Two new caffeoyl conjugation from Erigeron breviscapus.
Two new constituents with a novel basic skeleton were isolated from Erigeron breviscapus. On the basis of chemical and spectroscopic evidences, the structures of the new compounds were elucidated as 1R,3R-dihydroxy-4S,5R-dicaffeoyloxy cyclohexane carboxylic acid methyl ester (V), 1,4-dihydroxy-3R,5R-dicaffeoyloxy cyclohexane carboxylic acid methyl ester (VI).
College of Pharmacy, Second Military Medical University, Shanghai, China.
W D
WD
Zhang
H T
HT
Tam
W S
WS
Chen
D Y
DY
Kong
H T
HT
Li
Y H
YH
Wang
I
I
Fouraste
D002109:Caffeic Acids / Q000737:chemistry* / Q000302:isolation & purification; D002681:China; D003510:Cyclohexanes / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010936:Plant Extracts / Q000032:analysis; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
C426103:1,3-dihydroxy-4,5-dicaffeoyloxy cyclohexane carboxylic acid methyl ester; D002109:Caffeic Acids; D003510:Cyclohexanes; D010936:Plant Extracts