S. Nagumo et al., STUDIES ON THE CONSTITUENTS OF ACERACEAE PLANTS .13. DIARYLHEPTANOIDSAND OTHER PHENOLICS FROM ACER NIKOENSE, Chemical and Pharmaceutical Bulletin, 44(5), 1996, pp. 1086-1089
From a mixture of the bark and twigs of Acer nikoense MAXIM. (Aceracea
e), nine compounds (1-9) were newly isolated. Compound 1 was identical
with acerogenin E, and compounds 8 and 9 were beta-orcinol derivative
s. a Acerogenin K (2), a new diarylheptanoid of the cyclic biphenyl ty
pe, yielded acerogenin E on oxidation. Acerogenins F (3) through L (7)
are new diarylheptanoids of the cyclic diphenyl ether type, whose ske
letons and substituents of the diphenyl ether moieties are the same as
those of acerogenin A. Their structures were elucidated on the basis
of chemical and spectroscopic evidence.