Two novel, potentially antimicrobial erythronolide aglycon analogs ((-)-9 and (-)-30, respectively), which incorporate a large number of contiguous stereogenic centers, have been prepared by multistep synthesis from simple chirons. The chemistry presented demonstrates the power of the so-called 'naked sugars of the second acneration' approach. As for the sporeamicins, our macrolides are 9,12-anhydroerythronotides, yet presenting a higher degree of complexity due to additional functional groups.