1.
J Asian Nat Prod Res
; 17(12): 1213-9, 2015.
Article
in English
| MEDLINE
| ID: mdl-26654567
ABSTRACT
Euphorpekone A (1) and euphorpekone B (2), two new diterpenoids, 3ß-hydroxy-25-methyloxylanosta-8,23-diene, a new triterpenoid (3), together with a known triterpenoid, 3ß,25-dihydroxylanosta-8,23-diene (4), were isolated from Euphorbia pekinensis Rupr. Their structures were elucidated on the basis of UV, IR, 1D ((1)H, (13)C, NOE) and 2D ((1)H-(1)H COSY, HSQC, HMBC) NMR, HR-ESI-MS, X-ray diffraction analysis, and CD method.
