(+/-)-Eusiderin E and (+/-)-Eusiderin F, two neolignans, were first synthes
ized from pyrogallol, in which route the Claisen Rearrangement was used to
afford four C6-C3 units 2, 6-dimethoxy-3-allyl-phenol (5), 1-(3, 5-dimethox
y-4-hydroxy-phenol) propene(6), 3-methoxy-5-allyl-1, 2-benzene-diol(9), 1-(
5-methoxy-3, 4-dihydroxy-phenol)propene(10).