Melanogenesis-Inhibitory and Cytotoxic Activities of Diarylheptanoids from Acer nikoense Bark and Their Derivatives
作者:Toshihiro Akihisa、Ayano Takeda、Hiroyuki Akazawa、Takashi Kikuchi、Satoru Yokokawa、Motohiko Ukiya、Makoto Fukatsu、Kensuke Watanabe
DOI:10.1002/cbdv.201200024
日期:2012.8
Nine cyclic diarylheptanoids, 1–9, including two new compounds, i.e., 9‐oxoacerogenin A (8) and 9‐O‐β‐D‐glucopyranosylacerogenin K (9), along with three acyclic diarylheptanoids, 10–12, and four phenolic compounds, 13–16, were isolated from a MeOH extract of the bark of Acer nikoense (Aceraceae). Acid hydrolysis of 9 yielded acerogenin K (17) and D‐glucose. Two of the cyclic diarylheptanoids, acerogenin
九种环状二芳基庚烷类化合物,1-9,包括两种新化合物,即 9-氧代角化菌素 A (8) 和 9-O-β-D-吡喃葡萄糖苷酯生成素 K (9),以及三个非环状二芳基庚烷类化合物,10-12 和四个酚类从 Acer nikoense (Aceraceae) 树皮的甲醇提取物中分离出化合物 13-16。9 的酸水解产生 acerogenin K (17) 和 D-葡萄糖。两种环状二芳基庚烷类化合物,acerogenin A (1) 和 (R)-acerogenin B (5),分别转化为它们的醚和酯衍生物,18-24 和 27-33,以及脱水衍生物,25, 26 , 34, 和 35. 在评估化合物 1-16 和 18-35 对 B16 黑色素瘤细胞黑色素生成的抑制活性时,α-黑色素细胞刺激素 (α-MSH)、八种天然糖苷,即六种二芳基庚烷糖苷,2-4、6、9 和 12,和两种酚苷,15 和