Solanaceous steroidal glycoalkaloid

Roddick, J.G. Complex formation between solanaceous steroidal glycoalkaloids and free sterols in vitro. Phytochemistry 1979 18 1467-1470. 

Convolvulaceous Resin Glycosides versus Solanaceous Steroidal Glycoalkaloids (Sect. 7.8.1)... 

The fruit of a number of solanaceous plants, including tomato Lycopersicon esculentum), potato Solanum tuberosum) and eggplant Solarium melongena esculentum), have cholinesterase-inhibiting effects (Krasowski et al. 1997). They contain solanaceous glycoalkaloids o-solanine and o-chaconine, which are triglycosides of solanidine, a steroidal alkaloid derived from cholesterol. They are the only plant chemicals known to inhibit both acetlycholinesterase and butyrylcholinesterase, both in vitro and in vivo. 

Hydroxy-spirosolanes (Fig. 7.19). Solasodine is the dominating congener of the 25/ -series (22ot/V-configurated) and even the most frequent individual aglycone of all types of solanaceous glycoalkaloids. It was detected unequivocally in 207 out of 367 steroidal alkaloid-positive Solanum spp. (56%). 

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