3 вынікі
To investigate the chemical components of Ophioglossum thermale,one of the original species of Chinese medicine "Yizhijian".
The air-dried whole plant material of Ophioglossum thermale was extracted by thermal reflux with 95%Et OH,then separated and purified by joint utilization of various
Two new glycosylated and acylated flavonols, viz. quercetin-3-O-[(6-caffeoyl)-β-glucopyranosyl (1 → 3) α-rhamnopyranoside]-7-O-α-rhamnopyranoside (2), and kaempferol-3-O-[(6-caffeoyl)-β-glucopyranosyl (1 → 3) α-rhamnopyranoside]-7-O-α-rhamnopyranoside (3), together with the known
BACKGROUND
Homoflavonoids, characterised by one more carbon atom directly added to C6 -C3 -C6 backbone of flavonoids, are rich in the species of genus Ophioglossum. Up to now we have little knowledge about their MS fragmentation patterns. It is therefore necessary to investigate their MS