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Rapid chromatographic technique for preparative separations with moderate resolution
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Abstract:
(11) Potassium ferricyanide has previously been used to convert w'c-1,2-dicarboxylate groups to double bonds. See, for example, L. F. Fieser and M. J. Haddadln, J. Am. Chem. Soc., 86, 2392 (1964). The oxidative dldecarboxylation of 1,2-dlcarboxyllc acids is, of course, a well-known process. See Inter alia (a) C. A. Grob, M. Ohta, and A. Weiss, Helv. Chim. Acta, 41, 1911 (1958); and (b) E. N. Cain, R. Vukov, and S. Masamune, J. Chem. Soc. D, 98 (1969).read more
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Chemical defense of common antarctic shallow-water nudibranchTritoniella belli eliot (Mollusca: Tritonidae) and its prey,Clavularia frankliniana rouel (Cnidaria: Octocorallia).
James B. McClintock,Bill J. Baker,M. Slattery,John N. Heine,Patrick J. Bryan,W. Yoshida,M. T. Davies-Coleman,D. J. Faulkner +7 more
TL;DR: Evidence is provided for further deterrent capabilities of chimyl alcohol and of its trophic relationship in the polar ecosystem of McMurdo Sound, Antarctica and for the assumption of a humped feeding posture in O. validus.
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NMR-sensitive fluorinated and fluorescent intracellular calcium ion indicators with high dissociation constants.
TL;DR: A new series of high-dissociation constant Ca2+ indicators has been developed to reduce perturbations due to buffering of transients, to carry out measurements in cells and organelles with high basal Ca2- concentrations, and to measure cytosolic Ca 2+ levels in the presence of perturbation that may significantly increase these levels.
Journal ArticleDOI
Novel acid labile COL1 trityl-linked difluoronucleoside immunoconjugates: synthesis, characterization, and biological activity.
Vinod F. Patel,Julie N. Hardin,John M. Mastro,Kevin L. Law,Zimmermann John Lyle,William J. Ehlhardt,Joseph M. Woodland,James J. Starling +7 more
TL;DR: It is suggested that antitumor activity of LY207702 (1) was maintained and its cardiotoxic potential reduced when this agent was administered to human tumor xenograft bearing nude mice as COL1-N6-p-MeT-207702 conjugate 3e.
Journal ArticleDOI
First Efficient Synthesis of Chlorogenic Acid
TL;DR: The first efficient synthesis of chlorogenic acid was achieved in four steps (three purifications) from quinic acid, selectively prepared by a modified kinetic acetalization protocol.
Journal ArticleDOI
Asymmetric induction in acyclic radical reactions: Enantioselective syntheses of α-amino acids via carbon-carbon bond forming radical reactions
TL;DR: The derivative of 8-phenylmenthyl N-Boc-2-bromoglycinate 1 reacted with allyltri-n-butylstannanes via the SH2′ mechanism to give (2S) allyl amino acid drrivatives with high diastereoselectivity as discussed by the authors.