نتایج جستجو برای: ally aryl ether

تعداد نتایج: 38019  

1998
Thomas F. Woiwode Christoph Rose Thomas J. Wandless

Antimitotic natural products that bind to cellular microtubules can be used as anticancer agents, and we are studying the cellular mechanisms of these compounds.1 The fungal metabolite phomopsin A is a key structure in these studies, and we are currently pursuing its synthesis.2 Our retrosynthetic analysis of phomopsin A targeted the chiral tertiary alkyl-aryl ether as a key disconnection withi...

In this study, methoxylated flavonoids and volatile constitutions of Agrostis gigantea Roth (Poaceae) were investigated for the first time. The flavonoids were identified by spectroscopic methods (1H-NMR, 13C-NMR, COSY, NOSEY, TCOSY, and HMBC). The volatile constitutions of aerial parts and seeds were analyzed by gas chromatography–mass spectrometry (GC-MS). Two methoxylated flavonoids, luteoli...

2005
William Michael Seganish Philip DeShong Ian Mather Steve Rokita

Title of Dissertation: DEVELOPMENT OF ARYL SILOXANE CROSSCOUPLING TECHNOLOGY AND ITS APPLICATION TO THE SYNTHESIS OF COLCHICINE AND ALLOCOLCHICINE DERIVATIVES William Michael Seganish, Doctor of Philosophy, 2005 Dissertation directed by: Professor Philip DeShong Department of Chemistry and Biochemistry One of the most versatile methods for the formation of aryl-aryl bonds is the palladium-catal...

Journal: :Advanced electronic materials 2022

High energy density, high temperature, and low loss dielectric polymers have drawn increasing attention in research owing to their potential applications power electronic pulsed devices. In this study, a new class of organo-soluble dipolar glass (DGPs) are synthesized via polycondensation post-functionalization poly(aryl ether)s (PAEs) based on phenolphthalin. Due the nonplanar backbone structu...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2013
Kentaro Okano

Total syntheses of yatakemycin, PDE-II, dictyodendrins, and heptaphylline are described. This article focuses on the formation of aryl carbon-nitrogen bonds by two methods: first by an aromatic amination reaction using a combination of CuI and CsOAc, and then by a benzyne-mediated one-pot cyclization-functionalization sequence. The aryl amination reaction shows a high functional group compatibi...

Journal: :Life sciences 1976
E F Domino M R Vasko A E Wilson

Morphine and related narcotic agonists produce mixed depressant and/or stimulant effects in a wide variety of animals including man (1,2) . These effects are not only species but also time and dose related . It is not gener ally appreciated that even a single dose of morphine in a given species, such as the rat, may have initial depressant and subsequent stimulant effects. We believe this is an...

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