Determination of the absolute configuration of the chiral biaryl system in the streptonigrin antibiotics by exciton coupled circular dichroic spectroscopy
S Tennant, RW Rickards
Index: Tennant, Shaun; Rickards, Rodney W. Tetrahedron, 1997 , vol. 53, # 44 p. 15101 - 15114
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Citation Number: 12
Abstract
The absolute configuration of the chiral phenylpyridyl segment of the Actinomycete antibiotic streptonigrin (1) is defined as R by analysis of the exciton coupled circular dichroic spectra of selected derivatives. The absolute configuration of the co-occurring 10′-O- demethylstreptonigrin (2) is assigned as R by chiroptical correlation with streptonigrin. Circular dichroic spectroscopy indicates that the related phenylpyridone streptonigrone (5) ...
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