Xanthones from Polygala alpestris (Rchb.)
2004 ◽
Vol 59
(5-6)
◽
pp. 335-338
◽
Keyword(s):
Bioactivity-guided fractionation of Polygala alpestris L. (Rchb.) extracts led to the identification of two new xanthones, 1,3,7-trihydroxy-2,6-dimethoxyxanthone (1) and 2,3-methylenedioxy-4,7-dihydroxyxanthone (2). In addition five known compounds 3,4-dimethoxy-1,7-dihydroxyxanthone (3), 1,3-dihydroxy-7-methoxyxanthone (4), 1,7-dihydroxy-2,3-dimethoxyxanthone (5), 3′,6-O-disinapoyl sucrose (6) and 3′,5′-dimethoxybiphenyl-4-olo (7) were isolated. The structures of the isolated compounds were established by means of high resolution mass spectrometry, mono- and bi-dimensional NMR spectroscopy. All isolated compounds were tested for cytotoxic activity against three tumor cell lines (LoVo, HL-60, K 562).
2009 ◽
Vol 4
(10)
◽
pp. 1934578X0900401
◽
2013 ◽
Vol 8
(9)
◽
pp. 1934578X1300800
2020 ◽
2020 ◽
Vol 86
(8)
◽
pp. 23-31
2015 ◽
Vol 33
(10)
◽
pp. 1046
◽