The tomato saponin, esculeoside A.

@article{Nohara2010TheTS,
  title={The tomato saponin, esculeoside A.},
  author={Toshihiro Nohara and Masateru Ono and Tsuyoshi Ikeda and Yukio Fujiwara and Mona El-Aasr},
  journal={Journal of natural products},
  year={2010},
  volume={73 10},
  pages={1734-41}
}
Esculeoside A (2), a spirosolane steroidal glycoside, is a major constituent isolated from Solanum lycopersicum, a commercial strain of mini tomatoes. The content variability of esculeoside A (2) was examined in mini, midi, and Momotaro tomatoes and various processed tomato products. In the green immature tomato fruit, tomatine (1) is oxidized at C-23 and C-27 to produce esculeoside A (2) in the ripe fruit. Further, esculeoside A (2) is partly converted to 3β-hydroxy-5α-pregn-16-en-20-one 3-O… CONTINUE READING

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