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A new picfeltarraenone glycoside from Picria fel-terrae
Jie-ming Zou1, Li-sheng Wang, Ya-jian Guo
1Guilin Sanjin Pharmaceutical Co. Ltd., Guilin 541004, China. Sanjin@gl.gx.cninfo.net
Aim:
To investigate the chemical constituents from Picria fel-terrae Lour.
Methods:
Column chromatography techniques were used to isolate the chemical constituents, physico-chemical constants and spectroscopic analysis were employed for structural elucidation. Results Two triterpenoids named picfeltarraenone I (1) and picfeltarraenin XI (2) were isolated, and their structures were established to be 3,11,22-trioxo-16alpha-hydroxy-(20S,24)-epoxy-cucurbit-5,23-diene (1) and 3,11,22-trioxo-16alpha-hydroxy-(20S,24)-epoxy-cucurbit-5, 23-diene-2beta-O-beta-D-glucopyranoside (2), respectively.
Conclusion:
Compound 2 is a new compound, the 13CNMR data of compound 1 is reported for the first
