Tsuda Yoshisuke, Akhtar Muhammad Nadeem, Sener Bilge, Parvez Masood, Sashida Yutaka, Mimaki Yoshihiro, Mizuno Mizuo
H.E.J. Research Institute of Chemistry, International Center for Sciences, University of Karachi, Karachi-75270, Pakistan.
Nat Prod Res. 2004 Jun;18(3):205-9. doi: 10.1080/14786410410001708990.
The structure of a new crystalline base (melting point (mp) 167-169 degrees C) obtained from Fritillaria imperialis was elucidated as (20R, 25R)-5alpha,17beta-cevanine-3beta,6beta-diol, X-ray diffraction analysis of the mono-hydrate. The base was found to be identical with persicanidine B and also with harepermine.