[Phenolic constituents of Ampelopsis grossedentata from zhangjiajie].

Objective: To study the phenolic constituents from Ampelopsis grossedentata.

Methods: Compounds were isolated using column chromatographic techniques (silica gel, polyamide gel, Sephadex LH-20) and semi-preparative HPLC. Structures were elucidated on the basis of spectral data (NMR and HR-MS).

[Content determination of two isomers containd in Garcinia hanburyi by HPLC].

Objective: To establish a method for determing the content of two isomers containd in Garcinia hanburyi by HPLC.

Method: Chromatographic column of SunFire (Waters) C8 (2.1 mm x 150 mm, 3.