Three diterpene glucosides and a diphenylamine derivative from Pieris formosa.
Three new diterpenoids, pierisformosides G-I (1-3) and a diphenylamine derivative 4 have been isolated from the ethanol extract of Pieris formosa leaves, compound 1 being a new type seco-ring-A kaurane diterpene glucoside. Their structures were elucidated with the aid of NMR spectroscopy including two-dimensional-NMR techniques.
Wang
L Q
LQ
Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 294 Tai-Yuan Road, 200031, Shanghai, PR China.
Qin
G W
GW
Chen
S N
SN
Li
C J
CJ
D004159:Diphenylamine / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D029791:Ericaceae; D006801:Humans; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves
D004224:Diterpenes; D010936:Plant Extracts; D004159:Diphenylamine