| In order to search for chemical constituents from the fruits of Syzygium malaccense,normal and adverse column
chromatography(CC) as well as Sephadex LH-20 and MCI gel(CHP20P) CC wereused to isolate and purified compounds. In
result,seventeen compounds were obtained and their structures were identified by the 1
H NMR and 13CNMR experiments
and comparison with the values reported as kaempferol-3-O-β-D-galucopyranoside(1),kaempferol-3-O-α-L-rhamnopy⁃
ranoside(2),isorhamnetin(3),isorhamnetin-3-O-α-L-rhamnopyranoside(4),quercetin-3-O-β-D-glucopyranoside(5),quer⁃
cetin-3-O-α-L-rhamnopyranoside(6),quercetin-3-O-β-D-xylopyranoside(7),myricetin-4′- methoxy-3-O-α-L-rham⁃
nopyranoside(8),6,8-dimethylpinocembrin(9),pinocembrin-7-O-β-D- glucopyranoside(10),stercurensin(11),phloridzosid
(12),3-O-methylellagic acid 3′-O-α- L-rhamnopyranoside(13), epimedokoreanone A(14),5,7-dihydroxy-2-methylchro⁃
mone(15),trans-cinnamic acid(16),dimethylmalate(17). In which 10 isolates belongs to flavonoid and 2 to chalcone. Among
them,compounds 4,6,14,15 and 17 were isolated from the genus Syzygium for the first time,1,4,5,6,9,10 and 13-17 were ac⁃
quired from S. malaccense for the first time,and all of them were firstly obtained from the fruits of S. malaccense. |
