Scilla glycosides Squill

Types of Cardiac Glycoside. Three groups of plants produce cardenolides the Digitalis species, growing in temperate climates the Strophanthus species, of tropical provenance and Scilla (sea onion or squill), a Mediterranean plant. 

Scillae buibus var. alba (3-5). The white squill samples (3,4) contain predominantly pro.scillaridin, seen as a major light-brown fluorescent zone at R, 0.6 (T/a). The glycoside scillaren A (R, — 0.4/b) dominates the standardized commercial extract 5. Three additional cardenolide zones (e.g. glucoscUlaren R, — 0.2) are detectable as yellow-browii fluorescent zones. Sciliirosidin glycosides are absent in white squill. 

Scillaren. A mixture of glycosides, scillaren A and B in the proportions in which they occur in fresh squill, Ur-ginea Scilla) maritime (L.) Baker, Liliaceue, about 2 parts of A to I part of B. Isolation of scillaren and separation of A and B Stoll et al.. Helv. Cfurn. Acta 16, 703 (1933). 

The homoisoflavanones belong to a small family of natural products whose first member was isolated by Boehler and Tamm in 1967 from bulbs of Eucomis bicolor Bak. (9). Their discovery resulted from a systematic chemical analysis of Liliaceae for cardiac glycosides. However, unlike the botanically closely related Urginea maritima (L.) Bak. (Squill) and some species of Scilla, Ornithogalum and Dipcadi 33), Eucomis plants did not contain even traces of these compounds. 

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