Antiviral activity of polynucleotides: role of the 2'-hydroxyl and a pyrimidine 5-methyl.
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Adenine Nucleotides↗
Biomedical subjects
D Shugar
Publications and source records attributed to D Shugar.
Conformation of nucleosides. II. Dipole moments and conformation of nucleosides.
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Chemical Phenomena↗
O'-Methyl derivatives of arabinosylcytosine.
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Antimetabolites↗
5'-O-methyl derivatives of 1- -D-arabinofuranosylcytosine and 1- -D-arabinofuranosyluracil.
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Arabinose↗
Radio-products of thymine in the presence of ethanol.
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Chromatography, Gas↗
The structure of poly 2'-O-methylcytidylic acid and its complexes with polyinosinic acid.
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Chemical Phenomena↗
5,6-Dihydro-5,6-cyclobutanyluracils and their nucleosides: intermediates in the photochemical dealkylation of 5-propyl- and 5-isopropyl uracils and their nucleosides.
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Alkenes↗
Intermediates in the synthesis of purines and pteridines: selective hydrolysis of chloropyrimidines.
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Chemical Phenomena↗
Effects of ionizing radiations on polyriboadenylic acid and its constituents, and dependence of radiosensitivity on secondary structure.
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Acid-Base Equilibrium↗
Hydrogen bonding scheme involving ribose 2'-hydroxyls in polyribouridylic acid.
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Chemical Phenomena↗
Photochemical transformation of 6-chlorouracil and some alkylated analogues.
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Alkylation↗
Spectral studies on tautomeric forms of inosine.
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Chemical Phenomena↗
A ribonuclease substrate resistant to phosphodiesterase II: 5'-O-benzyluridine-3'-(alpha-naphthylphosphate).
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Acetates↗
Photochemical transformation of 5-alkyluracils and their nucleosides.
Irradiation at 254 nm of aqueous solutions of 5-ethyl-, 5-propyl-, and 5-isopropyluracils (or their nulcleosides) leads to cleavage of the 5-alkyl substituents, via an intramolecular electrocyclic photoaddition intermediate, with formation of uracil (or its nucleoside). The plhotoaddition intermediates represent a new class of dihydropyrimidines, namely analogs of 5,6-dihydro-5,6-cyclobutanyluracil and its nucleosides; the biological significance is discussed.
Alkylation↗
Phosphodiesterase II activity against nucleoside-3' phosphate esters and some 5'-O-substituted analogues; and an improved ribonuclease substrate, a-naphthyl 5'-O-methyluridine-3' phosphate.
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Acylation↗
Cytosine and cytidine analogues: synthesis and properties of 5-ethylcytosine, 5-ethylcytidine and a number of their derivatives.
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Alkylation↗
Role of the 2'-hydroxyl in polynucleotide conformation: poly 2'-O-methyluridylic acid.
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Adenine Nucleotides↗
Studies on the conformation of nucleosides, dinucleoside monophosphates and homopolynucleotides containing uracil or thymine base residues, and ribose, deoxyribose or 2'-O-methylribose.
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Chemical Phenomena↗