[Studies on chemical constituents in fruit of Rubus chingii].
OBJECTIVE
To study the chemical constituents of the fruit of Rubus chingii.


METHODS
The compounds were isolated and purified by recrystallization and chromatography with silica gel column and Sephadex LH-20 column. Their structures were identified by physicochemical properties and spectral analysis.


RESULTS
Eleven compounds were isolated as oleanic acid (I), ursolic acid (II), maslinic acid (III), 2alpha-hydroxyursolic acid (IV), arjunic acid (V), hexacosyl p-coumarate (VI), tiliroside (VII), stearic acid (VIII), lacceroic acid (IX), beta-sitosterol (X), daucosterol (XI).


CONCLUSIONS
Compounds I, II, III, IV, V, VI, VIII, IX, XI were isolated from R. chingii for the first time.
Guo
Qi-lei
QL
Institute of Medicinal Plant Development, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100094, China.
Yang
Jun-shan
JS
D005638:Fruit / Q000737:chemistry; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification* / Q000031:analogs & derivatives; D010946:Plants, Medicinal / Q000737:chemistry*; D027824:Rosaceae / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000097245:Ursolic Acid
D009828:Oleanolic Acid; D014315:Triterpenes; D000097245:Ursolic Acid; C441431:arjunic acid; C412811:maslinic acid