*3.4. Spectroscopic Data*

Callihypolin A (**1**) yellow oily, [α] 26 <sup>D</sup> −1.0◦ (*c* 0.05, MeOH); IR (neat) νmax 3452, 2956, 1768, 1682, 1376, 1342, 1202, 1141, 1018 cm<sup>−</sup>1; 1H-NMR and 13C-NMR (CDCl3, 600/150 MHz) see Table 1; HRESIMS *m*/*z* 399.17785 (calcd for C21H28O6Na, 399.17781).

Callihypolin B (**2**) yellow oily, [α] 26 <sup>D</sup> −47.6◦ (*c* 0.05, MeOH); IR (neat) νmax 3451, 2930, 1739, 1678, 1450, 1253, 1072 cm−1; 1H-NMR and 13C-NMR (CDCl3, 400/100 MHz) see Table 1; HRESIMS *m*/*z* 399.21419 (calcd for C22H32O5Na, 399.21420).
