title: [Chemical studies on the constituents of Phyllanthus urinaria L].
abstract: Two new phenolic compounds (crystal VI and crystal IX) have been isolated from Phyllanthus urinaria L. (Euphorbiaceae). Their structures were determined by analysis of their UV, IR, 1H-NMR, 1H-1H COSY, 13C-1H COSY, long range 13C-1H COSY, DEPT, EIMS and HREIMS spectral data. Crystal VI was determined as methyl brevifolincarboxylate. Crystal IX was elucidated as trimethyl ester dehydrochebulic acid. All of the signals of the 13C-NMR of these two new compounds have been assigned mainly according to DEPT, 13C-1H COSY and long range 13C-1H COSY. Accompanying these two new compounds, 8 known compounds have been isolated. By using chemical reactions, UV, IR, 1H-NMR, MS, their structures were elucidated as n-octadecane(I), beta-sitosterol(III), ellagic acid(IV), daucosterol(V), kaempferol(VII), quercetin(VIII), gallic acid(X) and rutin(XI). Crystal II is an aldehyde, its structure elucidation is in progress.
authors.affiliation: Institute of Materia Medica, Shandong Provincial Academy of Medical Sciences, Jinan.
authors.forename: Q Q
authors.initials: QQ
authors.lastname: Yao
authors.forename: C X
authors.initials: CX
authors.lastname: Zuo
mesh_terms: D001578:Benzopyrans / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008298:Maleates / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure
chemical_list: D001578:Benzopyrans; D004365:Drugs, Chinese Herbal; D008298:Maleates; C087786:methyl brevifolincarboxylate; C087785:dehydrochebulic acid trimethyl ester