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
Do Biochemical Exaptations Link Evolution of Plant Defense and Pollination Systems? Historical Hypotheses and Experimental Tests with Dalechampia Vines
W. Scott Armbruster,Jerome J. Howard,Thomas P. Clausen,Edward M. Debevec,John C. Loquvam,Mamoru Matsuki,Bianca Cerendolo,Frank Andel +7 more
TL;DR: Chemical analyses and bioassays support two hypotheses and indicate that, in this system, biochemical exaptations have played a major role in the evolution of plant-insect relationships, adaptations reducing herbivory have affected the evolutionof plant-pollinator relationships, and adaptations for pollination have affectedThe evolution of plants-herbivore relationships.
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Structure-property relationships for the design of polyiminocarbonates.
TL;DR: To identify non-toxic diphenols as monomers for the synthesis of polyiminocarbonates, derivatives of tyrosine dipeptide were systematically explored and desaminotyrosyl-tyrosine hexyl ester was identified as a promising, tyosine-derived diphenol.
Journal ArticleDOI
Photolabile derivatives of bile salts. Synthesis and suitability for photoaffinity labeling.
TL;DR: The suitability of the 7,7-azo derivatives for photoaffinity labeling of bile salt binding proteins was demonstrated by photolyses in 14C-labeled methanol and acetonitrile.
Journal ArticleDOI
Organometallic reagents in synthesis : A new protocol for construction of the indole nucleus
TL;DR: In this article, a large-scale procedure for preparation of monosilylated anilines was also developed, and efficient syntheses of ( + )-cinchonamine and (+ )-epi-catchonamine as well as a tetracyclic model system for the architecturally complex penitrem mycotoxins were completed in regio-and stereoselective fashion.
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Grubbs' catalyst in paraffin: an air-stable preparation for alkene metathesis.
TL;DR: A homogeneous mixture of Grubbs' catalyst in paraffin wax was shown to catalyze three important types of metathesis reactions: ring-closing meetingathesis, alkene dimerization, and alkene cross-metathesis.