Results 61 to 70 of about 64,664 (307)

Alternariol 9-O-methyl ether [PDF]

Acta Crystallographica Section E Structure Reports Online, 2012
The title compound (AME; systematic name: 3,7-dihy-droxy-9-meth-oxy-1-methyl-6H-benzo[c]chromen-6-one), C(15)H(12)O(5), was isolated from an endophytic fungi Alternaria sp., from Catharanthus roseus (common name: Madagascar periwinkle). There is an intramolecular O-H⋯O hydrogen bond in the essentially planar mol-ecule (r.m.s. deviation 0.02 Å).
Brett A. Neilan, Sreekanth Dasari, Mohan Bhadbhade   +2 more
openaire   +3 more sources

Rate constants and Arrhenius parameters for the reactions of OH radicals and Cl atoms with CF3CH2OCHF2, CF3CHClOCHF2 and CF3CH2OCClF2, using the discharge-flow/resonance fluorescence method [PDF]

, 2001
Rate constants have been determined for the reactions of OH radicals and Cl atoms with the three partially halogenated methyl-ethyl ethers, CF\(_3\)CH\(_2\)OCHF\(_2\), CF\(_3\)CHClOCHF\(_2\) and CF\(_3\)CH\(_2\)OCClF\(_2\), using discharge-flow ...
Beach, S. D., Hickson, K. M., Smith, I. W. M., Tuckett, R. P.   +3 more
core   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

Diastereo-divergent synthesis of chiral hindered ethers via a synergistic calcium(II)/gold(I) catalyzed cascade hydration/1,4-addition reaction

Nature Communications
Hindered ethers are ubiquitous in natural products and bioactive molecules. However, developing an efficient method for the stereocontrolled synthesis of all stereoisomers of chiral hindered ethers is highly desirable but challenging.
Xiangfeng Lin, Xia Mu, Hongqiang Cui, Qian Li, Zhaochi Feng, Yan Liu, Guohui Li, Can Li   +7 more
doaj   +1 more source

Methylated Flavonols from Amomum koenigii J.F.Gmel. and Their Antimicrobial and Antioxidant Activities

Biochemistry Research International, 2020
Methylated flavonols form a special group with modulating biological activities in comparison with kaempferol and quercetin. The present study isolated ten compounds including two kaempferol methyl ethers: 5-hydroxy-3,7,4′-trimethoxyflavone (1), 3 ...
Minh Giang Phan, Thi Viet Huong Do, Quoc Binh Nguyen   +2 more
doaj   +1 more source

Alloevodionol methyl ether

Acta Crystallographica Section E Structure Reports Online, 2001
The crystal structure determination of one of the substituted α-chromene components isolated in the hexane extraction of the fruit of the indigenous Australian tree Melicope ellyrana, the methyl ether of the known compound alloevodionol, is reported.
Smith, Graham, Wang, Ertong, Bartley, John, Bott, Raymond   +3 more
openaire   +2 more sources

Triazolinediones as highly enabling synthetic tools [PDF]

, 2016
Triazolinediones (TADs) are unique reagents in organic synthesis that have also found wide applications in different research disciplines, in spite of their somewhat "exotic" reputation.
Billiet, Stijn, Chattopadhyay, Subrata, De Bruycker, Kevin, Du Prez, Filip, Houck, Hannes, Winne, Johan   +5 more
core   +1 more source

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

Final Report on the Safety Assessment of PPG-2 Methyl Ether, PPG-3 Methyl Ether, and PPG-2 Methyl Ether Acetate [PDF]

International Journal of Toxicology, 2009
PPG-2 methyl ether, PPG-3 methyl ether, and PPG-2 methyl ether acetate are used in cosmetics as fragrance ingredients and/or solvents at concentrations of 0.4% to 2%. Propylene glycol ethers are rapidly absorbed and distributed throughout the body when introduced by inhalation or oral exposure, but the inhalation toxicity of PPG-2 methyl ether vapor ...
Valerie, Robinson, Wilma F, Bergfeld, Donald V, Belsito, Curtis D, Klaassen, James G, Marks, Ronald C, Shank, Thomas J, Slaga, Paul W, Snyder, F Alan, Andersen   +8 more
openaire   +2 more sources

Profiling of oligolignols reveals monolignol coupling conditions in lignifying poplar xylem [PDF]

, 2004
A
Morreel, Kris, RALPH, J, KIM, H, LU, FC, Goeminne, Geert, RALPH, S, Messens, Eric, Boerjan, Wout   +7 more
core   +2 more sources