSCLC) xenograft models. To evaluate the efficacy, AMONs concurrent with CRT (2 Gy radiation plus oral 20 mg/kg temozolomide x4 days) reduced tumor volumes in the medulloblastoma model (p = 0.012), and a similar trend was found in the NSCLC brain metastasis model. We provide proof of concept for the use of non-ablative radiation to guide and enhance the delivery of morpholino oligonucleotides into brain tumor xenograft models to reduce MGMT levels and improve CRT efficacy.

Cancer Gene Therapy published new progress about Allograft inflammatory factor 1 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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

Hollenhorst, Marie A.; Bumpus, Stefanie B.; Matthews, Megan L.; Bollinger, J. Martin Jr.; Kelleher, Neil L.; Walsh, Christopher T. published the artcile< The Nonribosomal Peptide Synthetase Enzyme DdaD Tethers Nβ-Fumaramoyl-L-2,3-diaminopropionate for Fe(II)/α-Ketoglutarate-Dependent Epoxidation by DdaC during Dapdiamide Antibiotic Biosynthesis>, Recommanded Product: (S)-tert-Butyl 3-amino-2-((tert-butoxycarbonyl)amino)propanoate, the main research area is Pantoea nonribosomal peptide synthetase DdaD epoxidation DdaC DdaF dapdiamide.

The gene cluster from Pantoea agglomerans responsible for biosynthesis of the dapdiamide antibiotics encodes an adenylation-thiolation didomain protein, DdaD, and an Fe(II)/α-ketoglutarate-dependent dioxygenase homolog, DdaC. Here we show that DdaD, a nonribosomal peptide synthetase module, activates and sequesters Nβ-fumaramoyl-L-2,3-diaminopropionate as a covalently tethered thioester for subsequent oxidative modification of the fumaramoyl group. DdaC catalyzes Fe(II)- and α-ketoglutarate-dependent epoxidation of the covalently bound Nβ-fumaramoyl-L-2,3-diaminopropionyl-S-DdaD species to generate Nβ-epoxysuccinamoyl-DAP (DAP = 2,3-diaminopropionate) in thioester linkage to DdaD. After hydrolytic release, Nβ-epoxysuccinamoyl-DAP can be ligated to L-valine by the ATP-dependent ligase DdaF to form the natural antibiotic Nβ-epoxysuccinamoyl-DAP-Val.

Journal of the American Chemical Society published new progress about Antibiotics (dapdiamide). 77215-54-4 belongs to class esters-buliding-blocks, and the molecular formula is C12H24N2O4, Recommanded Product: (S)-tert-Butyl 3-amino-2-((tert-butoxycarbonyl)amino)propanoate.

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