Purpurea glycosides

N.A. Purpurea-glycosides A and B, digoxin, digitoxin, caffeic acid, lanatoside, choline, saponins, chlorogenic acid.100 Improving blood circulation to the kidneys, it has cardiologic effect. 

Franz, G. and Hassid, W. (1967) Biosynthese of digitoxose and glucose in the purpurea glycosides of Digitalis purpurea (L.). Phytochemistry, 6,841. ... 

Today one of the Dipfitalis purpurea glycosides is mainly used therapeutically, namely digitoxin, which is the secondary glycoside of Purpureaglycoside A i.e. where the terminal glucose molecule has been split off. 

Lanatosides.— Lanatoside A (3) can be written with a great degree of certainty as (78), but this structure is not yet completely confirmed. The tetrasaccharide of (78) is not known in the free form. Lanatoside B, (3 28.80.31 D 280 nd contain the same tetraose but different aglycons. This tetraose occurs in unacetylated form in purpurea glycosides A and... 

Digitalis purpureae folium (2) is characterized by the major zone of purpurea glycoside A with a slightly lower R, value than lanatoside C (Tl). Purpurea glycoside B is found as a minor zone directly below purpurea glycoside A, followed by a cardenolide zone at R, 0.2. 

D In UV-365 nm, however, a spectrum of about 20 blue fluorescent zones from Rf 0.05-0.95 is. seen, with a specific dark-blue fluorescence of lanatoside A and purpurea glycoside A. Green (vis) or red (UV-365 nm) zones at Rf 0.85 are due to chlorophyll, and yellow zones at the solvent front are due to flavonoids or anthraquinones (e.g. digilutein), which to some extent overlay the cardenolide genins. 

Purpurea glycosides see Digitalis glycosides. Purpurin (1,2,4-trihydroxyanthraquinone, C. 1.75410). P OH... 

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