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A new flavonol glycoside from aerial parts of Pteridium aquilinum was identified as kaempferol 7- O -rhamnoside-4′- O -glucoside by chemical and spectral methods. In addition a mixture of quercetin 3- O -fructoside and isoquercitrin was found in this plant material.

A new acylated flavonol glycoside from aerial parts of Pteridium aquilinum was characterized as kaempferol 3-O-(5″-feruloylapioside) by chemical and spectral methods.

A new flavonol glycoside from aerial parts of Pteridium aquilinum was characterized as rhamnetin 3- O -β-laminaribioside by chemical and spectral methods. © 1997 Elsevier Science Ltd. All rights reserved

A new acylated flavonol glucoside from the aerial parts of Pteridium aquilinum was characterized as kaempferol 3- O - β -(6″-caffeoylglucoside) by chemical and spectral methods.

A new flavone O-glycoside from aerial parts of Pteris cretica was characterized as luteolin 7-O-β-sophoroside by chemical and spectral methods. In addition, luteolin 7-O-β-gentiobioside was identified in this plant material.

Two new flavonol glycosides from aerial parts of Pteridium aquilinum were identified as quercetin 3- O - β -laminaribioside and isorhamnetin 3- o - β -laminaribioside by chemical and spectroscopic methods.

A new C-glycosylflavone from the aerial parts of Asplenium viviparum was characterized as 3,6,8-tri-C-xylosylapigenin by chemical and spectral methods.

A new flavonol glycoside from the aerial parts of Cheilanthes fragrans was characterized as kaempferol 3- O -(2″- p -coumaroylrhamnoside)-7- O -rhamnoside by chemical and spectral methods.

Three new xanthone 2,4-di- C -glycosides, 1-hydroxy-3,6,7-trimethoxyxanthone 2,4-di- C -glucoside and two of its O -rhamnosides, have been found in aerial parts of the fern Asplenium adiantum-nigrum .

A new flavonol glycoside present in aerial parts of the fernAsplenium septentrionale has been identified as kaempferol 3-sophoroside-4′-glucoside by chemical and spectroscopic methods.

A new C -glycosylflavone present in aerial parts of Asplenium viviparum has been identified as luteolin 6,8-di- C -rhamnoside by chemical and spectral methods.

The violet-red pigments (bougainvillein-v's) isolated from bracts of Bougainvillea glabra var. sanderiana have been shown to the acylated betacyanins. Four deacylated pigments were obtained by alkaline hydrolysis of the total betacyanin fraction. Two of these were proved to be respectively 6- O -rhamnosylsophoroside and 6- O -β-sophoroside of betanidin, the other two being the corresponding isobetanidin derivatives.

The isolation of seven new betacyanins from purple bracts of Bougainvillea “Mrs. Butt” is described. Two of these pigments, bougainvillein-r-I and isobougainvillein-r-I, have been shown to be 5- O -β-sophorosides of betanidin and isobetanidin, respectively, the remaining five being hydroxycinnamoyl derivatives of bougainvillein-r-I and isobougainvillein-r-I.

Thirty-four species of the family Cactaceae have been investigated for their betacyanin content. All the species examined contain betanin and many of them also phyllocactin. Betanidin and some new betacyanins have a more limited occurrence.

Two new and two known sulphate esters of hydroxycinnamic acid—sugar derivatives have been isolated from the fronds of the fern Adiantum capillus-veneris. The new compounds have been shown to be 1-p-coumarylglucose 2-sulphate and 1-caffeylgalactose 6-sulphate by chemical and spectroscopic methods.

A new natural product isolated from the fronds of the fern Adiantum capillus-veneris has been shown to be kaempferol 3-sulphate by chemical and spectroscopic methods.

A new xanthone- O -glycoside isolated from the fern Asplenuim adiantum-nigrum has been identified as 3,7,8- trihydroxyxanthone-1- O -β-laminaribioside by chemical and spectroscopic methods.

From aerial parts of the fern Asplenium bulbiferum , besides kaempferol 3,7-diglucoside and kaempferol 3- O -rhamnoside- 7- O -glucoside, the new glycoside kaempferol 3- O -β-glucoside-7- O -β-galactoside has been characterized.