A New Diarylheptanoid Glycoside from the Stem Bark of Alnus hirsuta and Protective Effects of Diarylheptanoid Derivatives in Human HepG2 Cells
作者:Daae Park、Hyoung Ja Kim、Seo Yun Jung、Chang-Soo Yook、Changbae Jin、Yong Sup Lee
DOI:10.1248/cpb.58.238
日期:——
To search for secondary metabolites of Alnus hirsuta (Betulaceae), various chromatographic separations of the ethyl acetate soluble fraction of the stem bark of A. hirsuta led to the isolation of a new diarylheptanoid glycoside, (3R)-1,7-bis-(4-dihydroxyphenyl)-3-heptanol 3-O-β-D-glucopyranosyl(1→3)-β-D-xylopyranoside (13) and twelve diarylheptanoid derivatives, namely, oregonin (1), rubranoside A (2), hirsutanonol 5-O-β-D-glucopyranoside (3), rubranoside B (4), rubranoside C (5), hirsutanonol (6), hirsutenone (7), (5S)-O-methylhirsutanonol (8), platyphylloside (9), platyphyllonol 5-O-β-D-xylopyranoside (10), aceroside VII (11) and platyphyllenone (12). Isolates were assessed for their hepatoprotective effects against tert-butylhydroperoxide (t-BHP)-induced toxicity in HepG2 cells. Of these isolates, compounds 1—8 showed significant hepatoprotective effects on t-BHP-induced damage to HepG2 cells, with 8 exhibiting the greatest protective effect (50.7±3.7% at a concentration of 10 μM).
为了寻找桤木属植物糙皮桤木的次生代谢产物,对糙皮桤木树皮乙酸乙酯可溶部分的多种色谱分离法导致了新二芳基庚烷糖苷(3R)-1,7-双(4-二羟基苯基)-3-庚醇3-O-β-D-吡喃葡糖基(1→3)-β-D-吡喃木糖苷(13)和十二个二芳基庚烷衍生物的分离,其中,分别为oregin(1)、rubranoside A(2)、hirsutanonol 5-O-β-D-吡喃葡糖苷(3)、rubranoside B(4)、rubranoside C(5)、hirsutanonol(6)、hirsutenone(7)、(5S)-O-甲基hirsutanonol(8)、platyphylloside(9)、platyphyllonol 5-O-β-D-吡喃木糖苷(10)、aceroside VII(11)和platyphyllenone(12)。分离的化合物通过评估 HepG2 细胞中对抗叔丁基过氧化氢(t-BHP)诱导的毒性来测试其肝保护作用。在这些分离的化合物中,化合物1—8对t-BHP诱导的HepG2细胞损伤有显著的保护作用,其中8的保护效果最好,在10 μM浓度下的保护效果为50.7±3.7%。