title: Ingenane diterpenes from Euphorbia petiolata.
abstract: From the whole plants of Euphorbia petiolata, four new ingenane-type diterpenoids, 3,20-O-diacetylingenol 5-O-(2' E,4' Z)-tetradecadienoate (1), 5,20-O-diacetylingenol 3- O-(2' E,4' Z)-tetradecadienoate (2), ingenol 3-O-(2' E,4' Z)-tetradecadienoate (3), and 5,20-O-isopropylidenylingenol 3-O-(2' E,4' Z)-tetradecadienoate (4) were isolated. Their structures were elucidated by spectroscopic methods and chemical transformations.
authors.affiliation: Institute of Organic Chemistry, State Key Laboratory of Applied Organic Chemistry at Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Y P
authors.initials: YP
authors.lastname: Shi
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Jia
authors.forename: B
authors.initials: B
authors.lastname: Ma
authors.forename: S
authors.initials: S
authors.lastname: Saleh
authors.forename: J
authors.initials: J
authors.lastname: Lahham