Diterpenoids from the flowers of Rhododendron molle.
Five new grayanane-type diterpenoids, rhodomolleins IX (1), X (2), XI (3), XII (4), and XIII (5), a new kalmane-type diterpenoid, rhodomollein XIV (6), and seven known diterpenoids, grayanotoxin II, rhodomolleins I and XIX, rhodojaponins II, III, and VI (7), and kalmanol, were isolated from the flowers of Rhododendron molle. The structures of 1-6 were elucidated by spectroscopic methods, including 1D and 2D NMR experiments.
Chen
Shao-Nong
SN
Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China.
Zhang
Hua-Ping
HP
Wang
Li-Quan
LQ
Bao
Guan-Hu
GH
Qin
Guo-Wei
GW
D002681:China; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D035264:Flowers / Q000737:chemistry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D029793:Rhododendron / Q000737:chemistry*
D004224:Diterpenes