Tag: M.W=200-250

Marques, Francisco De A. published the artcileKovats retention indexes of monounsaturated C₁₂, C₁₄, and C₁₆ alcohols, acetates and aldehydes commonly found in lepidopteran pheromone blends, Related Products of esters-buliding-blocks, the publication is Journal of the Brazilian Chemical Society (2000), 11(6), 592-599, database is CAplus.

Many lepidopteran pheromones consist of blends of monounsaturated alcs., aldehydes and acetates. These compounds frequently are obtained in only nanogram quantities from pheromone gland extracts, prohibiting use of most standard spectroscopic methods. However, use of GC retention indexes, particularly in combination with mass spectrometry and electroantennograms, can provide substantial information about trace amounts of unknowns. Comparison of Kovats indexes (KIs) of an unknown with those of standards can provide an unambiguous identification, or at least, limit the number of possible structures to a few compounds Furthermore, because KIs are highly reproducible, a full set of standards is not necessary; comparisons can be made using tables of KIs determined in another laboratory We provide here tables of the KIs of almost all possible isomers of monounsaturated alcs., aldehydes, and acetates with 12, 14, or 16 carbon chain lengths, measured on nonpolar (DB-5) and polar (DB-WAX) stationary phases.

Journal of the Brazilian Chemical Society published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Starratt, A. N. published the artcileMonitoring fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), moth populations in southwestern Ontario with sex pheromone traps, Product Details of C14H26O2, the publication is Canadian Entomologist (1982), 114(7), 545-9, database is CAplus.

Pheromone traps were more efficient than blacklight traps for detecting and monitoring adult populations of fall armyworm (S. frugiperda) in southwestern Ontario. Several dispenser-chem. combinations were strongly attractive but best results were obtained with sticky traps baited with rubber septa impregnated with combinations of (Z)-9-dodecenyl acetate  [16974-11-1] and (Z)-9-tetradecenyl acetate  [16725-53-4].

Canadian Entomologist published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C19H21N3O3S, Product Details of C14H26O2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Dias, Luiz C. published the artcileChiral allylsilane additions to chiral N-Boc-α-amino aldehydes, Quality Control of 106391-88-2, the publication is Synlett (2000), 37-40, database is CAplus.

Addition of chiral allylsilane (S)-Me₃SiCH₂C(:CH₂)CHMeCH₂OCH₂Ph to chiral N-(tert-butoxycarbonyl) α-amino aldehydes in the presence of SnCl₄ in CH₂Cl₂ at -78° affords 1,2-syn homoallylic alcs., potential intermediates for the synthesis of hydroxyethylene peptide isosteres. The diastereoselectivity depends on the aldehyde absolute configuration, with (R)-α-amino aldehydes (matched case/anti-Felkin addition) exhibiting higher stereoselectivity than its enantiomer (mismatched case/Felkin addition).

Synlett published new progress about 106391-88-2. 106391-88-2 belongs to esters-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Aldehyde, name is (R)-tert-Butyl (3-methyl-1-oxobutan-2-yl)carbamate, and the molecular formula is C10H19NO3, Quality Control of 106391-88-2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Nakayama, Yasuhide published the artcileHigh performance gene delivery polymeric vector: Nano-structured cationic star polymers (star vectors), Recommanded Product: Benzyl diethylcarbamodithioate, the publication is Current Drug Delivery (2005), 2(1), 53-57, database is CAplus and MEDLINE.

Nano-structured hyperbranched cationic star polymers, called star vectors, were molecularly designed for a novel gene delivery non-viral vector. The linear and 3, 4 or 6 branched water-soluble cationic polymers, which had same mol. weight of ∼18,000, were synthesized by iniferter (initiator-transfer agent-terminator)-based photo-living-radical polymerization of 3-(N,N-dimethylamino)propyl acrylamide, initiated from resp. multi-dithiocarbamate-derivatized benzenes as an iniferter. All polymers produced polyion complexes ‘polyplexes’ by mixing with pDNA (pGL3-control plasmid), in which the particle size was ∼250 nm in diameter [the charge ratio < 2/1 (vector/pDNA)] and ∼150 nm (the charge ratio > 2.5/1), and the ζ-potential was ∼+10 mV (the charge ratio > 1/1). When COS-1 cells were incubated with the polyplexes 12h after preparation under the charge ratio of 5/1, higher gene expression was obtained as an increase in branching, with a little cytotoxicity. The relative gene expression to the linear polymer was about 2, 5, and 10 times in 3-, 4-, and 6-branched polymers, resp. The precise change in branching of polymers enabled the control of the gene transfer activity.

Current Drug Delivery published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Recommanded Product: Benzyl diethylcarbamodithioate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Trisovic, N. published the artcileMesomorphism of novel stilbene-based bent-core liquid crystals, Formula: C15H14O3, the publication is Liquid Crystals (2021), 48(7), 1054-1064, database is CAplus.

A series of asym. bent-core liquid crystals I (X = COO; Y = H, Cl), bearing the stilbene moiety in the side wing, was synthesized and characterised. Structural modifications of the non-stilbene wing resulted in formation of various mesophases. Compounds I (X = COO; Y = H) and I (X = COO; Y = Cl) with an ester linking group between the Ph rings in this wing have an enantiotropic non-polar smectic-type mesophase, while compound I (Y = H), incorporating the biphenyl moiety, has a ferroelec. SmC_aP_F phase. The mols. of I (Y = H) undergo photoisomerisation in solution under UV irradiation, while the mesophases are unstable and UV irradiation leads to irreversible changes. The mesophases of I (X = COO; Y = H) and I (X = COO; Y = Cl) do not show any electro-optical switching and polarisation current. Applying low frequency AC voltage on a planarly aligned film of compound I (Y = H), smectic domains grow, while the birefringence and an image flickering increase. The observed features of these compounds identify stilbene as an attractive moiety in the design of advanced materials based on bent-core mols.

Liquid Crystals published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C13H19Br2ClN2O, Formula: C15H14O3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lee, Heung Jae published the artcileSurface photograft polymerization on segmented polyurethane using the iniferter technique, Product Details of C12H17NS2, the publication is Journal of Biomedical Materials Research (1999), 47(4), 564-567, database is CAplus and MEDLINE.

A segmented polyurethane (SPU) film was chloromethylated and subsequently dithiocarbamated. The treated films were immersed in solutions containing poly(ethylene glycol) methacrylate (PEGMA) or N,N-dimethylacryl amide (DMAAm) and irradiated with UV light. The resultant surfaces were highly wettable with water. The surface chem. compositions, as determined by XPS, indicated that surface graft polymerization, initiated from surface-derivatized dithiocarbamate, had occurred and had altered the surface properties and the composition of SPU. The platelet adhesion test using platelet-rich plasma showed minimal adhesion for the poly(PEGMA)-grafted surface, followed by the poly(DMAAm)-grafted surface.

Journal of Biomedical Materials Research published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Product Details of C12H17NS2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Doi, Toru published the artcileElucidation of mechanism for living radical polymerization of styrene with N,N-diethyldithiocarbamate derivatives as iniferters by the use of spin trapping technique, Name: Benzyl diethylcarbamodithioate, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (1994), 32(12), 2241-9, database is CAplus.

The photodissociation of several N,N-diethyldithiocarbamate derivatives (RDC), i.e., benzyl, 1-phenylethyl, 2-phenylethyl, Bu, sec-, and tert-Bu N,N-diethyldithiocarbamates, was investigated by the spin trapping technique to elucidate the polymerization mechanism of styrene (I) with RDC as iniferters. The scission of RDC occurred at two different C-S bonds depending on the structure of the alkyl groups of RDC and the cleavage manner was dominated by both resonance and steric effects. RDC generating an N,N-diethyldithiocarbamyl radical acts as an effective iniferter and induces the living radical polymerization of I in homogeneous system. The polymerizations of I with tetraethylthiuram disulfide and p-xylylene bis(N,N-diethyldithiocarbamate) were also discussed on the basis of the results of the spin trapping for RDC as the model compounds of the polystyrene chain ends.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Name: Benzyl diethylcarbamodithioate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Doi, Toru published the artcileRadical polymerization of methyl acrylate by use of benzyl N,N-diethyldithiocrbamate in combination with tetraethylthiuram disulfide as a two-component iniferter, Formula: C12H17NS2, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (1994), 32(15), 2911-18, database is CAplus.

Polymerization of Me acrylate with benzyl N,N-diethyldithiocarbamate (BDC) was carried out in bulk or in benzene under UV irradiation The polymerization proceeded to give high yield of polymer, however it was found that BDC did not function as an iniferter in the MA polymerization Bimol. termination leading to deactivation of the iniferter site was observed during the polymerization in preference to chain transfer and primary radical termination which reproduce the iniferter site. The deactivation was successfully prevented by combining BDC and tetraethylthiuram disulfide as a two-component iniferter. This two-component iniferter system was also applied to synthesis of a star polymer with 1,2,4,5-tetrakis(N,N-diethyldithiocarbamylmethyl)benzene as a tetrafunctional photoiniferter.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Formula: C12H17NS2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Takahashi, Daisuke published the artcileCompound screening identified gossypetin and isoquercitrin as novel inhibitors for amyloid fibril formations of Vλ6 proteins associated with AL amyloidosis, COA of Formula: C10H12O5, the publication is Biochemical and Biophysical Research Communications (2022), 22-28, database is CAplus and MEDLINE.

AL amyloidosis is a life-threatening disease characterized by the deposition of amyloidogenic Ig light chain secreted from clonal plasma cells. Here we established an in-vitro screening system of amyloid inhibition of a variable domain in λ6 light chain mutant (Vλ6), Wil, and screened a food-additive compound library to identify compounds inhibiting the fibril formation. We found gossypetin and isoquercitrin as novel inhibitors. NMR anal. showed that both compounds directly interacted with natively-folded Wil, and proteolysis experiments demonstrated that these compounds conferred proteolytic resistance, suggesting that the compounds enhance the kinetic stability of Wil. Since gossypetin and isoquercitrin specifically interacted with the protein at micromolar concentrations, these compounds could be used as lead to further develop inhibitors against AL amyloidosis.

Biochemical and Biophysical Research Communications published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C15H20O6, COA of Formula: C10H12O5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Otsu, T. published the artcileLiving radical polymerization through the use of iniferters: controlled synthesis of polymers, Recommanded Product: Benzyl diethylcarbamodithioate, the publication is European Polymer Journal (1989), 25(7-8), 643-50, database is CAplus.

Some characteristics of the living radical polymerizations of styrene and Me methacrylate with tetraethylthiuram disulfide, benzyl N,N-diethyldithiocarbamate, p-xylylene bis(N,N-diethyldithiocarbamate), and tetrakis(N,N-diethyldithiocarbamyl)benzene as photoiniferters are described and discussed. Furthermore, the synthesis of block copolymers consisting of controlled structure with these polymeric photoiniferters are described and discussed.

European Polymer Journal published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Recommanded Product: Benzyl diethylcarbamodithioate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics