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The structure (6a) is proposed for the title compound, on the basis of chemical and spectroscopic data. In particular, a combination of one- and two-dimensional n.m.r. techniques has led to this(More)
The structure (9) of the title compound, obtained by treatment of the mother liquor from recrystallization of the naturally occurring acid (6a) with 4-phenyl-1,2,4-triazoline-3,5-dione, has been(More)