Phenolic chemical constituents from Tibetan medicine Pulicaria insignis
To study the chemical constituents of the 70％ethanol extract of the Tibetan medicine Pulicaria insignis,thirteen compounds were isolated by silica gel,ODS,Sephadex LH-20,and HPLC techniques.The structures of the compounds were identified by physicochemical properties and spectroscopic techniques as hydroquinone(1),3,4-dihydroxybenzaldehyde(2),4-hydroxybenzaldehyde(3),p-hydroxyacetophenone(4),4-hydroxybenzoic acid(5),kaempferol 7-O-β-D-glucoside(6),patulitrin(7),patuletin 3-O-β-D-glucoside(8),quercetin 3-O-β-D-glucoside(9),6-methoxykaempferol(10),3,6-dimethoxyapigenin(11),macranthoin G(12),and 3,4,5-O-tricaffeoylquinic acid methyl ester(13).Among them,compounds 3,4,6,12 and 13 were isolated from Pulicaria for the first time,compounds 1,2,5,and 7-10 were firstly isolated from Pulicaria insignis.
Pulicaria insignis Drumm.ex Dunnchemical constituentTibetan medicine
NETL
NSTL
万方数据
