scholarly journals Low-frequency raman spectra of some methyl-substituted components of nucleic acids: 9-methyl derivatives of pyrimidine bases

1991 ◽  
Vol 7 (2) ◽  
pp. 5-8 ◽  
Author(s):  
D. N. Govorun ◽  
Ya. R. Mishchuk ◽  
N. V. Zheltovsky
Keyword(s):  
Nucleic Acids ◽  
Raman Spectra ◽  
Low Frequency ◽  
Pyrimidine Bases ◽  
Methyl Derivatives ◽  
Derivatives Of

Synthesis of N-(2-phosphonylmethoxyethyl) derivatives of heterocyclic bases

1989 ◽  
Vol 54 (8) ◽  
pp. 2190-2210 ◽  
Author(s):  
Antonín Holý ◽  
Ivan Rosenberg ◽  
Hana Dvořáková
Keyword(s):  
Alkali Metal ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Phosphonic Acids ◽  
Pyrimidine Bases ◽  
Methyl Derivatives ◽  
Heterocyclic Bases ◽  
Derivatives Of

The preparation of N-(2-phosphonylmethoxyethyl) derivatives of purine and pyrimidine bases, IV, as analogs of the antiviral 9-(2-phosphonylmethoxyethyl)adenine (PMEA, I), is described. The synthesis consists in alkylation of alkali metal salts of heterocyclic bases or their N- or O-substituted derivatives with diethyl 2-p-toluenesulfonyloxyethoxymethylphosphonate (IIa), 2-chloroethoxymethylphosphonate (IIb) or 2-bromoethoxymethylphosphonate (IIc). The obtained N-(2-diethoxyphosphonylmethoxyethyl) derivatives of heterocyclic bases (III) were treated with bromotrimethylsilane to give phosphonic acids IV. Compounds IV were prepared from pyrimidines (uracil, cytosine and their 5-methyl derivatives), purines (adenine and its N6- and C(2)-substituted derivatives, hypoxanthine, guanine, 6-hydrazinopurine and 6-methylthiopurine etc.) and their analogs (3-deazaadenine etc.).

scholarly journals Low-frequency phonon raman spectra of nucleic acid constituents: pyrimidine bases

1990 ◽  
Vol 6 (3) ◽  
pp. 31-39 ◽  
Author(s):  
D. N. Govorun ◽  
Ya. R. Mishchuk ◽  
N. V. Zheltovsky
Keyword(s):  
Nucleic Acid ◽  
Raman Spectra ◽  
Low Frequency ◽  
Pyrimidine Bases

EFFECTS OF DIETETIC NUCLEIC ACIDS AND COMPONENTS ON GROWTH OF AGRIA AFFINIS (FALLÉN) (DIPTERA: SARCOPHAGIDAE)

1964 ◽  
Vol 42 (5) ◽  
pp. 801-806 ◽  
Author(s):  
H. L. House
Keyword(s):  
Nucleic Acids ◽  
Growth Rates ◽  
Deoxyribonucleic Acid ◽  
Optimal Growth ◽  
Insect Larvae ◽  
Ecological Adaptations ◽  
Adenylic Acid ◽  
Pyrimidine Bases ◽  
Derivatives Of ◽  
Respective Species

Feeding tests on chemically defined diets; showed that dietary nucleic acids are needed for optimal growth rates of the parasitoid Agria affinis (Fallén) reared axenically. Both ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) met this requirement qualitatively and were almost equal quantitatively. The nucleotides adenylic acid, guanylic acid, cytidylic acid, and uridylic acid were the only derivatives of RNA used by the insect larvae to promote growth rates. These nucleotides were equally well utilized regardless of whether their base was purine or pyrimidine. No evidence was found for the utilization of single nucleosides or purine and pyrimidine bases. Phosphorylation of the molecule seemed to be the primary need that decided the utilization of dietary nucleic acid components in this species of Diptera. This augments evidence that various species of Diptera utilize nucleic acids and their derivatives differently. Moreover, it supports an attractive hypothesis of other workers that differences in utilization derive from ecological adaptations of the respective species and more greatly concern the needs for non-essential nutrients than for the essential ones.

Physical Properties of TCNQ Salts with N-Methyl Derivatives of Pyridine

1982 ◽  
Vol 85 (1) ◽  
pp. 257-263 ◽  
Author(s):  
A. Graja ◽  
M. Przybylski ◽  
B. Butka ◽  
R. Swietlik
Keyword(s):  
Physical Properties ◽  
Methyl Derivatives ◽  
Derivatives Of

Methyl derivatives of furan

1974 ◽  
Vol 39 (11) ◽  
pp. 3109-3116 ◽  
Author(s):  
J. Šrogl ◽  
M. Janda ◽  
I. Stibor ◽  
V. Skála ◽  
P. Trška ◽  
...  
Keyword(s):  
Methyl Derivatives ◽  
Derivatives Of
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