Tag: M.W=150-200

Jugreet, Bibi Sharmeen published the artcileEssential oils from 9 exotic and endemic medicinal plants from Mauritius shows in vitro antibacterial and antibiotic potentiating activities, Computed Properties of 111-11-5, the main research area is Pittosporum myrcene chloramphenicol antibiotic antibacterial agent Pseudomonas infection.

Essential oils (EOs) extracted from botanical resources have greatly been appraised as antimicrobials against a broad spectrum of microorganisms. A panoply of exptl. studies have pointed out the immense potency of EOs as natural antimicrobial agents at relatively low doses; largely attributed to the synergistic interactions of various bioactive components. In the present study, 10 EOs prepared from two endemic Pittosporum senacia Putterl. subsp. Senacia and Syzygium coriaceum J. Bosser & J. Gueho and seven exotic Cinnamomum camphora (L.) Nees & Eberm, Citrus aurantium L., Curcuma longa L, Morinda citrifolia L., Petroselinum crispum (Mill.) Fuss, Plectranthus amboinicus (Lour.) Sprengel and Syzygium samarangense (Blume) Merr. & L. Perry aromatic medicinal plants from Mauritius, were screened for their growth inhibitory activities against eight bacteria (ATCC strains and clin. isolates) using broth microdilution techniques. The EOs were found to possess varying degree of antibacterial potency. The most active EOs were found to have min. inhibitory concentration (MIC) of 0.25-4 mg/mL and min. bactericidal concentration (MBC) of 0.25-16 mg/mL. In particular, at its MIC values, P. amboinicus EO showed bactericidal effects against four strains. However, all tested bacteria were insensitive to P. senecia and C. aurantium fruit peel EOs. Bacillus spizizenii was found to be the most susceptible strain to the active EOs. Addnl., P. amboinicus and the two Syzygium spp. EOs showed antibiotic potentiating activities. Mostly synergistic and partial synergistic actions of the EOs in combination with the conventional antibiotics (streptomycin, chloramphenicol and ciprofloxacin) at a ratio of 1:1 were obtained against the tested bacteria. Thus, results from this study highlighted the antibacterial potential and the efficacy of the most active EOs as antibiotic potentiating agents that could potentially be used in combinational therapies along with conventional antibiotics for a synergistic approach in the treatment/management of clin. relevant bacterial infections.

South African Journal of Botany published new progress about Antibacterial agents. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Computed Properties of 111-11-5.

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

Mamadalieva, Nilufar Z. published the artcileA comparative study on chemical composition and antimicrobial activity of essential oils from three Phlomis species from Uzbekistan, HPLC of Formula: 110-42-9, the main research area is phytochem composition antimicrobial activity essential oil Phlomis species; GC-FID; GC-MS; Lamiaceae; Phlomis; antimicrobial activity; essential oils.

Essential oils obtained from the aerial parts of Phlomis bucharica, P. salicifolia and P. sewerzowii were determined using GC-FID and GC-MS methods. A total of 76 components were identified in the three species representing 97.12, 88.34, and 96.41% of the whole oil, resp. High percentages of thymol (20.41%) and camphor (14.46%) exist in P. bucharica oil. Me palmitate predominates in P. salicifolia oil representing 51.15% whereas thymol (35.76%) is the major constituent in P. sewerzowii essential oil. GC-MS analyses showed that P. bucharica and P. sewerzowii are more closely related comparable to P. salicifolia. The antimicrobial activity of the essential oils was assessed against different microorganisms using agar-disk diffusion and broth microdilution assay. Among the three tested species, the essential oil of P. salicifolia showed the highest antibacterial activity.

Natural Product Research published new progress about Antibacterial agents. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, HPLC of Formula: 110-42-9.

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

Mamadalieva, Nilufar Z. published the artcileA comparative study on chemical composition and antimicrobial activity of essential oils from three Phlomis species from Uzbekistan, Application of Methyl octanoate, the main research area is phytochem composition antimicrobial activity essential oil Phlomis species; GC-FID; GC-MS; Lamiaceae; Phlomis; antimicrobial activity; essential oils.

Essential oils obtained from the aerial parts of Phlomis bucharica, P. salicifolia and P. sewerzowii were determined using GC-FID and GC-MS methods. A total of 76 components were identified in the three species representing 97.12, 88.34, and 96.41% of the whole oil, resp. High percentages of thymol (20.41%) and camphor (14.46%) exist in P. bucharica oil. Me palmitate predominates in P. salicifolia oil representing 51.15% whereas thymol (35.76%) is the major constituent in P. sewerzowii essential oil. GC-MS analyses showed that P. bucharica and P. sewerzowii are more closely related comparable to P. salicifolia. The antimicrobial activity of the essential oils was assessed against different microorganisms using agar-disk diffusion and broth microdilution assay. Among the three tested species, the essential oil of P. salicifolia showed the highest antibacterial activity.

Natural Product Research published new progress about Antibacterial agents. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

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

Ayromlou, Anahita published the artcileChemical composition, antioxidant, antibacterial, and anticancer activities of Scorzonera calyculata Boiss. and Centaurea irritans Wagenitz. Extracts, endemic to Iran, Product Details of C9H18O2, the main research area is Scorzonera calyculata Centaurea irritans extract composition antioxidant antibacterial anticancer.

This research focused on the composition for the essential oils, which was obtained by solvent-free microwave extraction (SFME) from the aerial parts of Scorzonera calyculata, and hydrodistd. oils from the aerial parts and roots of Centaurea irritans, from Astraceae family, were investigated by gas chromatog. (GC) and GC/mass spectrometry (MS). In addition, the biol. activities of the methanolic extracts from the aerial parts of S. calyculata and C. irritans were determined Total phenolic content was determined by the Folin-Ciocalteu procedure. Antibacterial activity of the methanolic extracts was carried out by min. inhibitory concentration (MIC) and min. bactericidal concentration (MBC). Cytotoxicity of the methanolic extract of S. calyculata against human lung cancer cells (A549) and the methanolic extract of C. irritans against breast lung cancer cells (MCF-7) were measured using 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. The obtained results of GC/MS technique showed that the SFME oil of S. calyculata, was rich in regard to nonterpenoid and sesquiterpene components. Both oils from the aerial parts and roots of C. irritans were rich in regard to oxygenated monoterpenes. The S. calyculata and C. irritans extracts showed moderate antioxidant activities with an inhibitory concentration (IC50) value of 1.48 and 1.99 mg/mL, using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay and 73.51 and 44.48μmol Fe (II)/g dry mass using ferric-reducing antioxidant power (FRAP) assay, resp. The extracts showed high toxicity against gram-pos. bacteria and the IC50 value of extracts cytotoxicity was found to be 9.8 and 10.3 mg/mL, resp. It appeared that the investigated samples could be as a promising drug for pharmaceutical industry.

Journal of Reports in Pharmaceutical Sciences published new progress about Antibacterial agents. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Product Details of C9H18O2.

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

Harnying, Wacharee published the artcileN-Heterocyclic Carbene/Carboxylic Acid Co-Catalysis Enables Oxidative Esterification of Demanding Aldehydes/Enals, at Low Catalyst Loading, Recommanded Product: Methyl octanoate, the main research area is ester preparation; aldehyde alc oxidative esterification heterocyclic carbene benzoic acid catalyst; acylation; carbenes; cooperative catalysis; esterification; oxidation.

The discovery that simple carboxylic acids, such as benzoic acid, boost the activity of N-heterocyclic carbene (NHC) catalysts in the oxidative esterification of aldehydes RCHO (R = heptan-3-yl, Ph, 1-[4-(propan-2-yl)phenyl]propan-2-yl, 6-methylhept-5-en-2-yl, etc.) was reported. A simple and efficient protocol for the transformation of a wide range of sterically hindered α- and β-substituted aliphatic aldehydes/enals, catalyzed by a novel and readily accessible N-Mes-/N-2,4,6-trichlorophenyl 1,2,4-triazolium salt, and benzoic acid as co-catalyst, was developed. A whole series of α/β-substituted aliphatic aldehydes/enals hitherto not amenable to NHC-catalyzed esterification could be reacted at typical catalyst loadings of 0.02-1.0 mol%. For benzaldehyde, even 0.005 mol% of NHC catalyst proved sufficient: the lowest value ever achieved in NHC catalysis. Preliminary studies point to carboxylic acid-induced acceleration of acyl transfer from azolium enolate intermediates as the mechanistic basis of the observed effect.

Angewandte Chemie, International Edition published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Harnying, Wacharee published the artcileN-Heterocyclic Carbene/Carboxylic Acid Co-Catalysis Enables Oxidative Esterification of Demanding Aldehydes/Enals, at Low Catalyst Loading, Quality Control of 140-11-4, the main research area is ester preparation; aldehyde alc oxidative esterification heterocyclic carbene benzoic acid catalyst; acylation; carbenes; cooperative catalysis; esterification; oxidation.

The discovery that simple carboxylic acids, such as benzoic acid, boost the activity of N-heterocyclic carbene (NHC) catalysts in the oxidative esterification of aldehydes RCHO (R = heptan-3-yl, Ph, 1-[4-(propan-2-yl)phenyl]propan-2-yl, 6-methylhept-5-en-2-yl, etc.) was reported. A simple and efficient protocol for the transformation of a wide range of sterically hindered α- and β-substituted aliphatic aldehydes/enals, catalyzed by a novel and readily accessible N-Mes-/N-2,4,6-trichlorophenyl 1,2,4-triazolium salt, and benzoic acid as co-catalyst, was developed. A whole series of α/β-substituted aliphatic aldehydes/enals hitherto not amenable to NHC-catalyzed esterification could be reacted at typical catalyst loadings of 0.02-1.0 mol%. For benzaldehyde, even 0.005 mol% of NHC catalyst proved sufficient: the lowest value ever achieved in NHC catalysis. Preliminary studies point to carboxylic acid-induced acceleration of acyl transfer from azolium enolate intermediates as the mechanistic basis of the observed effect.

Angewandte Chemie, International Edition published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Quality Control of 140-11-4.

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

Smeyne, Dylan published the artcileElectrochemical esterification via oxidative coupling of aldehydes and alcohols, Application In Synthesis of 583-04-0, the main research area is aldehyde alc oxidative coupling esterification electrochem.

An electrolytic method for the direct oxidative coupling of aldehydes with alcs. to produce esters is described. This method involves anodic oxidation in presence of TBAF as supporting electrolyte in an undivided electrochem. cell equipped with graphite electrodes. This method successfully couples a wide range of alcs. to benzaldehydes with yields ranging from 70 to 90%. The protocol is easy to perform at a constant voltage conditions and offers a sustainable alternative over conventional methods.

Tetrahedron Letters published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 583-04-0 belongs to class esters-buliding-blocks, name is Allyl benzoate, and the molecular formula is C10H10O2, Application In Synthesis of 583-04-0.

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

Lindroth, Rickard published the artcileHighly efficient direct visible-light-mediated oxidative esterification of aldehydes, Name: Methyl decanoate, the main research area is ester preparation; aldehyde ortho ester oxidative esterification catalyst indium triflate; alc aldehyde oxidative esterification catalyst indium triflate.

A very efficient one-pot procedure for the direct oxidation of aldehydes to esters RC(O)OR1 [R = Ph, cyclohexyl, 4-MeOC6H4, etc.; R1 = Me, Et, t-Bu, etc.] mediated by visible-light was presented. Utilizing a combination of indium triflate and N-bromosuccinimide, NBS, with either ortho-esters or alcs. provided rapid access to a variety of esters RC(O)OR1. Certain substrates convert fully within a few seconds, other more challenging tert-Bu esters RC(O)OR1 [R = 4-PhC6H4; R1 = t-Bu] were formed in good yield after no more than 4 h.

Photochemical & Photobiological Sciences published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Name: Methyl decanoate.

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

Cebular, Klara published the artcile1,3-dibromo-5,5-dimethylhydantoin as a precatalyst for activation of carbonyl functionality, Synthetic Route of 111-11-5, the main research area is carboxylic acid alc dibromo dimethylhydantoin catalyst esterification; ester preparation green chem; aldehyde dibromo dimethylhydantoin catalyst aldol condensation regioselective; enal preparation green chem; 1,3-dibromo-5,5-dimethylhydantoin; alkyl acids; aryl acids; esterification; metal-free catalyst.

An advanced methodol. for the direct esterification of carboxylic acids and alcs., and for aldol condensation of aldehydes using widely available, inexpensive, and metal-free 1,3-dibromo-5,5-dimethylhydantoin under neat reaction conditions was reported. The method is air- and moisture-tolerant, allowing simple synthetic and isolation procedures for both reactions were studied. The reaction pathway for esterification was proposed and a scale-up of certain industrially important derivatives was performed.

Molecules published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Synthetic Route of 111-11-5.

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

Huang, Zijun published the artcileBifunctional ligand enabled selective alkoxycarbonylation of aliphatic alkenes, Quality Control of 123-29-5, the main research area is branched ester preparation regioselective; alkene alc Markovnikov alkoxycarbonylation carbazole derived phosphine ligand catalyst.

Carbazole derived phosphine ligands containing pyridine moiety were designed and prepared It allows the challenging Pd-catalyzed Markovnikov-selective alkoxycarbonylation of aliphatic alkenes to give the branched ester products (28 examples; 51-97% branch selectivity). Preliminary mechanistic studies support that the bridging bromide between Pd and Mn centers is crucial for the enhancement of regioselectivity.

Journal of Catalysis published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Quality Control of 123-29-5.

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