Cardenolides and Sapogenins

Comparison with the complete 13C NMR signal assignments of steroids enabled the interpretation of the 13C NMR spectra of structurally related cardenolides and sapogenins [596, 597]. Besides single-frequency off-resonance decoupling and low power noise decoupling, spectra of specifically deuterated compounds were used as additional aids for the signal identifications. The 13C chemical shifts are collected in Table 5.12 and the 

Digitoxi- Gitoxi- Digoxi- Strop han- Deoxy- Tigogenin Diosgenin Hecogenin Smila- Sarsa- 

genin genin genin tidin tigogenin genin sapo- 

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