The Granulation-Inhibiting Principles from Eucalyptus globulus LABILL. II. The Structures of Euglobal -Ia₁, -Ia₂, -Ib, -Ic, -IIa, -IIb and -IIc

抄録

The structures of seven novel potent granulation-inhibiting principles isolated from the buds of Eucalyptus globulus LABILL., were examined on the basis of physicochemical data, especially of ¹H-nuclear magnetic resonance (NMR), ¹³C-NMR, mass spectrum (MS) and circular dichroism (CD). The structures (but not the complete stereochemistry) of euglobal-Ia₁, -Ia₂, -Ib, -Ic, -IIa, -IIb and -IIc were proposed to be 2-7 and 8, respectively.