Flavonoids in leaves of Alstonia scholaris / 中国中药杂志
Zhongguo Zhong Yao Za Zhi
; (24): 1111-1113, 2009.
Article
in Zh
| WPRIM
| ID: wpr-263031
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the flavonoids in leaves of Alstonia scholaris, an ethno-remedy of Dai People in Yunnan.</p><p><b>METHOD</b>The chemical constituents were isolated and purified by column chromatography. Their structures were elucidated on the basis of spectroscopic evidences and physicochemical properties.</p><p><b>RESULT</b>Eight flavonoids were isolated and identified as kaempferol (1), quercetin (2), isorhamnetin (3), kaempferol-3-0-beta-D-galactopyranoside (4), quercetin-3-0-beta-D-galactopyranoside (5), isorhamnetin-3-0-beta-D-galactopyranoside (6), kaempferol-3-0-beta-D-xylopyranosyl-( 2-1)-0-beta-D-galactopyranoside (7) ,quercetin-3-0-beta-D-xylopyranosyl-( 2-1)-0-beta-D-galactopyranoside (8).</p><p><b>CONCLUSION</b>Flavonoids 1-7 were isolated from A. scholaris for the first time.</p>
Full text:
1
Index:
WPRIM
Main subject:
Flavonoids
/
Chemistry
/
Plant Leaves
/
Alstonia
Language:
Zh
Journal:
Zhongguo Zhong Yao Za Zhi
Year:
2009
Type:
Article