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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Journal ArticleDOI
Phase-Switching Depolymerizable Poly(carbamate) Oligomers for Signal Amplification in Quantitative Time-Based Assays
TL;DR: The use of poly(carbamate) oligomers that depolymerize from head-to-tail as phase-switching reagents for increasing the sensitivity of quantitative point-of-care assays that are based on measurements of time.
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Development and Scope of the Arene-Fused Domino Michael/Mannich Reaction: Application to the Total Syntheses of Aspidosperma Alkaloids (−)-Aspidospermidine, (−)-Tabersonine, and (−)-Vincadifformine
Senzhi Zhao,Rodrigo B. Andrade +1 more
TL;DR: The development and application of the arene-fused domino Michael/Mannich route to the tetrahydrocarbazole (ABE) core of Aspidosperma alkaloid core is described and the successful application toward the concise total syntheses of classical indole alkaloids is discussed.
Journal ArticleDOI
Identification of a protein fragment of interleukin 2 responsible for vasopermeability.
TL;DR: The identification of PEP should aid in the discovery of ways to decrease the toxicity of IL-2 and is a promising candidate for the generation of agents that can enhance the delivery of antibodies and drugs to tumors.
Journal ArticleDOI
Aldol‐ und Michael‐Additionen fluorierter Nitroalkane an Aldehyde, Ketone und α,β‐ungesättigte Carbonylverbindungen1,2)
Albert K. Beck,Dieter Seebach +1 more
TL;DR: Aldol and Michael as mentioned in this paper added fluorinated nitroalkanes to aldehydes, ketones, esters, and α,β-unsaturated carbonyl derivatives.
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Ellagitannin Chemistry. Syntheses of Tellimagrandin II and a Dehydrodigalloyl Ether-Containing Dimeric Gallotannin Analogue of Coriariin A.
TL;DR: The first chemical synthesis of the naturally occurring ellagitannin tellimagrandin II is reported, and the synthesis of a novel gallotannin-ellag itannin hybrid is described.