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 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.

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

Juglomycins G-J: Isolation from Streptomycetes and Structure Elucidation

2005 ◽  
Vol 60 (2) ◽  
pp. 183-188 ◽  
Author(s):  
R. P. Maskey ◽  
H. Lessmann ◽  
S. Fotso ◽  
I. Grün-Wollny ◽  
H. Lackner ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Absolute Configuration ◽  
Structure Elucidation ◽  
Mass Spectra ◽  
2D Nmr ◽  
Cd Spectra ◽  
Streptomyces Spp ◽  
Nmr Data ◽  
Related Compounds ◽  
Weak Antibacterial Activity

From the Streptomyces spp. 815 and GW4184, four new 4-juglon-2-ylbutyric acid derivatives, the juglomycins G - J (3a, 4a, 4c, 5c), have been isolated and characterised. The structures were derived from the 1D and 2D NMR data and mass spectra and confirmed by comparison with structurally related compounds. The absolute configuration was deduced from the CD spectra. The new natural products exhibited weak antibacterial activity similar to juglomycin A (5a).

The mass spectra of diethylstilbestrol and related compounds

1978 ◽  
Vol 5 (10) ◽  
pp. 582-586 ◽  
Author(s):  
Lewis L. Engel ◽  
Penelope J. Marshall ◽  
James C. Orr ◽  
Vernon N. Reinhold ◽  
Priscilla Carter
Keyword(s):  
Mass Spectra ◽  
Related Compounds

Studies concerning the antibiotic actinonin. Part VII. Mass spectra of actinonin and related compounds

1975 ◽  
pp. 852 ◽  
Author(s):  
Nicholas H. Anderson ◽  
John P. Devlin ◽  
Stephen Jones ◽  
W. David Ollis ◽  
John E. Thorpe
Keyword(s):  
Mass Spectra ◽  
Related Compounds
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