Month: October 2022

In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Kunkalkar, Rupesh A.; Fernandes, Rodney A.. Electric Literature of C5H6O2. The article was titled 《Lewis acid-catalyzed annulative partial dimerization of 3-aryloxyacrylates to 4-arylchroman-2-ones: synthesis of analogues of tolterodine, RORγ inhibitors and a GPR40 agonist》. The information in the text is summarized as follows:

A beguiling annulative partial dimerization of 3-aryloxyacrylates to 4-arylchroman-2-ones e.g. I catalyzed by Lewis acid (BF3·OEt2) has been developed. The reaction involves two mols. of 3-aryloxyacrylate, resulting in the loss of one propiolate mol. to furnish 4-arylchroman-2-one, an important structural motif found in many natural products. This methodol. has been elaborated to synthesize analogs of tolterodine, RORγ inhibitors and a GPR40 agonist.Ethyl propiolate(cas: 623-47-2Electric Literature of C5H6O2) was used in this study.

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Electric Literature of C5H6O2

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

In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Chakraborty, Poulami; Dastidar, Parthasarathi. Reference of Methyl Salicylate. The article was titled 《An easy access to topical gels of an anti-cancer prodrug (5-fluorouracil acetic acid) for self-drug-delivery applications》. The information in the text is summarized as follows:

An easy access to topical gels (both hydro- and organogels) derived from an anti-cancer prodrug namely 5-fluorouracil acetic acid (5-FuA) achieved by exploiting a simple salt formation strategy is reported for the first time. Nearly 85% of the salts synthesized were gelators. Single crystal structures of some of the gelator salts revealed an intriguing hydrogen bonding network including double stranded 1D chains stabilized through uracil-uracil complementary interactions and the crystal structures of the gelator salts corroborated well with the hypothesis based on which the gelators were designed. Studies indicated that both the hydrogel and the Me salicylate gel of the gelator salt FuA-15 were suitable for self-drug-delivery application. In the experimental materials used by the author, we found Methyl Salicylate(cas: 119-36-8Reference of Methyl Salicylate)

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.Reference of Methyl Salicylate

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

Formula: C6H10O3On November 30, 2020 ,《Antidiabetic Activity of Dihydropyrimidine Scaffolds and Structural Insight by Single Crystal X-ray Studies》 appeared in Medicinal Chemistry (Sharjah, United Arab Emirates). The author of the article were Bairagi, Keshab M.; Younis, Nancy S.; Emeka, Promise M.; Sangtani, Ekta; Gonnade, Rajesh G.; Venugopala, Katharigatta N.; Alwassil, Osama I.; Khalil, Hany E.; Nayak, Susanta K.. The article conveys some information:

This research project is designed to identify the anti-diabetic effects of the newly synthesized compounds to conclude the perspective of consuming one or more of these new synthetic compounds for diabetes management. A series of dihydropyrimidine (DHPM) derivative bearing electron releasing and electron-withdrawing substituent′s on Ph ring (a-j) were synthesized and screened for antihyperglycemic(anti-diabetic) activity on streptozotocin (STZ) induced diabetic rat model. The newly synthesized compounds were characterized by using FT-IR, m.p., 1H and 13C NMR anal. The crystal structure and supramol. features were analyzed through single-crystal X-ray study. Anti-diabetic activity testing of newly prepared DHPM scaffolds was mainly based on their relative substituent on the Ph ring along with urea and thiourea. Among the synthesized DHPM scaffold, the test compound c having chlorine group on Ph ring at the ortho position to the hydropyrimidine ring with urea and Me acetoacetate derivative shows moderate lowering of glucose level. However, the title compounds Me 4-(4-hydroxy-3-methoxyphenyl)- 6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate(g) and Et 4-(3-ethoxy-4- hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate(h) having methoxy and ethoxy substituents on Ph ring show significant hypoglycemic activity compared to the remaining compounds from the Scheme 1. The exptl. rat models for the study were divided into 13 groups (n = 10); group 1 animals were treated with 0.5% CMC (0.5mL) (vehicle); group 2 were considered the streptozotocin (STZ)/nicotinamide diabetic control group (DC) and untreated, group 3 diabetic animals were administered with gliclazide 50 mg/kg and act as a reference drug group. The remaining groups of the diabetic animals were administered with the newly synthesized dihydropyrimidine compounds in a single dose of 50 mg/kg orally using the oral gavage, daily for 7 days continuously. The blood glucose level was measured before and 72 h after nicotinamide-STZ injection, for confirmation of hyperglycemia and type 2 diabetes development. Blood glucose levels were significantly (p<0.05) reduced after treatment with these derivatives The mean percentage reduction for gliclazide was 50%, while that of synthesized compounds were approx. 36%. Our result suggests that the synthesized new DHPM derivative containing alkoxy group on the Ph ring shows a significant lowering of glucose level compared to other derivatives In the experiment, the researchers used many compounds, for example, Methyl 3-oxovalerate(cas: 30414-53-0Formula: C6H10O3)

Methyl 3-oxovalerate(cas: 30414-53-0) belongs to ketone compounds. Ketone compounds have important physiological properties. They are found in several sugars and in compounds for medicinal use, including natural and synthetic steroid hormones. Molecules of the anti-inflammatory agent cortisone contain three ketone groups.Formula: C6H10O3

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

In 2004,Andrews, Stephen P.; Joensson, Daniel; Warrington, Brian H.; Ladlow, Mark published 《Automated parallel, multi-step polymer-assisted solution phase (PASP) synthesis of substituted benzimidazole derivatives》.Combinatorial Chemistry and High Throughput Screening published the findings.Reference of Methyl 4-fluoro-3-nitrobenzoate The information in the text is summarized as follows:

The automated polymer-assisted solution phase (PASP) synthesis of a 72 member library of 1-R1-2-R2S-5-R3C(O)benzimidazoles (e.g. 2-(benzylthio)-1-sec-butyl-5-(cyclopentylcarbamoyl)benzimidazole) and 1-R1-3-R2-5-R3C(O)benzimidazol-2(3H)-ones (e.g. 3-benzyl-1-sec-butyl-5-(cyclopentylcarbamoyl)-1H-benzimidazol-2(3H)-one) using com. available robotic workstations is described. By incorporating both automated aqueous work-ups, in-line scavenging and catch and release protocols the desired compounds were obtained directly in good yields and excellent purities without the need for conventional chromatog. purification The synthesis described demonstrates how both manual and automated equipment may be used together to provide a versatile approach that facilitates parallel compound synthesis. In addition to this study using Methyl 4-fluoro-3-nitrobenzoate, there are many other studies that have used Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Reference of Methyl 4-fluoro-3-nitrobenzoate) was used in this study.

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.Reference of Methyl 4-fluoro-3-nitrobenzoateMethyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

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

In 2013,Schofield, Joseph; Brasseur, Denis; Bruin, Beatrice; Vassal, Thierry; Klieber, Sylvie; Arabeyre, Catherine; Bourrie, Martine; Sadoun, Freddy; Fabre, Gerard published 《Effect of deuteration on the metabolism and clearance of some pharmacologically active compounds-synthesis and in vitro metabolism of deuterated derivatives of dronedarone》.Journal of Labelled Compounds and Radiopharmaceuticals published the findings.Recommanded Product: 6149-41-3 The information in the text is summarized as follows:

The synthesis and in vitro metabolism studies of a family of specifically deuterated derivatives of dronedarone (I) are described. Metabolic stability and clearance of the parent compound are not sensitive to deuterium substitution, irresp. of the position of the heavy label. The results came from multiple reactions, including the reaction of Methyl 3-hydroxypropanoate(cas: 6149-41-3Recommanded Product: 6149-41-3)

Methyl 3-hydroxypropanoate(cas: 6149-41-3) belongs to esters with low molecular weight are commonly used as fragrances and found in essential oils and pheromones. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Recommanded Product: 6149-41-3

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

In 2016,Selvaraju, Manikandan; Ye, Tzuen-Yang; Li, Chia-Hsin; Ho, Pei-Heng; Sun, Chung-Ming published 《Copper catalyzed aerobic oxidative cyclization and ketonization: one pot synthesis of benzoimidazo[1,2-a]imidazolones》.Chemical Communications (Cambridge, United Kingdom) published the findings.Recommanded Product: Methyl 4-fluoro-3-nitrobenzoate The information in the text is summarized as follows:

A highly efficient synthesis of benzoimidazo[1,2-a]imidazolone I [R1 = 6-CH3, 6-C(O)OCH3, 7-Cl, etc.; R2 = CH(CH3)2, cyclopentyl, 2-(thiophen-2-yl)ethyl, etc.; R3 = Ph, naphthalen-2-yl, 1-methyl-1H-pyrrol-2-yl, etc.; R4 = 4-H3CC6H4, biphen-4-yl, 2-pyridyl, etc.] through a novel oxidative 5-exo-dig cyclization-ketonization cascade of 2-aminobenzimidazole II [R1 = 5-CH3, 5-C(O)OCH3, 6-Cl, etc.], aldehyde R3CHO and terminal alkyne R4CCH has been explored under aerobic conditions. The reaction proceeds through copper-catalyzed addition of terminal alkynes to imines derived from 2-aminobenzimidazole with aldehyde followed by intramol. cyclization. The atm. mol. oxygen acts as an oxygen source for the newly formed carbonyl group in the final product I. In the experiment, the researchers used Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9Recommanded Product: Methyl 4-fluoro-3-nitrobenzoate)

Methyl 4-fluoro-3-nitrobenzoate(cas: 329-59-9) belongs to methyl benzoate. Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid to give methyl 3-nitrobenzoate.Recommanded Product: Methyl 4-fluoro-3-nitrobenzoateMethyl 4-fluoro-3-nitrobenzoate is used to prepare dimethyl 3-nitro-3′,4-oxydibenzoate by reacting with 3-hydroxy-benzoic acid methyl ester.

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

《Synthesis, structural characterization, photophysical study and investigation as fluorescent sensor towards metal ions of 1,2,3-triazole-azaindene hybrids》 was written by Sacarescu, Liviu; Dascalu, Mihaela; Chibac-Scutaru, Andreea-Laura; Roman, Gheorghe. Product Details of 623-47-2This research focused ontriazole azaindene metal ion detection optical structural property. The article conveys some information:

The effect of conjugation between 1,2,3-triazole ring system and azaindene scaffolds (either indolizine or imidazo[1,2-a]pyridine) on fluorescence has been examd Three novel 1,2,3-triazole-indolizine hybrids have been prepared either through the Chichibabin indolizine formation or using 1,3-dipolar cycloaddition of activated alkynes to a pyridinium N-ylide, while a structurally related 1,2,3-triazole-substituted imidazo[1,2-a]pyridine was obtained via the Chichibabin reaction. The structures of two of the 1,2,3-triazole-indolizine hybrids have been established by single crystal X-ray diffraction. All novel compounds were investigated using UV-vis spectroscopy. Comparison between the fluorescence of 1,2,3-triazole-azaindenes and the fluorescence of analogous azaindenes that lack the 1,2,3-triazole moiety has shown a twofold amplification of fluorescence as a result of incorporation of the 1,2,3-triazole ring system in the structure of the novel hybrids. The 1,2,3-triazole-susbstituted imidazo[1,2-a]pyridine exhibited a stronger fluorescence emission than related 1,2,3-triazole-indolizine hybrids, therefore the former compd sensing ability against metal ions was evaluated. The 1,2,3-triazole-substituted imidazo[1,2-a]pyridine showed selective detection towards Hg2+ and UO2+2 with similar detection limits of approx. 4.5 x 10-5 M. In the experiment, the researchers used Ethyl propiolate(cas: 623-47-2Product Details of 623-47-2)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Product Details of 623-47-2

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

Vinogradov, Andrei S.; Krasnov, Vyacheslav I.; Platonov, Vyacheslav E. published their research in Collection of Czechoslovak Chemical Communications on December 31 ,2008. The article was titled 《Reactions of polyfluoroaromatic organozinc compounds with acyl chlorides and DMF》.Synthetic Route of C9H5F5O2 The article contains the following contents:

N,N-Dimethylbis(polyfluoroaryl)methanamines R2CHNMe2 (R = C6F5, EtO2CC6F4, NCC6F4, etc.) and polyfluoroarenes RH were obtained from polyfluoroarom. organozinc compounds RZnX (X = Cl, R) in DMF in the presence of acyl chlorides. In addition to this study using Ethyl 2,3,4,5,6-pentafluorobenzoate, there are many other studies that have used Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4Synthetic Route of C9H5F5O2) was used in this study.

Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Synthetic Route of C9H5F5O2 They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market.

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

In 2022,Fuentes-Aguilar, Alma; Merino-Montiel, Penelope; Montiel-Smith, Sara; Meza-Reyes, Socorro; Vega-Baez, Jose Luis; Puerta, Adrian; Fernandes, Miguel X.; Padron, Jose M.; Petreni, Andrea; Nocentini, Alessio; Supuran, Claudiu T.; Lopez, Oscar; Fernandez-Bolanos, Jose G. published an article in Journal of Enzyme Inhibition and Medicinal Chemistry. The title of the article was 《2-Aminobenzoxazole-appended coumarins as potent and selective inhibitors of tumour-associated carbonic anhydrases》.COA of Formula: C7H12O3 The author mentioned the following in the article:

We have carried out the design, synthesis, and evaluation of a small library of 2-aminobenzoxazole-appended coumarins as novel inhibitors of tumor-related CAs IX and XII. Substituents on C-3 and/or C-4 positions of the coumarin scaffold, and on the benzoxazole moiety, together with the length of the linker connecting both units were modified to obtain useful structure-activity relationships. CA inhibition studies revealed a good selectivity towards tumor-associated CAs IX and XII (Ki within the mid-nanomolar range in most of the cases) in comparison with CAs I, II, IV, and VII (Ki > 10 μM); CA IX was found to be slightly more sensitive towards structural changes. Docking calculations suggested that the coumarin scaffold might act as a prodrug, binding to the CAs in its hydrolyzed form, which is in turn obtained due to the esterase activity of CAs. An increase of the tether length and of the substituents steric hindrance was found to be detrimental to in vitro antiproliferative activities. Incorporation of a chlorine atom on C-3 of the coumarin moiety achieved the strongest antiproliferative agent, with activities within the low micromolar range for the panel of tumor cell lines tested. In the experiment, the researchers used Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3COA of Formula: C7H12O3)

Ethyl 2-methyl-3-oxobutanoate(cas: 609-14-3) belongs to ketone compounds. Ketones are highly reactive, although less so than aldehydes, to which they are closely related. Much of their chemical activity results from the nature of the carbonyl group. Ketones readily undergo a wide variety of chemical reactions.COA of Formula: C7H12O3

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

COA of Formula: C5H11NO2In 2022 ,《Algorithm for the Pruning of Synthesis Graphs》 was published in Journal of Chemical Information and Modeling. The article was written by Zahoranszky-Kohalmi, Gergely; Lysov, Nikita; Vorontcov, Ilia; Wang, Jeffrey; Soundararajan, Jeyaraman; Metaxotos, Dimitrios; Mathew, Biju; Sarosh, Rafat; Michael, Samuel G.; Godfrey, Alexander G.. The article contains the following contents:

Synthesis route planning is in the core of chem. intelligence that will power the autonomous chem. platforms. In this task we rely on algorithms to generate possible synthesis routes with the help of retro- and forward-synthetic approaches. Generated synthesis routes can be merged into a synthesis graph which represents theor. pathways to the target mol. However, it is often required to modify a synthesis graph due to typical constraints. These constraints might include “”undesirable substances””, e.g., an intermediate that the chemist does not favor, or substances that might be toxic. Consequently, we need to prune the synthesis graph by the elimination of such undesirable substances. Synthesis graphs can be represented as directed (not necessarily acyclic) bipartite graphs, and the pruning of such graphs in the light of a set of undesirable substances has been an open question. In this study, we present the Synthesis Graph Pruning (SGP) algorithm that addresses this question. The input to the SGP algorithm is a synthesis graph, and a set of undesirable substances. Furthermore, information for substances is provided as metadata regarding their availability from inventory. The SGP algorithm operates with a simple local rule set, in order to determine which nodes and edges need to be eliminated from the synthesis graph. In this study, we present the SGP algorithm in details and provide several case studies that demonstrate the operation of the SGP algorithm. We believe that the SGP algorithm will be an essential component of computer aided synthesis planning. After reading the article, we found that the author used tert-Butyl carbamate(cas: 4248-19-5COA of Formula: C5H11NO2)

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).COA of Formula: C5H11NO2

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