Objective: To study the chemical constituents of P. clavata (Bak.) Ching. Method: The whole plant of air-dried P. clavata was extracted with 90% EtOH. The extract was suspended in H2O and extracted with petroleum ether

EtOAc and n-BuOH

successively. The compounds were isolated and purified by column chromatography

and identified based on spectral analyses (MS

1H-NMR

13C-NMR). Result: Eight compounds were isolated from P. clavata

and characterized as diploptene (1)

hentriacontane (2)

octacosyl palmitate (3)

eicosyl behenate (4)

mangiferin (5)

β-sitosterol (6)

daucosterol (7) and sucrose (8). Conclusion: Compounds 1-4 were obtained from P. clavata for the first time.