Category: ethers-buliding-blocks

Kim, Jae Hyun published the artcileStructure-based modification of pyrazolone derivatives to inhibit mTORC1 by targeting the leucyl-tRNA synthetase-RagD interaction, Product Details of C8H11NO, the publication is Bioorganic Chemistry (2021), 104907, database is CAplus and MEDLINE.

The enzyme leucyl-tRNA synthetase (LRS) and the amino acid leucine regulate the mechanistic target of rapamycin (mTOR) signaling pathway. Leucine-dependent mTORC1 activation depends on GTPase activating protein events mediated by LRS. In a prior study, compound BC-LI-0186 was discovered and shown to interfere with the mTORC1 signaling pathway by inhibiting the LRS-RagD interaction. However, BC-LI-0186 exhibited poor solubility and was metabolized by human liver microsomes. In this study, in silico physicochem. properties and metabolite anal. of BC-LI-0186 are used to investigate the addition of functional groups to improve solubility and microsomal stability. In vitro experiments demonstrated that 7b and 8a had improved chem. properties while still maintaining inhibitory activity against mTORC1. The results suggest a new strategy for the discovery of novel drug candidates and the treatment of diverse mTORC1-related diseases.

Bioorganic Chemistry published new progress about 6850-57-3. 6850-57-3 belongs to ethers-buliding-blocks, auxiliary class Amine,Benzene,Ether, name is (2-Methoxyphenyl)methanamine, and the molecular formula is C8H11NO, Product Details of C8H11NO.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Pandiarajan, Karuppiah published the artcileMultinuclear magnetic resonance spectroscopic and semiempirical molecular orbital (AM1) studies of substituted anisoles, Formula: C10H14O, the publication is Bulletin of the Chemical Society of Japan (1994), 67(10), 2639-46, database is CAplus.

¹³C, ¹⁵N, and ¹⁷O NMR spectra have been recorded for 4-nitroanisole , its 2-methyl-, 2-chloro-, 2-bromo-, 2-iodo-, 2,6-dimethyl-, 2,6-dichloro-, 2,6-dibromo-, and 2,6-diiodo-derivatives, also nitrobenzene , its 3-methyl-, 3-chloro-, 3-bromo-, and 3-iodo-derivatives and 3,5-dichloro- and 3,5-dibromo-derivatives Anal. of the chem. shifts of carbon bearing nitro group and nitro oxygens in these compounds suggests that presence of one substituent ortho- to the methoxyl group enhances its resonance interaction with the benzene ring whereas presence of two ortho-substituents inhibits this resonance. However, in no case the resonance is completely inhibited. The extent of enhancement or inhibition is almost independent of the nature of the ortho-substituent. This conclusion has also been arrived by analyzing the reported chem. shifts of the para-carbons in 2,6-disubstituted and 2-substituted anisoles and the corresponding carbons in m-disubstituted benzenes. Though evidence could not be obtained for steric enhancement of resonance using methoxyl oxygen chem shifts, anal. of these chem. shifts in di-ortho-substituted anisoles and 3,5-dimethylnitrobenzene furnishes evidence for steric inhibition of resonance. However, ¹⁵N chem. shifts are of no use in studying these phenomena. Semiempirical MO calcns using AM1 Hamiltonian suggest that the methoxyl group is coplanar with the benzene ring in anisole, 4-nitroanisole and 2-substituted-4-nitroanisoles but is perpendicular to the benzene ring in 2,6-disubstituted-4-nitroanisoles. Moreover, in 2-substituted-4-nitroanisoles the O-Me group is anti to the 2-substituent.

Bulletin of the Chemical Society of Japan published new progress about 2944-47-0. 2944-47-0 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 2-Isopropylanisole, and the molecular formula is C10H14O, Formula: C10H14O.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Zhang, Xue-wei published the artcileEcotoxicological effects of 50 kinds of fragrance materials on Microcystis aeruginosa, Category: ethers-buliding-blocks, the publication is Zhongguo Huanjing Kexue (2021), 41(3), 1429-1435, database is CAplus.

In the present study, the 50 fragrance materials were performed to determine the ecol. toxicity on Microcystis aeruginosa. The influence of four fragrance materials (2-methoxynaphthalene, thymol, myrcene and indole) on the content of chlorophyll a and soluble protein, superoxide dismutase (SOD) activity, catalase (CAT) activity and malondialdehyde (MDA) content were also studied. The results showed that 2-methoxynaphthalene, thymol, myrcene and indole can significantly inhibit the growth of Microcystis aeruginosa under high concentration exposure, and the half-effect concentration E_yC₅₀ value was 1.81, 1.26, 0.55 and 1.40 mg/L, resp., showing an obvious dose-effect relationship. At a treatment concentration of 1 mg/L, 2-methoxynaphthalene and thymol significantly inhibited the content of chlorophyll a and soluble protein (P<0.0001). Exposure to 2-methoxynaphthalene resulted in a significant decrease in SOD activity (P<0.0001), the other two antioxidant enzymes had no significant effect (P>0.05); Thymol significantly inhibited POD activity (P<0.0001), and myrcene also reduced SOD activity (P<0.01). The activities of POD and CAT of Microcystis aeruginosa treated with indole were significantly lower than those of the control group (P<0.0001). Studies showed that these four fragrance materials inhibited the antioxidant enzyme activity, accumulate excessive MDA, and destroyed the content and function of chlorophyll, which in turn leads to the abnormal growth of algae. 2-methoxynaphthalene, thymol and indole are aromatic compounds, and myrcene was an olefin. The difference in structure of the four fragrance compounds resulted to the different effects on antioxidant enzymes. 2-Methoxynaphthalene was a synthetic fragrance. Although thymol, myrcene and indole were all natural flavors, they were mostly prepared by artificial synthesis. The current findings will enrich the fundamental data for evaluating the risk and toxicity of fragrance materials on the ecosystems. Because of their unique aromatic odor, aromatic compounds have become a large category of fragrance materials and are widely used. However, the aromatic ring is stable and difficult to degrade, so we need to pay more attention to the ecol. safety of the fragrance materials with aromatic ring structure.

Zhongguo Huanjing Kexue published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C25H34N4O2S, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Kaye, Esther G. published the artcileA Green-Absorbing, Red-Fluorescent Phenalenone-Based Photosensitizer as a Theranostic Agent for Photodynamic Therapy, Recommanded Product: 2-Methoxynaphthalene, the publication is ACS Medicinal Chemistry Letters (2021), 12(8), 1295-1301, database is CAplus and MEDLINE.

Phenalenone is a synthetically accessible, highly efficient photosensitizer with a near-unity singlet oxygen quantum yield. Unfortunately, its UV absorption and lack of fluorescence has made it unsuitable for fluorescence-guided photodynamic therapy against cancer. In this work, we synthesized a series of phenalenone derivatives containing electron-donating groups to red-shift the absorption spectrum and bromine(s) to permit good singlet oxygen production via the heavy-atom effect. Of the derivatives synthesized, the phenalenone containing an amine at the 6-position with bromines at the 2- and 5-positions (OE19) exhibited the longest absorption wavelength (i.e., green) and produced both singlet oxygen and red fluorescence efficiently. OE19 induced photocytotoxicity with nanomolar potency in 2D cultured PANC-1 cancer cells as well as light-induced destruction of PANC-1 spheroids with minimal dark toxicity. Overall, OE19 opens up the possibility of employing phenalenone-based photosensitizers as theranostic agents for photodynamic cancer therapy.

ACS Medicinal Chemistry Letters published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C11H10O, Recommanded Product: 2-Methoxynaphthalene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Murai, Motoki published the artcileTotal synthesis and biological evaluation of the antibiotic lysocin E and its enantiomeric, epimeric, and N-demethylated analogues, Name: (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid, the publication is Angewandte Chemie, International Edition (2015), 54(5), 1556-1560, database is CAplus and MEDLINE.

Lysocin E, a macrocyclic peptide, exhibits potent antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) through a novel mechanism. The first total synthesis of lysocin E was achieved by applying a full solid-phase strategy. The developed approach also provides rapid access to the enantiomeric, epimeric, and N-demethylated analogs of lysocin E. Significantly, the antibacterial activity of the unnatural enantiomer was comparable to that of the natural isomer, suggesting the absence of chiral recognition in its mode of action.

Angewandte Chemie, International Edition published new progress about 77128-73-5. 77128-73-5 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid, and the molecular formula is C25H23NO4, Name: (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-3-phenylpropanoic acid.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wilson, Loren C. published the artcileDIPPR Project 851 – Thirty Years of Vapor-Liquid Critical Point Measurements and Experimental Technique Development, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Journal of Chemical & Engineering Data (2018), 63(9), 3408-3417, database is CAplus.

Exptl. determined critical temperatures (T_c) and critical pressures (P_c) are reported for 64 compounds In addition, the critical volume (V_c) has been exptl. determined for 14 of these compounds The compounds in this study are of industrial interest in process design, simulation, and safety. These data also extend our understanding of and ability to predict these properties from group contribution methods.

Journal of Chemical & Engineering Data published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C16H18O4, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Amrutha, S. R. published the artcileControl of π-Stacking for Highly Emissive Poly(p-phenylenevinylene)s: Synthesis and Photoluminescence of New Tricyclodecane Substituted Bulky Poly(p-phenylenevinylene)s and Its Copolymers, Application In Synthesis of 146370-51-6, the publication is Journal of Physical Chemistry B (2006), 110(9), 4083-4091, database is CAplus and MEDLINE.

In the present work, we have demonstrated a facile approach to increase the luminescence of the poly (p-phenylenevinylene)s via controlling the mol. aggregates induced by π-stacking. We have synthesized new bulky tricyclodecane (TCD) substituted PPVs: poly(2-methoxy-5-tricyclodecanemethyleneoxy-1,4-phenylenevinylene) (MTCD-PPV), poly(bis-2,5-tricyclodecanemethyleneoxy-1,4-phenylenevinylene) (BTCD-PPV), and a series of sym. substituted bulky PPV copolymers (P-1-P-7) covering the entire composition range from 0 to 100 mol %. The structures of the monomers and polymers were confirmed by ¹H NMR and FTIR, and the mol. weights were determined by gel permeation chromatog. The composition anal. by NMR revealed that the bulky monomer was highly reactive and the incorporation of bulky units in MEH-PPV increased irresp. of the feed ratio. The polymers possess good solubility, high mol. weights, good thermal stability, and so forth. The mol. weights of the PPV copolymers were also significantly affected by the bulky substitution: the higher the incorporation of bulky units, the lower the mol. weight The absorption and emission studies revealed that there was no influence on the MEH-PPV by TCD substitution in solution whereas in the solid state the photoluminescence intensity of PPV increased more than 10 times. The luminescence increase in PPV was observed throughout the entire bulk and was not confined to any particular domain in the polymer. The bulky PPV copolymers showed that both the luminescence intensity (in film) and quantum yields (in solution) increased with an increase in the extent of BTCD incorporation in the MEH-PPV and attained a maximum for 50% BTCD. The TCD unit has thus proved to be an efficient bulky susbstituent for PPV as it controls the π-stack-induced mol. aggregates in the polymer chains by increasing the interchain distances. The new bulky PPV copolymers are highly soluble, thermally stable, and highly luminescent besides being economically cheap compared to the other materials reported so far for the bulkier approach in π-conjugated materials.

Journal of Physical Chemistry B published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Application In Synthesis of 146370-51-6.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Deepa, P. published the artcilePolyurethane-oligo(phenylenevinylene) random copolymers: π-conjugated pores, vesicles, and nanospheres via solvent-induced self-organization, Name: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2008), 46(17), 5897-5915, database is CAplus.

We report a new series of polyurethane-oligo(phenylenevinylene) (OPV) random copolymers and their self-assembled nanomaterials such as pores, vesicles, and luminescent spheres. The polymers were synthesized through melt transurethane process by reacting a hydroxyl-functionalized OPV with diurethane monomer and diol under solvent-free and nonisocyanate conditions. The amount of OPV was varied up to 50 mol % in the feed to incorporate various amounts of π-conjugated segments in the polyurethane backbone. The π-conjugated segmented polymers were subjected to solvent induced self-organization in THF or THF+water to produce variety of morphologies ranging from pores (500 nm to 1 μm) to spheres (100 nm to 2 μm). Upon shining 370-nm light, the dark solid nanospheres of the copolymers transformed into blue luminescent nanoballs under fluorescence microscope. The mechanistic aspects of the self-organization process were studied using solution FTIR and photophys. techniques such as absorption and emission to trace the factors which control the morphol. FTIR studies revealed that the hydrogen bonding plays a significant role in the copolymers with lower amount of OPV units. Time resolved fluorescent decay measurements of copolymers revealed that mol. aggregation via π-conjugated segments play a major role in the samples with higher OPV content in the random block polymers.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Name: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Hu, Shaojing published the artcileDiastereoselective chloroallylboration of α-chiral aldehydes, Category: ethers-buliding-blocks, the publication is Journal of Organic Chemistry (1998), 63(24), 8843-8849, database is CAplus.

Double asym. reaction of chiral (Z)-(γ-chloroallyl)diisopinocampheylboranes, d-I and l-I, with α-chiral aldehydes (S)-MeCH₂CHMeCHO, N-Boc-L-valinal (II), (R)-2,3-O-isopropylidnene-D-glyceraldehyde, and (R)- and (S)-Me₃CSiMe₂OCH₂CHMeCHO provide a new practical method for the generation of 2,3-syn-3,4-anti and 2,3-syn-3,4-syn chiral vinylchlorohydrins and vinyl epoxides. Both enantiomers d-I and l-I exhibited excellent diastereoselectivity (≥90 de) for matched cases. The mismatched cases yielded moderate to good diastereoselectivity. Thus, l-I was generated in situ from allyl chloride and l-B-methoxydiisopinocampheylborane by treatment with Li dicyclohexylamide and F₃B.OEt₂ in Et₂O/THF and reacted with II at -95° for four hours to give 60% of 99:1 mixture of vinyl chlorohydrins III and IV. Similar reaction of II with d-I gave 61% of a 15:85 mixture of III and IV. Cyclization of III in MeOH containing K₂CO₃ gave 98% vinyloxirane V.

Journal of Organic Chemistry published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Hu, Shaojing published the artcileDiastereo- and Enantioselective Synthesis of syn-α-Vinylchlorohydrins and cis-Vinylepoxides, Formula: C21H37BO, the publication is Journal of Organic Chemistry (1996), 61(21), 7513-7520, database is CAplus and MEDLINE.

A new method to generate chiral syn-vinylchlorohydrins and cis-vinyloxiranes is reported. Reaction of (α-haloallyl)lithiums with methoxy-9-BBN or Ipc₂BOMe followed by treatment with BF₃·OEt₂ leads to (Z)-(γ-haloallyl)boranes which react with aldehydes to yield cis-vinylepoxides (de ≥ 90%) upon oxidative workup. Alternatively, addition of ethanolamine to the allylboration product yields syn-α-halohydrins (de ≥ 90%) that are also easily cyclized to cis-vinylepoxides. Extension of this protocol using [(Z)-γ-chloroallyl]BIpc₂ leads to chiral syn-α-chlorohydrins and cis-vinylepoxides in high de (≥90%) and ee (90-99%). Enantioselectivity of reactions of chiral (Z)-(γ-chloroallyl)boranes with aldehydes are more sensitive to reaction conditions than enantioselectivity of reactions of other α- or γ-substituted allylboranes. The effects of proportion of BF₃·OEt₂ and the relative efficacies of LiNR₂ bases on diastereo- and enantioselectivity of the chloroallylation are reported.

Journal of Organic Chemistry published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, Formula: C21H37BO.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem