Aim: To study the chemical constituents of Paeonia lactiflora.
Methods: The constituents of P. lactiflora were separated by using various kinds of modern chromatography and was identified its structure on the basis of spectral analysis.
Results: A monoterpene glucoside named albiflorin R1 was isolated from the roots of Paeonia lactiflora Pall. In the structure of albiflorin R1, the aglycone connected with a glucose at its 2-OH while the hemiacetal hydroxyl in glucose moiety was free.
Conclusion: Albiflorin R1 is a new monoterpene glycoside.