Now showing items 51-60 of 757
A novel and efficient synthesis of the naturally occurring nucleoside doridosine
(Elsevier, 1985)
1-Methylisoguanosine was synthesized by a one-pot reaction involving a condensation of 5-amino-1-([beta]--ribofuranosyl)imidazole-4-carboxamide (1) with methyl isothiocyanate, treatment of the resulting thiourea derivative ...
Structure of a water-insoluble -glucan isolated from a streptococcal organism
(Elsevier, 1983-08-16)
The structure of the extracellular polysaccharide (water-insoluble -glucan) from an anaerobic, Gram-positive coccus organism (Streptococcus) has been investigated. Acid hydrolysis of the methylated glucan yielded 2,3,4,6-tetra-, ...
Selective multiple methylene insertion reactions mediated by iodomethylzine iodide: Mechanistic considerations and synthetic applications
(Elsevier, 1991-04-15)
The reaction of alkynylcoppers 1 with an excess of iodomethylzinc iodide selectively furnishes the quadruple methylene insertion copper organometallics 2 in fair to good yields. The mechanism of the reaction has been ...
Characterization of a circular thin film plasma source for atomic emission spectroscopy
(Elsevier, 1985)
A plasma source for analytical atomic emission spectroscopy is described based on the electrical vaporization by capacitive discharge of a thin Ag film deposited on a polycarbonate membrane filter. The source is designed ...
Polyhedral liquid crystal silsesquioxanes
(John Wiley & Sons, Ltd., 1999-04)
Synthetic routes towards monodisperse polyhedral liquid-crystalline silsesquioxanes are described. The liquid-crystalline phase behaviour of these structurally uniform materials, with various silsesquioxane core and mesogenic ...
Existence of a Glassy Layer in the Polymer‐ N anosheet Interface: Evidence from Molecular Dynamics
(Wiley Periodicals, Inc., 2014-01)
Synthesis and Erosion Properties of PEG-Containing Polyanhydrides
(WILEY-VCH Verlag, 2007-05-10)
To tailor the erosion rate of polyanhydrides while retaining their surface erosion characteristics, new three-component polyanhydrides of sebacic acid, 1,3-bis( p -carboxyphenoxy)propane and poly(ethylene glycol) were ...
Fluorescence Yield Near Edge Spectroscopy (FYNES) of benzene adsorbed in Na-Y zeolite
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1990-01)
Benzene adsorbed in sodium-Y zeolite has been investigated using Fluorescence Yield Near Edge Spectroscopy (FYNES). These studies demonstrate that FYNES measurements are feasible as a direct probe of the local electronic ...
A guided tour of the Trans-Proteomic Pipeline
(WILEY-VCH Verlag, 2010-03)
The Trans-Proteomic Pipeline (TPP) is a suite of software tools for the analysis of MS/MS data sets. The tools encompass most of the steps in a proteomic data analysis workflow in a single, integrated software system. ...