Chemical constituents from Tamarix chinensis

Objective To study the chemical constituents from the stems and leaves of Tamarix chinensis.Methods The compounds were isolated and purified by silica gel,Sephadex LH-20,ODS column chromatography,and their structures were identified on the basis of physicochemical properties and spectroscopic analysis.Results Fifteen compounds were isolated and identified as tamarixetin-7-O-β-D-glucoside(1),tamarixetin-3-O-α-L-rhamnoside(2),rutin(3),5,7,3′,5′-tetrahydroxy-6,4′-dimethoxyflavone(4),quercetin-7,3′,4′-trimethyl ether(5),kaempferol-3-O-β-D-glucuronide(6),apigenin(7),rhamnocitrin(8),kaempferol(9),quercetin(10),tamarixetin(11),betulinic acid(12),2α,3β-dihydroxy-urs-12-en-28-oic acid(13),β-amyrin acetate(14),and 2α,3β,23-trihydroxyolean-12-ene(15).Conclusion Compounds 1—7 and 13—15 are isolated from this plant for the first time,and compounds 13 and 15 are isolated from this genus for the first time.