Diarylheptanoids from Myrica arborea

Growth-inhibiting and apoptosis-inducing activities of Myricanol from the bark of Myrica rubra in human lung adenocarcinoma A549 cells

“…Some of these chemicals exhibit anticancer activities (Kuo et al, 2004). Myricanol is a bioactive agent that can be extracted from Myrica bark Tene et al, 2000).…”

Cytotoxic Diarylheptanoids from the Pericarps of Walnuts (Juglans regia)

“…Compound 2 was obtained as colorless needle crystals. Its molecular formula was assigned as C 20 [15], [16]. In the 13 C-NMR spectrum (• " Table 1), the signals for 2 aromatic rings, an oximethine group, 6 aliphatic carbons, and a methoxyl group were observed.…”

“…In the 13 C-NMR spectrum (• " Table 1), the signals for 2 aromatic rings, an oximethine group, 6 aliphatic carbons, and a methoxyl group were observed. Analysis of the 1 H-and 13 C-NMR spectra of compound 2 indicated that it was a cyclic diarylheptanoid, closely related to myricanol (2a) from Myricaceae plants [15], [16], [17]. The major aliphatic chains from C-7 to C-13 were elucidated by the correlations in the 1 (δ H = 3.83, 3H, s) with C-4 (δ C = 148.0) suggested the C-4 methoxyl group.…”

Lignans from the roots of Echinops giganteus

“…Previous studies revealed the presence of sesquiterpenoids from the essential oil of the roots of this plant (Menut et al, 1997;Weyerstahl et al, 1998). In the course of our continuing search for new efficient agents from Cameroonian medicinal plants (Tene et al, 2000), we here present the isolation and structural elucidation of two novel furofuran derivatives, (+)-4-(3-methylbutanoyl)-2,6-di (3,4-dimethoxy)phenyl -3,7-dioxabicyclo[3.3.0] octane (1) and (+)-4-hydroxy-2,6-di (3,4-dimethoxy) phenyl -3,7-dioxabicyclo[3.3.0]octane (2). The known compounds, lupeol (Tane et al, 1995) and sitosteryl b-D D -glucopyranoside (Kojima et al, 1990), were also isolated.…”