During a search for new flavonoids, two new natural products identified by chemical and spectral methods as quercetin 3-O-(2″,3″,6″-triacetylglucoside) and apigenin 4′-O-(6″-p-coumaroylglucoside) have been found in the fern Dryopteris villarii. In addition a new fern constituent (kaempferol 3-O-(6″-acetylglucoside)-7-O-rhamnoside) together with kaempferol 3, 7-di-O-rhamnoside have been identified in this fern. Dryopteris villarii is the only Dryopteris species having a number of acylated flavonoid glycosides.
MarkhamKR. (1988) Distribution of flavonoids in the lower plants and its evolutionary significance. In The Flavonoids, Advances in Research since 1980, HarborneJB. (Ed.). Chapman and Hall, London, New York, 427–468.
2.
ImperatoF. (1997) Recent progress in phytochemistry of Pteridophyta. In Recent Research Developments in Phytochemistry, Vol. 1, PandalaiSG. (Ed.), Research Signpost, Trivandrum, India, 485–641.
3.
ImperatoF. (2000) Recent advances in phenolics of Pteridophyta. In Current Topics in Phytochemistry, Vol. 3, Research Trends, Trivandrum, India, 39–75.
4.
ImperatoF. (2003) Bioactive natural products from Pteridophyta. In Recent Research Developments in Phytochemistry, Vol. 5, PandalaiSG. (Ed), Research Signpost, Trivandrum, India, 191–228.
5.
HiraokaA (1978) Flavonoid Pattern in Athyraceae and Dryopteridaceae. Biochemical Systematics and Ecology, 6, 171–175.
6.
KarlC, PedersenPA, MullerG. (1981) Dryopterin, a novel C17-flavan from Dryopteris filix-mas.Zeitschrift fuer Naturforschung, 36C, 607–610.
7.
HiraokaA, MaedaM. (1979) A new acylated flavonol glycoside from Cyathea contaminans Copel and its distribution in the Pteridophyta. Chemical and Pharmaceutical Bulletin, 27, 3130–3136.
8.
HarborneJB. (1966) Comparative biochemistry of flavonoids-II: 3-deoxyanthocyanins and their systematic distributions in ferns and gesnerads. Phytochemistry, 5, 589–600.
9.
ImperatoF. (2006) Kaempferol 3-O-(acetylrutinoside), a new flavonoid and two new fern constituents, quercetin 3-O-(acetyglucoside) and 3-O-(acetylrutinoside) from Dryopteris villarii.American Fern Journal, 96, 93–96.
10.
MabryTJ, MarkhamKR, ThomasMB. (1970) The Systematic Identification of Flavonoids. Springer-Verlag, New York.
11.
ImperatoF. (2007) A new flavonoid, quercetin 3-O-(X”-acetyl-X”cinnamoyl-glucoside) and a new fern constituent, quercetin 3-O-(glucosylrhamnoside) from Dryoptetis villarii.American Fern Journal, in press.
12.
HarborneJB, WilliamsCA. (1975) Flavone and flavonol glycosides. In The Flavonoids, HarborneJB, MabryTJ, MabryH. (Eds), Chapman and Hall, London, 376–441.
13.
WilliamsCA, HarborneJB. (1994) Flavone and Flavonol Glycosides. In The Flavonoids, Advances in Research since 1986, HarborneJB. (Ed), Chapman and Hall, London, New York, 337–386.
14.
GoharAA, ElmazarMMA. (1997) Isolation of hypotensive flavonoids from Chenopodium species growing in Egypt. Phytoterapy Research, 11, 564–567.
15.
GeigerH, LangU, BritschE, MabryTJ, Suhr-ShuckerU, VeldeGV, WaldrumH. (1978) Die flavonglykoside von Equisetum telmateja.Phytochemistry, 17, 336–337.
16.
ImperatoF. (2006) Advances in phytochemistry of pteridophyta since 1999. In Current Topics in Phytochemistry, Vol 9, Research Trends, Trivandrum, India (in press).
17.
PetekF. (1965) Chromatographie des sucres methylés. Bulletin de la Société Chimique de France, 263–267.
