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Showing 25 to 36 of 856 entries
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Solanapyrones, Phytotoxins Produced by Alternaria solani: Biosynthesis and Isolation of Minor Components.

Bioscience, biotechnology, and biochemistry

Oikawa H, Yokota T, Sakano C, Suzuki Y, Naya A, Ichihara A.
PMID: 27385452
Biosci Biotechnol Biochem. 1998;62(10):2016-22. doi: 10.1271/bbb.62.2016.

Two minor components of solanapyrones D and E, phytotoxins from Alternaria solani, were isolated. The absolute stereochemistry of D and the optical purity of solanapyrones A and D were determined by chemical transformation and measurement of the CD spectrum....

SF5-Enolates in Ti(IV)-Mediated Aldol Reactions.

The Journal of organic chemistry

Ponomarenko MV, Grabowsky S, Pal R, Röschenthaler GV, Fokin AA.
PMID: 27384450
J Org Chem. 2016 Aug 05;81(15):6783-91. doi: 10.1021/acs.joc.6b00946. Epub 2016 Jul 18.

The F···Ti bonding in the transition structures determines high trans- and syn-diastereoselectivities for aldol reactions of SF5-acetates with aldehydes in the presence of TiCl4 in the non-nucleophilic solvent CH2Cl2. Such bonding is canceled in nucleophilic solvents where opposite cis-stereochemistry...

Fabrication of Size-Tunable Metallic Nanoparticles Using Plasmid DNA as a Biomolecular Reactor.

Nanomaterials (Basel, Switzerland)

Samson J, Piscopo I, Yampolski A, Nahirney P, Parpas A, Aggarwal A, Saleh R, Drain CM.
PMID: 28348280
Nanomaterials (Basel). 2011 Oct 21;1(1):64-78. doi: 10.3390/nano1010064.

Plasmid DNA can be used as a template to yield gold, palladium, silver, and chromium nanoparticles of different sizes based on variations in incubation time at 70 °C with gold phosphine complexes, with the acetates of silver or palladium,...

Substrate specificity of acetyltransferase and reductase enzyme systems used in pheromone biosynthesis by Asian corn borer,Ostrinia furnacalis.

Journal of chemical ecology

Zhao CH, Lu F, Bengtsson M, Löfstedt C.
PMID: 24233679
J Chem Ecol. 1995 Oct;21(10):1495-510. doi: 10.1007/BF02035148.

The substrate specificity of the acetyltransferase and the reductase enzyme systems used byOstrinia furnacalis (Lepidoptera: Pyralidae) in pheromone biosynthesis was studied in vivo by topical application of precursors to pheromone glands. Each of the tetradecenols, varying in double bond...

Palladium-catalyzed α-ketocyclopropanation of norbornenes with propargyl acetates.

The Journal of organic chemistry

Tanioka Y, Tsukada N.
PMID: 24833410
J Org Chem. 2014 Jun 06;79(11):5301-4. doi: 10.1021/jo500357f. Epub 2014 May 23.

Propargyl acetates reacted with norbornene in the presence of a catalytic amount of tetrakis(tripheylphosphine)palladium to give cyclopropyl ketones. The reaction proceeded with high stereoselectivity, affording a single stereoisomer. The reaction of various substituted norbornenes gave the corresponding cyclopropanes in...

A Unique Alkylation of Azobenzenes with Allyl Acetates by Rh(III)-Catalyzed C-H Functionalization.

Organic letters

Deng H, Li H, Wang L.
PMID: 25950499
Org Lett. 2015 May 15;17(10):2450-3. doi: 10.1021/acs.orglett.5b00957. Epub 2015 May 07.

A novel Rh(III)-catalyzed direct alkylation of azobenzenes with allyl acetates through C-H activation and functionalization is demonstrated in which the allyl acetates serve as unique alkylation agents. The rhodium-catalyzed alkylation provides a highly efficient and atom-economic approach to a...

Stereoselective synthesis of (Z,E)-3,5-tetradecadienyl acetate: Sex attractant for carpenterworm moth,Prionoxystus robiniae (Peck) (Lepidoptera: Cossidae) and effect of isomers and monounsaturated acetates on its attractiveness.

Journal of chemical ecology

Doolittle RE, Solomon JD.
PMID: 24306903
J Chem Ecol. 1986 Mar;12(3):619-33. doi: 10.1007/BF01012097.

A new efficient stereoselective synthesis for (Z,E)-3,5-tetradecadienyl acetate (Z3,E5-14∶Ac) a potent male sex attractant for the carpenterworm,Prionoxystus robiniae (Peck), was developed. The effects of the other three isomers (Z,Z; E,Z; E,E) on the field attractiveness of the Z,E isomer...

Attraction of moth species of Tortricidae, Gelechiidae, Geometridae, Drepanidae, Pyralidae, and Gracillariidae families to field traps baited with conjugated dienes.

Journal of chemical ecology

Reed DW, Chisholm MD.
PMID: 24311332
J Chem Ecol. 1985 Dec;11(12):1645-57. doi: 10.1007/BF01012118.

Field surveys of a series of conjugated diunsaturated straight-chain primary alcohols, acetates, and aldehydes (dienes), including the 3,5-dode-cadienyl, 8,10-dodecadienyl, 3,5-tetradecadienyl, 8,10-tetradecadienyl, 9,11-tetradecadienyl, and 10,12-tetradecadienyl primary alcohols, acetates, and most aldehydes, and the related monounsaturated straight-chain primary alcohols, acetates, and...

Sex pheromone candidates with a conjugated triene system: Synthesis and chemical characterization.

Journal of chemical ecology

Ando T, Ohsawa H.
PMID: 24248517
J Chem Ecol. 1993 Jan;19(1):119-32. doi: 10.1007/BF00987477.

Sex pheromone candidates with a conjugated triene system, 8,10,12-, 9,11,13- and 11,13,15-hexadecatrienyl acetates (double bond positional isomers of theGlyphodes pyloalis pheromone, 10,12,14-triene) were synthesized by introducing anE configuration stereospecifically to two of three double bonds and rather nonspecifically to...

Structure-activity relationships in sex attractants for north American noctuid moths.

Journal of chemical ecology

Steck W, Underhill EW, Chisholm MD.
PMID: 24415121
J Chem Ecol. 1982 Apr;8(4):731-54. doi: 10.1007/BF00988315.

Sex attractants known for 145 species of noctuid moths have many common features both as to chemical constituents and to their relationships in blends. The great majority of constituents are straight-chain (Z)-alkenols, -alkenals, or -alkenyl acetates of even carbon...

Manganese/cerium clusters spanning a range of oxidation levels and CeMn(8), Ce(2)Mn(4), and Ce(6)Mn(4) nuclearities: structural, magnetic, and EPR properties.

Inorganic chemistry

Lampropoulos C, Thuijs AE, Mitchell KJ, Abboud KA, Christou G.
PMID: 24999858
Inorg Chem. 2014 Jul 07;53(13):6805-16. doi: 10.1021/ic500617f. Epub 2014 Jun 06.

The syntheses, structures, and magnetic properties are reported for three new Ce/Mn clusters with different Ce/Mn ratios: [Ce6Mn4O12(O2CMe)10(NO3)4(py)4] (py = pyridine) (1), [CeMn8O8(O2CCH2(t)Bu)12(DMF)14] (DMF = dimethylformamide) (2), and [Ce2Mn4O2(O2CMe)6(NO3)4(hmp)4] (3; hmp(-) is the anion of 2-(hydroxymethyl)pyridine). 1 and 2...

Century-known copper salt Cu(OAc)(OMe) proven to be a unique magnetic lattice composed of tetranuclear copper(II) species with a rare binding mode of the acetate anion.

Inorganic chemistry

Koval IA, Gamez P, Roubeau O, Driessen WL, Lutz M, Spek AL, Reedijk J.
PMID: 12562201
Inorg Chem. 2003 Feb 10;42(3):868-72. doi: 10.1021/ic026034k.

The structure, spectroscopy, and magnetism of a century-old copper salt, Cu(OAc)(OMe), is reported. The crystal structure contains two independent Cu(II) ions, which are both five-coordinated and which are bridged by methoxo and acetate anions to form an infinite 2D...

Showing 25 to 36 of 856 entries