Chemical Constituents from Balanophora harlandii

Eleven compounds were isolated from the inflorescence of Balanophora harlandii Hook.f. On the basis of spectroscopic data, their structures were established as clerosterol (1)、clerosterol-3-O-(6-O-palmitoyl)-β-D-glucopyranoside(2), (-)-lariciresinol(3), (-)-pinoresinol (4),β-amyrin(5), lupeol acetate(6), palmitic acid(7), 1-O-caffeoyl-β-D-glucopyranose(8), 1-O-caffeoyl-(6-O-galloyl)-glucopyranose(9), 1-O-caffeoyl-(4-O-galloyl)-β-D-glucopyranose(10)and gallic acid(11)respectively. Among them, compounds 9 and 10 are first isolated from plants, and 1, 2, 8 and 11 are first obtained in the family Balanophoraceae. The chemical shifts of 1H and 13 C NMR spectra of 3, 4, 8, 9 and 10 were also assigned completely.