STRUCTURAL STUDIES BY MASS SPECTROMETRY: DETERMINATION OF THE STRUCTURE OF LYCOFAWCINE (BASE L)

Abstract

The mass spectra of lycofawcine (base L from L. fawcettii) and some of its derivatives are recorded and discussed. On the basis of the interpretation of the mass spectra a structure (IV) is proposed for lycofawcine. Experiments which confirm structure IV are described, and the stereochemistry of lycofawcine is discussed.