Two new xanthones from Hypericum japonicum.
Two new xanthones, 1,6-dihydroxyisojacereubin-5-O-beta-D-glucoside (1) and 3,6,7-tri-hydroxy-1-methoxy-xanthone (2), were isolated from Hypericum japonicum. The structural elucidation of the isolated compounds were primarily based on HREIMS, EIMS, UV, IR, 1D-, and 2D-NMR analyses, including COSY, HMQC, HMBC, and NOESY correlations.
Fu
P
P
Department of Phytochemistry, College of Pharmacy, Second Military Medical University, Shanghai, PR China.
Zhang
W-D
WD
Liu
R H
RH
Li
T-Z
TZ
Shen
Y-H
YH
Li
H-L
HL
Zhang
W
W
Chen
H-S
HS
D002681:China; D020902:Hypericum / Q000737:chemistry*; D013058:Mass Spectrometry; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
D010936:Plant Extracts; D044004:Xanthones