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1 H‐NMR‐Untersuchungen an Droso‐ und Isodrosopterin – ein Beitrag zur Strukturaufklärung. Pteridine, LV
Author(s) -
Schlobach Heinrich,
Pfleiderer Wolfgang
Publication year - 1972
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19720550730
Subject(s) - chemistry , geminal , methylene , sulfuric acid , nmr spectra database , methane , pteridine , medicinal chemistry , stereochemistry , spectral line , organic chemistry , physics , astronomy , enzyme
The NMR. spectra of droso‐ and isodrosopterin ( 1 ) in DMSO‐d 6 , 1% DCl/D 2 O solution, CF 3 CO 2 D, and conc. sulfuric acid are discussed in detail. Missing of methine and methyl groups and proof for the presence of three isolated methylene functions of which two show a geminal coupling are consistent with the proposed structure of atropisomeric di(7,8‐dihydropterinyl)‐ methane dye stuffs.