[Studies on chemical constituents from twigs of Morus atropurpurea].
OBJECTIVE
To study the chemical constituents of the twigs of Morus atropurpurea.


METHODS
The compounds of the EtOAc fraction were isolated and purified by column chromatography on silica gel, polyamide, Sephadex LH -20, and their structures were elucidated on the basis of spectroscopic evidence (MS, NMR).


RESULTS
Eleven compounds were identified as mulberrin (1), cyclomulberrin (2), morusin (3), cyclomorusin (4), 2', 4',4, 2"-tetrahydroxy-3'-{3"-methylbut-3"-enyl-}-chalcone (5), mulberrofran G (6), scopoletin (7), moruchalcone A (8), kaempferol (9), ursolic acid (10), beta-daucosterol (11).


CONCLUSIONS
Except compounds 9 and 11, all the other compounds were obtained from M. atropurpurea for the first time.
Xu
Yan-Lan
YL
Guangdong Provincial Key Lab of Biotechnology for Plant Development, South China Normal University, Guangzhou 510631, China.
Li
Xu-E
XE
Zou
Yu-Xiao
YX
Chen
Ji-Jun
JJ
D005419:Flavonoids / Q000737:chemistry; D044949:Kaempferols / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D031625:Morus / Q000737:chemistry; D010840:Phytosterols / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry*; D012603:Scopoletin / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry; D000097245:Ursolic Acid
D005419:Flavonoids; D044949:Kaempferols; D010840:Phytosterols; D012603:Scopoletin; D014315:Triterpenes; D000097245:Ursolic Acid; C530443:beta-dauosterol; C057451:morusin; C006552:kaempferol