(-)-brevisamide

(2S,3S,5S)-1,5-bis(benzyloxy)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-3-methylpentan-2-ol

(1S,3R,4S)-1,5-bis(benzyloxy)-1-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-4-methylpentan-3-ol