Flavonoid triglycosides from the seeds of Syzygium aromaticum.
Two new apigenin triglycosides, apigenin 6-C-[beta-D-xylopyranosyl-(1'''-->2'')-beta-D-galactopyranoside]-7-O-beta-D-glucopyranoside and apigenin 6-C-[beta-D-xylopyranosyl-(1'''-->2'')-beta-D-galactopyranoside]-7-O-beta-D-(6-O-p-coumarylglucopyranoside) were isolated from the ethanol extract of the seeds of Syzygium aromaticum. Their structures were elucidated by chemical and spectral analysis (UV, FABMS, 1H, 13C NMR, HMQC, HMBC, NOESY and DEPT).
Nassar
Mahmoud I
MI
Natural Products Chemistry Department, National Research Centre, Dokki 12622, Cairo, Egypt. mnassar_eg@yahoo.com
D047310:Apigenin / Q000302:isolation & purification*; D004187:Disaccharides / Q000302:isolation & purification*; D004578:Electron Spin Resonance Spectroscopy; D005419:Flavonoids / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D012639:Seeds / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D027842:Syzygium / Q000737:chemistry*
D004187:Disaccharides; D005419:Flavonoids; C508369:apigenin 6-C-(xylopyranosyl-1'''-2''-galactopyranoside)-7-O-(6''''-O-4-coumarylglucopyranoside); C508368:apigenin 6-C-(xylopyranosyl-1'''-2''-galactopyranoside)-7-O-glucopyranoside; D047310:Apigenin