Abstract
Three new steroidal alkaloid glycosides, lycoperosides A-C, were isolated from leaves and fruits of tomato, Lycopersicon esculentum, and structurally elucidated as the 3- O- β-lycotetraosides of (23 R)-23-acetoxy-tomatidine, (23 S)-23-acetoxysoladulcidine and (23 S,25 S)-23-acetoxy-5 α,22 αN-spirosolan-3 β-ol. In addition to these glycosides, leaves and fruits were found to contain the known major alkaloid tomatine (tomatidine 3- O- β-lycotetraoside) and leaves a small amount of γ-tomatine (tomatidine 3-O-[β- d-glucopyranosyl -(1 → 4)-β- d-galactopyranoside ] , lycoperoside D).
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