A new cembrane diterpene, named (-)-(1S)-15-hydroxy-18-carboxycembrene, was isolated from petroleum ether extract of the roots of the Euphorbia pekinensis Rupr. To our knowledge, this compound is the first cembrane-type diterpenoid to be found in the family Euphorbiaceae. The structure was
A new casbane diterpenoid, referred to as pekinenin G, together with one cembrane diterpene and four known casbane diterpenoids were isolated from the roots of Euphorbia pekinensis. Their structures were elucidated on the basis of spectroscopic studies and comparison with related known compounds.
Eight previously undescribed diterpenoids, euphoroyleans A-H, including two cembranes, three ingenanes, two ent-atisanes, and one ent-kaurane, along with 22 known analogues were isolated from the whole plants of Euphorbia royleana. The structures of euphoroyleans A-H, including the absolute
Three new diterpenoids, euphopanes A-C (1-3), including one ent-isopimarane (1), one ent-abietane (2) and one cembrane (3), along with five known compounds (4-8) were isolated from the roots of Euphorbia pekinensis. Their
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