Phytochemistry 2006-12-01

5-O-glucosyldihydroflavones from the leaves of Helicia cochinchinensis.

Ken-ichi Morimura, Asuka Gatayama, Reiki Tsukimata, Katsuyoshi Matsunami, Hideaki Otsuka, Eiji Hirata, Takakazu Shinzato, Mitsunori Aramoto, Yoshio Takeda

文献索引：Phytochemistry 67(24) , 2681-5, (2006)

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摘要

From the leaves of Helicia cochinchinensis, collected on Okinawa Island, seven phenolic glucosides and two terpenic glucosides were isolated. Five of the phenolic glucosides were previously known, being identified with p-coumaric and ferulic acids glucosyl esters, rhodioloside, helicidiol, and naringenin 5-O-beta-D-glucopyranoside. The structures of two other phenolic glucosides, named heliciosides A and B, were elucidated to be 5-O-beta-D-glucosides of 3-hydroxyflavanone, namely aromadendrin and taxifolin, by means of spectroscopic analyses. The two terpenic glucosides were identified with ampelopsisionoside and icariside C1.