ChemInform Abstract: MASS SPECTRA OF C-NUCLEOSIDES PART 2, AN UNUSUAL FRAGMENTATION REACTION OF THE HETEROCYCLIC MOIETY OF PYRAZOMYCIN AND SOME CLOSELY RELATED COMPOUNDS

1974 ◽  
Vol 5 (14) ◽  
pp. no-no
Author(s):  
P. F. CRAIN ◽  
J. A. MCCLOSKEY ◽  
A. F. LEWIS ◽  
K. H. SCHRAM ◽  
L. B. TOWNSEND
Keyword(s):  
Mass Spectra ◽  
Fragmentation Reaction ◽  
Unusual Fragmentation ◽  
Related Compounds ◽  
Heterocyclic Moiety

scholarly journals Isocyanate und verwandte Verbindungen des trimeren Phosphornitriddifluorids / Isocyanates and Related Compounds of Trimeric Phosphor-difluoronitride

1971 ◽  
Vol 26 (7) ◽  
pp. 679-683 ◽  
Author(s):  
Herbert W. Roesky ◽  
Enno Janssen
Keyword(s):  
Ir Spectra ◽  
Elemental Analysis ◽  
Mass Spectra ◽  
H Nmr ◽  
Carbonic Acids ◽  
Related Compounds

P3N3F5NCO was prepared by reaction of P3N3F5NSO with (COCl) 2. Substituted amides were obtained from the reaction of P3N3F5NSO with carbonic acids e. g. P3N3F5NHCOCH3, P3N3F5NHCOC2H5, and P3N3F5NHCOC3H7. If these substances were treated with PCl5 the following compounds P3N3F5N = CClCH3, P3N3F5N = CClCH5, and P3N3F5TN = CClC3H7 were formed. They reacted with nucleophiles to give P3N3F5N = CNH2CH3, P3N3F5N = TN (CH3) 2C2H5, and P3N3F5N = CN (CH3) 2CH7. The properties of these compounds are described. They were characterized by elemental analysis and IR-spectra. 19F-, 1H-NMR, and mass spectra are reported.

Mass spectra of bithiophthalide and related compounds

1971 ◽  
Vol 8 (2) ◽  
pp. 225-230 ◽  
Author(s):  
Charks W. Koch ◽  
I. Hodge Markgraf
Keyword(s):  
Mass Spectra ◽  
Related Compounds

scholarly journals The Mass Spectra of Sepiomelanin and Related Compounds

1968 ◽  
Vol 89 (6) ◽  
pp. 594-596 ◽  
Author(s):  
Yoshimori OMOTE ◽  
Hiroko YASUDA ◽  
Yoshimori FUJINUMA ◽  
Noboru SUGIYAMA
Keyword(s):  
Mass Spectra ◽  
Related Compounds

Nucleic Acid Related Compounds. 5. The Transformation of Formycin and Tubercidin into 2′- and 3′-Deoxynucleosides

1973 ◽  
Vol 51 (9) ◽  
pp. 1313-1321 ◽  
Author(s):  
Morris J. Robins ◽  
James R. McCarthy Jr. ◽  
Roger A. Jones ◽  
Rudolf Mengel
Keyword(s):  
Nucleic Acid ◽  
Mass Spectra ◽  
Sodium Iodide ◽  
Excess Sodium ◽  
Related Compounds

Reaction of tubercidin (4-amino-7-β-D-ribofuranosylpyrrolo[2,3-d]pyrimidine) (1) with α-acetoxyisobutyryl chloride in the presence of excess sodium iodide in acetonitrile gave an acylated iodo intermediate (2) which was converted into 3′-deoxytubercidin (4) by hydrogenolysis and subsequent saponification.Analogous treatment of formycin (7-amino-3-β-D-ribofuranosylpyrazolo[4,3-d]pyrimidine) (5) gave 3′-deoxyformycin (6) and 2′-deoxyformycin (7) in an approximate ratio of 3:2. These purified nucleosides, 6 and 7 were individually deaminated enzymatically to give 3′-deoxyformycin B (8) and 2′-deoxyformycin B(9).Biological rationale, n.m.r., and mass spectra of these antibiotic-derived deoxynucleosides are discussed.

The mass spectra of the pyrethrins and related compounds

1973 ◽  
Vol 7 (6) ◽  
pp. 719-735 ◽  
Author(s):  
G. Pattenden ◽  
L. Crombie ◽  
P. Hemesley
Keyword(s):  
Mass Spectra ◽  
Related Compounds
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