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Tian Jun 1,Wu Fenge 1,Qiu Minghua 2,Nie Ruilin 2 ( 1 Laboratory of Natural Material Medica,Chengdu Institute of Biology,Chinese Academy of Sciences ,Chengdu 610041; 2 Laboratory of Phytochemistry,Kunming Institute of  
Seven compounds were isolated from the medicinal plant Pterocephalus hookeri .On the basis of spectral analysis and comparison with the data of known compounds,their structures were identified as songoroside A(1),loganin(2),palmitic acid(3),ursolic acid(4),oleanolic acid(5),β sitosterol(6),β gentiobiose(7).Among them,loganin(2)is the main compound.All these compounds were first reported in this plant.
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