Medicinal Flowers. XXVII. New Flavanone and Chalcone Glycosides, Arenariumosides I, II, III, and IV, and Tumor Necrosis Factor-.ALPHA. Inhibitors from Everlasting, Flowers of Helichrysum arenarium
作者:Toshio Morikawa、Li-Bo Wang、Seikou Nakamura、Kiyofumi Ninomiya、Eri Yokoyama、Hisashi Matsuda、Osamu Muraoka、Li-Jun Wu、Masayuki Yoshikawa
DOI:10.1248/cpb.57.361
日期:——
The methanolic extract from the flowers of Helichrysum arenarium L. MOENCH was found to show inhibitory effect on tumor necrosis factor-α (TNF-α, 1 ng/ml)-induced cytotoxicity in L929 cells. From the methanolic extract, 50 constituents including four new flavanone and chalcone glycosides named arenariumosides I (1), II (2), III (3), and IV (4) were isolated. The stereostructures of 1—4 were elucidated on the basis of chemical and physicochemical evidence. Among the constituents, naringenin 7-O-β-D-glucopyranoside (7), apigenin 7-O-β-D-glucopyranoside (14), apigenin 7-O-gentiobioside (16), and apigenin 7,4′-di-O-β-D-glucopyranoside (17) significantly inhibited TNF-α-induced cytotoxicity in L929 cells at 30 μM.
蜡菊花的甲醇提取物对 L929 细胞中肿瘤坏死因子-α(TNF-α,1 ng/ml)诱导的细胞毒性具有抑制作用。从甲醇提取物中分离出 50 种成分,包括四种新的黄烷酮和查尔酮苷,分别命名为 arenariumosides I (1)、II (2)、III (3) 和 IV (4)。根据化学和物理化学证据阐明了1-4的立体结构。成分中,柚皮素7-O-β-<小>D小>-吡喃葡萄糖苷(7)、芹菜素7-O-β-<小>D小>-吡喃葡萄糖苷(14)、芹菜素7-O -龙胆二糖苷 (16) 和芹菜素 7,4'-二-O-β-<小>D小>-吡喃葡萄糖苷 (17) 在 30 μ<小>M 浓度下可显着抑制 TNF-α 诱导的 L929 细胞细胞毒性小>。