New sesquiterpene dilactones from Mikania micrantha.
Four new sesquiterpene dilactones, mikamicranolide (1), 11 beta,13-dihydromikamicranolide (2), 3 alpha-hydroxy-11 beta,13-dihydrodeoxymikanolide (3), and 2 beta,3 beta-dihydroxy-11 beta,13-dihydrodeoxymikanolide (4), were isolated from the whole plants of Mikania micrantha. Their structures were elucidated on the basis of spectroscopic analysis. Compounds 1 and 2 possess an unusual rearranged 12,8-germacranolide sesquiterpene skeleton.
Huang
Hongjuan
H
South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China.
Ye
Wanhui
W
Wu
Ping
P
Lin
Lidong
L
Wei
Xiaoyi
X
D002681:China; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D035742:Mikania / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism
D007783:Lactones; D012717:Sesquiterpenes