The total synthesis of the title compound (1), starting with (R)-(-)-alpha-
phellandrene (6), has been accomplished. The synthesis rigorously proves th
e relative stereochemical relationship of the diterpenoid and carbohydrate
domains of eleutherobin. Key reactions included a Nozaki-Kishi ring closure
to produce a furanophane (see 37 --> 38), a pyranose to furanose transposi
tion (see 50 --> 47), and a novel oxycarbaglycosidation (cf. 58 --> 87) for
joining the two domains.