Synthesis of the Skipped Polyene Chain and Its Neighboring Highly Oxygenated Pyran Ring en route to Delivering the C(43)-C(67) Subsector of Amphidinol 3
An enantioselectivesynthesis of keyintermediates for the synthesis of the anti-microbially active pseudomonicacids A (1), B (2) and C (3) is described. D-Ribose (4) was used as starting material.