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

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 role of special group article in ancient chinese medical prescription.

In the traditional medicine of the East, a prescription to cure diseases consisted of plural sorts of active natural products. Every article of those products has native features respectively, but each article was supposed to carry out fixed roles in the prescription. An article contains generally some sorts of active compounds, therefore it could be able to divide the role from the chemical, medicinal natures of those compounds.