Chemical Constituents of Chimonanthus nitens Oliv.
OBJECTIVE To study the chemical constituents from the leaves of Jiangxi genuine medicinal material Chimonanthus nitens Oliv.METHODS The compounds were isolated and purified by silica gel column chromatography,Sephadex LH-20,ODS column chromatography,semi-preparative HPLC,and so on.Their structures were elucidated on the basis of physiochemical properties and spectral data.RESULTS Ten compounds were isolated and elucidated as uracil (1),6,7-dimethoxycoumarin (2),6,7,8-trimethoxycoumarin (3),p-hydroxybenzoic acid ethyl ester (4),1:1 mixture of two diastereomers identical with (3RS,6RS)-2,6-dimethylocta-1,7-dien-3,6-diol (5 and 6),kaempferol (7),isofraxidin (8),scopoletin (9),and loliolide (10).CONCLUSION Compounds 1,3-6 and 10 are isolated from this plant for the first time and compounds 1,4-6 are isolated from this genus for the first time.