New Stilbenoids from Pholidota yunnanensis and Their Inhibitory Effects on Nitric Oxide Production
作者:Xiao-Yu Guo、Jue Wang、Nai-Li Wang、Susumu Kitanaka、Hong-Wei Liu、Xin-Sheng Yao
DOI:10.1248/cpb.54.21
日期:——
Six new stilbenoids, a (bibenzyldihydrophenanthrene) ether designated phoyunnanin D (1), a bis(dihydrophenanthrene) ether designated phoyunnanin E (2), and four stilbenes designated phoyunbene A—D (3—6), were isolated from the air-dried whole plant of Pholidota yunnanensis ROLFE. The new compounds were identified as 7-[2-(3-hydroxyphenethyl)-4-hydroxy-6-methoxyphenoxy]-4-hydroxy-2-methoxy-9,10-dihydrophenanthrene (1), 1-[(9,10-dihydro-4-hydroxy-2-methoxy-7-phenanthrenyl)oxy]-4,7-dihydroxy-2-methoxy-9,10-dihydrophenanthrene (2), trans-3,3′-dihydroxy-2′,4′,5-trimethoxystilbene (3), trans-3,4′-dihydroxy-2′,3′,5-trimethoxystilbene (4), trans-3,3′-dihydroxy-2′,5-dimethoxystilbene (5), and trans-3-hydroxy-2′,3′,5-trimethoxystilbene (6) based on spectroscopic evidence. Furthermore, the inhibitory effects of compounds 1—6 on nitric oxide production in a murine macrophage-like cell line (RAW 264.7) activated by lipopolysaccharide and interferon-γ were examined.
从风干的云南红豆杉(Pholidota yunnanensis ROLFE)全株中分离出六种新的硬脂烯类化合物,一种(双苄基二氢菲)醚,命名为云南红豆杉素 D(1);一种双(二氢菲)醚,命名为云南红豆杉素 E(2);以及四种硬脂烯类化合物,命名为云南红豆杉烯 A-D(3-6)。新化合物被鉴定为 7-[2-(3-羟基苯乙基)-4-羟基-6-甲氧基苯氧基]-4-羟基-2-甲氧基-9,10-二氢菲(1)、1-[(9,10-二氢-4-羟基-2-甲氧基-7-菲基)氧基]-4,7-二羟基-2-甲氧基-9,10-二氢菲(2)、反式-3,3′-二羟基-2′,4′,5-三甲氧基二苯乙烯(3)、反式-3,4′-二羟基-2′,3′,5-三甲氧基二苯乙烯(4)、反式-3、3′-二羟基-2′,5-二甲氧基二苯乙烯(5)和反式-3-羟基-2′,3′,5-三甲氧基二苯乙烯(6)。此外,还研究了化合物 1-6 对脂多糖和干扰素-γ 激活的小鼠巨噬细胞样细胞系(RAW 264.7)产生一氧化氮的抑制作用。