Zobrazeno 11 - 20
of 125
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 10/30/2002, Vol. 124 Issue 43, p12806. 10p. 16 Diagrams.
Publikováno v:
Journal of the American Chemical Society. 137:6219-6225
The C1-C19 building block 46 of halichondrin Bs was synthesized via a selective activation/coupling of β-bromoenone 34 with aldehyde 35 in a Ni/Cr-mediated reaction. The first phase of study was a method development to effect a coupling of a "naked"
Autor:
Klaus Gawrisch, Ivan V. Polozov, Nadukkudy V. Eldho, Scott E. Feller, Stephanie Tristram-Nagle
Publikováno v:
Journal of the American Chemical Society. 125:6409-6421
Insufficient supply to the developing brain of docosahexaenoic acid (22:6n3, DHA), or its omega-3 fatty acid precursors, results in replacement of DHA with docosapentaenoic acid (22:5n6, DPA), an omega-6 fatty acid that is lacking a double bond near
Autor:
David J. Hart, Nabi A. Magomedov
Publikováno v:
Journal of the American Chemical Society. 123:5892-5899
This paper presents a synthesis of ent-alantrypinone (ent-6), the enantiomer of a natural product produced by the fungus Penicillium thymicola. The synthesis revolves around the Li[Me(3)AlSPh]-promoted isomerization of iminobenzoxazine 33 to quinazol
Publikováno v:
Journal of the American Chemical Society. 120:7260-7270
Photolysis of trans-[(cyclam)MnIII(N3)2](ClO4) (1) in methanol at −35 °C with ∼350 nm light produces blue [{trans-[(cyclam)MnV(N)]}2(μ-N3)](ClO4)3·3H2O (2) and dinitrogen (cyclam = 1,4,8,11-tetraazacyclotetradecane). A series of six-coordinate
Autor:
Anne K. Hickey, Daniel J. Mindiola, Jennifer Scott, Maren Pink, Marco G. Crestani, Hongjun Fan, Benjamin F. Wicker
Publikováno v:
Journal of the American Chemical Society. 134(49)
The anilide-methyl complex (PNP)Sc(NH[DIPP])(CH(3)) (1) [PNP(-) = bis(2-diisopropylphosphino-4-tolyl)amide, DIPP = 2,6-diisopropylphenyl] eliminates methane (k(avg) = 5.13 × 10(-4) M(-1) s(-1) at 50 °C) in the presence of pyridine to generate the t
Publikováno v:
Journal of the American Chemical Society. 114:8177-8180
The hydrogen-bonded dimer CH 3 NC...HCl has been isolated in a pulsed jet by keeping the reactive components CH 3 NC and HCl separate until the point at which they expand into the evacuated Fabry-Perot cavity of a pulsed nozzle Fourier-transform micr
Publikováno v:
Journal of the American Chemical Society. 113:7613-7630
A convergent asymmetric synthesis of the polyether antibiotic ferensimycin B has been completed. Chiral enolate bond constructions were employed to establish seven of the 16 stereocenters of the subunits 35 and 52, which comprise the C& and CI&3 port
Autor:
Frederick G. Bordwell, J.-P. Cheng
Publikováno v:
Journal of the American Chemical Society. 113:1736-1743
Oxidation potentials for 35 phenoxide ions and 3 naphthoxide ions have been combined with their pK HA values to estimated homolytic bond dissociation energies (BDEs) for the O-H bonds in phenols. Comparison with literature values shows that there is
Publikováno v:
Journal of the American Chemical Society. 141:10821-10829
High fidelity human mitochondrial DNA polymerase (Pol γ) contains two active sites, a DNA polymerization site (pol) and a 3′−5′ exonuclease site (exo) for proofreading. Although separated by 35 Å, coordination between the pol and exo sites is