Month: October 2022

《Complexation of methyl salicylate with β-cyclodextrin and its release characteristics for active food packaging》 was written by Lee, Myungho; Dey, Kartick Prasad; Lee, Youn Suk. Name: Methyl Salicylate And the article was included in Food Science and Biotechnology in 2020. The article conveys some information:

A series of Me salicylate (MeSA)/β-cyclodextrin (β-CD) inclusion complexes (ICs) were prepared at different MeSA concentrations by the co-precipitation method using Me salicylate for maintaining the quality of fresh produce. The formation of IC was confirmed through FTIR, 1H NMR, TGA, and SEM measurements. Among the grades applied, IC with 1:1 grade showed the highest MeSA entrapment efficiency (59%). The release rate of MeSA from an IC was greater at higher temperature and higher relative humidity. In addition, the MeSA release from ICs of all grades followed a diffusive nature and first-order kinetics at 25°C under all RH conditions, except at 7°C. These results indicate that the use of a MeSA/β-CD IC in active packaging applications can effective maintain the quality of fresh produce. In the experiment, the researchers used Methyl Salicylate(cas: 119-36-8Name: Methyl Salicylate)

Methyl Salicylate(cas: 119-36-8) is a natural herbivore-induced plant volatile. It is a naturally occurring product in trees, legumes, exotic plants, vegetables, berries, and the primary constituent of the oil of wintergreen.Methyl Salicylate is produced from salicylic acid.Name: Methyl Salicylate

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

《Structure-Based Design, Synthesis, and Biological Evaluation of New Triazolo[1,5-a]Pyrimidine Derivatives as Highly Potent and Orally Active ABCB1 Modulators》 was written by Wang, Shuai; Wang, Sai-Qi; Teng, Qiu-Xu; Yang, Linlin; Lei, Zi-Ning; Yuan, Xiao-Han; Huo, Jun-Feng; Chen, Xiao-Bing; Wang, Mengru; Yu, Bin; Chen, Zhe-Sheng; Liu, Hong-Min. Computed Properties of C7H12O3 And the article was included in Journal of Medicinal Chemistry in 2020. The article conveys some information:

ABCB1 is a promising therapeutic target for overcoming multidrug resistance (MDR). In this work, we reported the structure-based design of triazolo[1,5-a]pyrimidines as new ABCB1 modulators, of which WS-691 significantly increased sensitization of ABCB1-overexpressed SW620/Ad300 cells to paclitaxel (PTX) (IC50 = 22.02 nM). Mechanistic studies indicated that WS-691 significantly increased the intracellular concentration of PTX and [3H]-PTX while decreasing the efflux of [3H]-PTX in SW620/Ad300 cells by inhibiting the efflux function of ABCB1. The cellular thermal shift assay suggested that WS-691 could stabilize ABCB1 by directly binding to ABCB1. WS-691 could stimulate the activity of ABCB1 ATPase but had almost no inhibitory activity against CYP3A4. Importantly, WS-691 increased the sensitivity of SW620/Ad300 cells to PTX in vivo without observed toxicity. Collectively, WS-691(I) is a highly potent and orally active ABCB1 modulator capable of overcoming MDR. The triazolo[1,5-a]pyrimidine may be a promising scaffold for developing more potent ABCB1 modulators.Ethyl 3-oxopentanoate(cas: 4949-44-4Computed Properties of C7H12O3) was used in this study.

Ethyl 3-oxopentanoate(cas: 4949-44-4) belongs to ketone compounds. They are most widely used as solvents, especially in industries manufacturing explosives, lacquers, paints, and textiles. Ketones are also used in tanning, as preservatives, and in hydraulic fluids.Computed Properties of C7H12O3

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

Yan, Guoyi; Zhong, Xinxin; Pu, Chunlan; Yue, Lin; Shan, Huifang; Lan, Suke; Zhou, Meng; Hou, Xueyan; Yang, Jie; Li, Deyu; Fan, Shilong; Li, Rui published their research in Journal of Medicinal Chemistry in 2021. The article was titled 《Targeting Cysteine Located Outside the Active Site: An Effective Strategy for Covalent ALKi Design》.Category: esters-buliding-blocks The article contains the following contents:

Potent inhibitors of ALK are highly desired because of the occurrence of drug resistance. We herein firstly report the development of a rationally designed inhibitor, Con B-1, which can covalently bind to Cys1259, a cysteine located outside the ALK active site by linking a warhead with Ceritinib through a 2,2′-Oxybis(ethylamine) linker. The in vitro and in vivo assays showed ConB-1 is a potent selective ALKi with low toxicity to normal cells. In addition, the mol. showed significant improvement of anticancer activities and potential antidrug resistant activity compared with Ceritinib, demonstrating the covalent inhibitor of ALK can be a promising drug candidate for the treatment of NSCLC. This work may provide a novel perspective on the design of covalent inhibitors. In the experiment, the researchers used N-Boc-1,6-Diaminohexane(cas: 51857-17-1Category: esters-buliding-blocks)

N-Boc-1,6-Diaminohexane(cas: 51857-17-1) can be used as a linear hexyl spacer (C6-spacer) to synthesize biodegradable poly(disulfide amine)s for gene delivery, a multifunctional dendrimer for theranostics and so on.Category: esters-buliding-blocks

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

Huang, Ya-Qing; Huang, Xiong-Zhi; Huang, Pei-Qiang published their research in Journal of Organic Chemistry in 2021. The article was titled 《Synthesis of 5-(1-Alkoxyalkylidene)tetronates by Direct Condensation Reactions of Tetronates with Thionolactones and Thionoesters》.Category: esters-buliding-blocks The article contains the following contents:

We report a two-step approach to bicyclic and monocyclic 5-(1-alkoxyalkylidene)tetronates starting from lactones/esters. The method features the use of thionolactones and thionoesters as activated forms of lactones/esters that allows the direct condensation with tetronates via one-pot enolate formation, nucleophilic addition, S-methylation, and DBU-promoted elimination. The value of the method was demonstrated by the stereoselective syntheses of two natural products: 5,6-Z-fadyenolide (Z/E ratio = 6:1) and 9,10-methylenedioxy-5,6-Z-fadyenolide (Z/E ratio = 9:1). The results came from multiple reactions, including the reaction of Methyl 4-fluorobenzoate(cas: 403-33-8Category: esters-buliding-blocks)

Methyl 4-fluorobenzoate(cas: 403-33-8) is an organic fluorinated building block used for the synthesis of various pharmaceutical compounds. It can be used for the preparation of Blonanserin.Category: esters-buliding-blocks

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

Wang, Dongjie; Xu, Xu; Zhang, Jingyu; Zhao, Yingsheng published their research in Journal of Organic Chemistry in 2021. The article was titled 《Ligand Promoted Olefination of Anilides for Indirectly Introducing Fluorinated Functional Groups via Palladium Catalyst》.Reference of Ethyl oxalyl monochloride The article contains the following contents:

A palladium-catalyzed, ligand promoted, C-H fluorine-containing olefination of anilides with 4-bromo-3,3,4,4-tetrafluorobutene as the fluorinated reagent, which was a potential transformation into other compounds due to its -CF2CF2Br functional group. -CF2CF2H was obtained by using the mild reducing agent sodium borohydride. Bioactive compounds such as aminoglutethimide derivative and propham were well-tolerated in this reaction, both of which highlighted the synthetic importance of this method. In addition to this study using Ethyl oxalyl monochloride, there are many other studies that have used Ethyl oxalyl monochloride(cas: 4755-77-5Reference of Ethyl oxalyl monochloride) was used in this study.

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. In the laboratory, acyl chlorides are generally prepared by treating carboxylic acids with thionyl chloride (SOCl2). The reaction is catalyzed by dimethylformamide and other additives.Reference of Ethyl oxalyl monochloride

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

Naranjo, Steven E.; Hagler, James R.; Byers, John A. published their research in Environmental Entomology in 2021. The article was titled 《Methyl salicylate fails to enhance arthropod predator abundance or predator to pest ratios in cotton》.HPLC of Formula: 119-36-8 The article contains the following contents:

Conservation biol. control is a fundamental tactic in integrated pest management (IPM). Greater biol. control services can be achieved by enhancing agroecosystems to be more favorable to the presence, survival, and growth of natural enemy populations. One approach that has been tested in numerous agricultural systems is the deployment of synthetic chems. that mimic those produced by the plant when under attack by pests. These signals may attract arthropod natural enemies to crop habitats and thus potentially improve biol. control activity locally. A 2-yr field study was conducted in the cotton agroecosystem to evaluate the potential of synthetic Me salicylate (MeSA) to attract native arthropod natural enemies and to enhance biol. control services on two key pests. Slow-release packets of MeSA were deployed in replicated cotton plots season long. The abundance of multiple taxa of natural enemies and two major pests were monitored weekly by several sampling methods. The deployment of MeSA failed to increase natural enemy abundance and pest densities did not decline. Predator to prey ratios, used as a proxy to estimate biol. control function, also largely failed to increase with MeSA deployment. One exception was a season-long increase in the ratio of Orius tristicolor (White) (Hemiptera: Anthocoridae) to Bemisia argentifolii Bellows and Perring (= Bemisia tabaci MEAM1) (Hemiptera: Aleyrodidae) adults within the context of biol. control informed action thresholds. Overall results suggest that MeSA would not likely enhance conservation biol. control by the natural enemy community typical of U.S. western cotton production systems. In addition to this study using Methyl Salicylate, there are many other studies that have used Methyl Salicylate(cas: 119-36-8HPLC of Formula: 119-36-8) was used in this study.

Methyl Salicylate(cas: 119-36-8) has been used: as a component of clarifying solution for treating Mongolian gerbil cochlea intact for immunofluorescence analysis, as a plant elicitor to test its effect on reducing the whitefly population from tomato plants.HPLC of Formula: 119-36-8

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

Chen, Zimin; Yuan, Weiming published their research in Chemistry – A European Journal in 2021. The article was titled 《N-Cyanation of Primary and Secondary Amines with Cyanobenziodoxolone (CBX) Reagent》.Synthetic Route of C12H15ClN2O2 The article contains the following contents:

An efficient electrophilic N-cyanation of amines e.g., pyrrolidine with a stable and less-toxic 1-cyano-1,2-benziodoxol-3-(1H)-one reagent towards the synthesis of cyanamides e.g., Pyrrolidine-1-carbonitrile was disclosed. This synthetically practicable strategy allows the construction of a wide variety of cyanamides under very mild and simple conditions with a broad functional group compatibility, and showcases a huge potential in late-stage modification of complex mols. In addition to this study using H-Trp-OMe.HCl, there are many other studies that have used H-Trp-OMe.HCl(cas: 7524-52-9Synthetic Route of C12H15ClN2O2) was used in this study.

H-Trp-OMe.HCl(cas:7524-52-9) is one of amino acid derivatives. Amino acid derivatives represent an important category of skin penetration promoters. These compounds possess hydrophobic chains attached to an amino acid headgroup via a biodegradable ester bond. Due to the amphiphilic nature of these derivatives, it is possible for them to enter into the SC lipid barrier and significantly disorganize skin membrane lipids.Synthetic Route of C12H15ClN2O2

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

Yi, Xinzeyu; Cao, Zhi; Yuan, Ying; Li, Wen; Cui, Xinyue; Chen, Zilin; Hu, Xiang; Yu, Aixi published their research in Journal of Controlled Release in 2021. The article was titled 《Design and synthesis of a novel mitochondria-targeted osteosarcoma theranostic agent based on a PIM1 kinase inhibitor》.Electric Literature of C11H24N2O2 The article contains the following contents:

Osteosarcoma (OS) is the most common malignancy of the skeletal system, with a poor prognosis and high rate of recurrence. Adequate surgical margin and adjuvant chemotherapy improve the overall survival and limb salvage rate of osteosarcoma patients. Previous studies have showed that OS exhibits an increase in the expression of proviral integration site for Moloney murine leukemia virus 1 (PIM1) kinase, and high levels of PIM1 are also associated with poor OS prognosis and metastasis. We exploited the overexpression of proto-oncogenic PIM1 in OS toward the development of a novel near-IR imaging and targeted therapeutic agent, namely QCAi-Cy7d by conjugating a PIM1 small mol. inhibitor and heptamethine cyanine dye, for simultaneous guiding surgery and chemotherapy. QCAi-Cy7d showed targeted imaging and anticancer activities against OS in vitro and vivo without any obvious toxicity, and its antitumoral activity was much greater than the parent PIMI inhibitor. These results demonstrated the potential of new conjugate of PIM1 inhibitor and near-IR imaging, supporting structure-based design and development of theranostic agents for precise tumor imaging and targeted treatment. The experimental process involved the reaction of N-Boc-1,6-Diaminohexane(cas: 51857-17-1Electric Literature of C11H24N2O2)

N-Boc-1,6-Diaminohexane(cas: 51857-17-1) can be used as a linear hexyl spacer (C6-spacer) to synthesize biodegradable poly(disulfide amine)s for gene delivery, a multifunctional dendrimer for theranostics and so on.Electric Literature of C11H24N2O2

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

Bettoni, Leo; Joly, Nicolas; Lohier, Jean-Francois; Gaillard, Sylvain; Poater, Albert; Renaud, Jean-Luc published their research in Advanced Synthesis & Catalysis in 2021. The article was titled 《Ruthenium-Catalyzed Three-Component Alkylation: A Tandem Approach to the Synthesis of Nonsymmetric N,N-Dialkyl Acyl Hydrazides with Alcohols》.Recommanded Product: Methyl 4-fluorobenzoate The article contains the following contents:

The borrowing hydrogen strategy has been applied in the synthesis of nonsym. N,N-dialkylated acyl hydrazides via a tandem three-component reaction catalyzed by a phosphine free diaminocyclopentadienone ruthenium tricarbonyl complex. This strategy represents the first direct one-pot approach to nonsym. functionalized acyl hydrazides. Different aromatic acyl hydrazides underwent dialkylation with a variety of primary or secondary alcs. and methanol or ethanol as alkylating agents in mild reaction conditions and good yields. Deuterium labeling experiments suggested that the primary or secondary alc. was the hydrogen source in this tandem process. DFT calculations show that the combination of the tandem mixed product cannot be perfectly explained neither structurally nor electronically, but might be dependent of the phys. state of the aldehyde or ketone intermediate (gaz vs. liquid) at the reaction temperatureMethyl 4-fluorobenzoate(cas: 403-33-8Recommanded Product: Methyl 4-fluorobenzoate) was used in this study.

Methyl 4-fluorobenzoate(cas: 403-33-8) is an organic fluorinated building block used for the synthesis of various pharmaceutical compounds. It can be used for the preparation of Blonanserin.Recommanded Product: Methyl 4-fluorobenzoate

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

Kaur, Ravneet; Singh, Dipak; Singh, Ravi P. published their research in Journal of Organic Chemistry in 2021. The article was titled 《Stereoselective Synthesis of Dihydrocoumarins via [1,2]-Phospha-Brook Rearrangement in Three-Component Coupling Reaction of α-Ketoesters, o-Quinone Methides, and Dialkyl Phosphites》.Product Details of 4755-77-5 The article contains the following contents:

A highly regio- and diastereoselective approach for the synthesis of phosphate substituted dihydrocoumarins I (R1 = 4-methoxyphenyl, 2-(4-methylphenyl)ethenyl, 2-phenylethenyl, etc.; R2 = Ph, 3-bromophenyl, 2-thienyl, etc.; R3 = i-Pr, Et, Ph) via Bronsted base catalyzed [1,2]-phospha-Brook rearrangement is reported. The two-step, one-pot Michael addition of α-phosphonyloxy enolates proceeds by coupling of dialkyl phosphite HP(=O)(OR3)2 and α-ketoesters R2C(O)C(O)OEt to o-quinone methides II, followed by an intramol. cyclization, providing 3,4-dihydrocoumarin frameworks I. The results came from multiple reactions, including the reaction of Ethyl oxalyl monochloride(cas: 4755-77-5Product Details of 4755-77-5)

Ethyl oxalyl monochloride(cas: 4755-77-5) belongs to acyl chlorides. In the laboratory, acyl chlorides are generally prepared by treating carboxylic acids with thionyl chloride (SOCl2). The reaction is catalyzed by dimethylformamide and other additives.Product Details of 4755-77-5

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