(1S,2R,8R,8aR)-2,8-bis(benzyloxy)-1-acetoxy-hexahydroindolizin-5(1H)-one
(1S,2R,8R,8aS)-2,8-bis(benzyloxy)-1-hydroxyhexahydroindolizin-5(1H)-one
(1S,2R,8R,8aR)-1,2,8-tris(benzyloxy)hexahydroindolizin-5(1H)-one
(1S,2R,8R,8aS)-8-benzyloxy-1,2-dihydroxyhexahydroindolizin-5(1H)-one
(3aR,9R,9aR,9bS)-9-benzyloxy-2,2-dimethylhexahydro-[1,3]dioxolo[4,5-a]indolizin-6(9bH)-one