*3.4. Machaerifurogerol (***1a***) and 5-epi-Machaerifurogerol (***1b***)*

Amorphous solid; [α] 26D +5.8 (*c* 0.05, MeOH); IR (KBr) υ max 3341 (OH), 2924, 1631, 1574, 1452, 1248, 961, 801, 613, 591 cm<sup>−</sup>1; 1H and 13C NMR, see Table 1; HRESIMS m/z 379.1906 [M + H]<sup>+</sup> (calcd. for C24H27O4, 379.1865).
