ISSN:
0030-4921
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The 13C n.m.r. spectra of a variety of purines and 8-azapurines have been studied in aqueous basic medium; the shifts were measured using dioxane as reference, and corrected to the TMS scale. The compounds studied include adenine, hypoxanthine, 6-mercaptopurine, guanine, xanthine, 8-azaadenine, 8-azahypoxanthine, 8-azaguanine, 8-azaxanthine, and 2-thio-8-azaxanthine. Resonances were assigned using noise-decoupling, selective deuteration at the 8-position of purines, and coupled spectra. The general effect of changing from a purine to its 8-aza analog is to produce a downfield shift of C-2, C-5, and C-6 and an upfield shift of C-4.
Zusätzliches Material:
2 Tab.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/mrc.1270100102
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