[Study on the chemical constituents from the bulbs of Zephyranthes candida].

OBJECTIVE: To study the chemical constituents from the bulbs of Zephyranthes candida. METHODS: The chemical constituents were separated and purified by means of several chromatographies and their structures were elucidated by spectroscopic methods. RESULTS: Six compounds were isolated and identified as trisphaeridine (I), p-hydroxybenzaldehyde (II), sucrose (III), (-)-amarbellisine (IV), lycorine (V), (+)-haemanthamine (VI). CONCLUSION: Compounds I - IV are obtained from this genus for the first time.