Journal ArticleDOI
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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Synthèe, caractérisation et propriétés cytotoxiques des premiers ‘métallocénonucléosides’
TL;DR: The first metallocenonononucleosides containing a metallocenic moiety in their framework were synthesized in the presence of palladium salt in this paper, where only modest activity has been observed.
Journal ArticleDOI
Mechanism of human placental aromatase: A new active site model
Soonsin S. Oh,Cecil H. Robinson +1 more
TL;DR: This picture can account for the known stereochemical consequences at C-19 observed by others using isotopes of hydrogen and oxygen and involves anchoring of the 19-hydroxymethyl and 19-oxo groups at the active site by a glutamate residue.
Journal ArticleDOI
Photoswitchable flexible and shape-persistent dendrimers: comparison of the interplay between a photochromic azobenzene core and dendrimer structure.
TL;DR: Two analogous classes of dendrimers with a single azobenzene moiety at the core have been prepared and a comparison reveals a difference in the properties of the photochromic moiety upon dendritic incorporation as well as a significant change in the photomodulation of dendedrimer properties.
Journal ArticleDOI
The design, synthesis, and evaluation of chromophores for second‐harmonic generation in a polymer waveguide
TL;DR: In this paper, the use of organic polymers with attached optically nonlinear chromophores to form waveguide second-harmonic-generation devices was discussed in particular for optical storage applications.
Journal ArticleDOI
Determination of Fluorescence Yields, Singlet Lifetimes and Singlet Oxygen Yields of Water‐Insoluble Porphyrins and Metalloporphyrins in Organic Solvents and in Aqueous Media
Telmo L. C. Figueiredo,Robert A. W. Johnstone,Alexandra M. P. SantAna Sørensen,D. Burget,Patrice Jacques +4 more
TL;DR: In this paper, a new method was developed for evaluating yields of singlet oxygen formation that also provided a value for the ratio kd/ka in aqueous polymer system.