[Study on the alkaloids constituents from Voacanga africana].

Objective: To study the alkaloids of Voacanga africana.

Methods: The alkaloids were isolated by normal phase silica gel and Sephadex LH-20 column chromatography. Their structures were elucidated by analysis of spectroscopic data.

[Studies on the chemical constituents of Ardisia tenera].

Objective: To investigate the chemical constituents of Ardisia tenera Mez.

Methods: Compounds were isolated by normal phase silica gel, MCI GEL and Sephadex LH-20 gel column chromatography. Their structures were elucidated by analyses of spectroscopic data.