Solanum steroid alkaloids alkamine

Solanum steroid alkaloids have been isolated so far from nearly 350 species of the plant families Solanaceae and Liliaceae, in which they generally occur as glycosides. All of the 75 known steroidal alkamines of the Solanum type,... 

Table 7.3 Steroidal alkaloids (alkamines) alphabetically listed within the different structural types For 41 out of altogether 115 compounds from Solanum spp. (113 compounds), Lycianthes biflora, and Sarachapunctata (one compound each) at least one corresponding glycoalkaloid was found and structurally elucidated, i.e., for 36% of the alkamines also corresponding glycosides are known (continued)...

The alkamines isolated directly from plant material or obtained by acid or enzymatic hydrolysis of naturally occurring glycosides between 1967 and 1979 are summarized in Table III. Physical me ods are of increasing importance in structure elucidation. Recent papers have dealt with IR spectra (173), H NMR (174,175), NMR (176-178,357,358), EPR (179), ORD (180-183), and MS (184,351,352) of Solanum alkamines. Some X-ray analyses have been carried out since 1967 (58, 81, 149, 185-189, 359). Tables rV-VI survey the characteristic features of H NMR, NMR, and MS of Solanum alkaloids. Silver nitrate-containing adsorption layers were shown to be useful in TLC separation of 5a-saturated and S-unsaturated alkamines (194,195). High-pressure liquid chromatography has been applied successfully for the separation of steroidal Solanum and Veratrum alkamines (373). 

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