Abstract
The non-empirical assignment of the absolute configuration of (-)-naringenin, the aglycone of (-)-naringin, a flavanone glycoside abundant in the albedo of immature grapefruits and showing several interesting biological properties, has been approached by two different methods: (a) the exciton analysis of the circular dichroism (CD) spectrum and (b) the ab initio calculation of the optical rotatory power. Both the methods indicate the configurational correlation (-)/(S), as empirically suggested by Gaffield. A comparison of advantages and limitations of the two methods of analysis is also presented.
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