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Full-Text Articles in Physical Sciences and Mathematics
The Synthesis Of Benzyl N-Carbobenzoxy Beta-D-Glucosaminid Uronic Acid Derivatives, Stuart Martin Block
The Synthesis Of Benzyl N-Carbobenzoxy Beta-D-Glucosaminid Uronic Acid Derivatives, Stuart Martin Block
University of the Pacific Theses and Dissertations
The purpose of this research is the preparation and characterization of derivatives of benzyl N-carbobenzoxy-β-D-glucosaminiduronic acid. Previously the derivatives of benzyl N-carbobenzoxy-α-D-glucosaminid-uronic acid have been prepared by H. Weidmann and H. K. Zimmerman (32). The procedure upon which both these uronic acid syntheses is based has been developed with the utilization of platinum in the selective catalytic oxidation of both the benzyl α- and β-D-glucuronosides. The applicability of this research is in the development of new intermediates for the preparation of new diamino sugars or other natural products.
Synthesis Of Benzyl Beta D-Gulopyranosiduronic Acid-(2',3': 4,5)-Oxazolidone-2, Gerald Duane Shryock
Synthesis Of Benzyl Beta D-Gulopyranosiduronic Acid-(2',3': 4,5)-Oxazolidone-2, Gerald Duane Shryock
University of the Pacific Theses and Dissertations
Although D-glucosamine has been found as a constituent of some antibiotics (28), very little research has been carried out in the area of synthetic preparations. Dutcher (7) recently reviewed the biochemical importance of this class of amino sugars as a constituent of complex antibiotic substances which compose the streptothricin family. For a complete elucidation of these antibiotics, it becomes necessary to investigate thoroughly the synthesis and reactions of the D-glucosamine compounds. Gross et al. (12) have succeeded in preparing the oxazolidone of α-D-glucosamine as well as some derivatives (13) of this compound. The present work reports an attempt to prepare …
Capillary Behavior Of Viscous Liquids, Marvin De Young
Capillary Behavior Of Viscous Liquids, Marvin De Young
University of the Pacific Theses and Dissertations
A major problem confronting every investigator who works with synthetic organic chemistry is that of the crystallization of the products obtained. This problem necessitates extensive attention both on the experimental and on the theoretical level. In order to gain an understanding of the behavior of substances in the liquid state, so as to be better able to manipulate them in procedures intended to induce crystallization from complex mixtures, considerable attention has been given to various models of the liquid state. An understanding of the nature of pure liquids would seem to be an essential prelude to any attempt to understand …