Anthrone and oxanthrone C,O-diglycosides from Picramnia teapensis.
Two C,O-diglycosylated compounds, the anthrone picramnioside F, and the oxanthrone mayoside C, were isolated from the stem bark of Picramnia teapensis, along with the previously reported anthraquinones, 1-O-beta-D- and 8-O-beta-D-glucopyranosyl emodin. The compounds were separated by recycling-HPLC, and their structures were determined on the basis of spectroscopic analysis. CD measurements were used to establish the absolute configuration of the anthrone and oxanthrone. The antifungal activity of 1-O-beta-D- and 8-O-beta-D-glucopyranosyl emodin against Leucoagaricus gongilophorus was shown to be similar to that of the lignan sesamin.
Rodríguez-Gamboa
T
T
Departamento de Química, Universidade Federal de São Carlos, SP, Brazil.
Victor
S R
SR
Fernandes
J B
JB
Fo
E R
ER
da Silva
M F
MF
Vieira
P C
PC
Pagnocca
F C
FC
Bueno
O C
OC
Hebling
M J
MJ
Castro
O
O
D002851:Chromatography, High Pressure Liquid; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019685:Rosales / Q000737:chemistry*; D013057:Spectrum Analysis
D006027:Glycosides