2920231-88-3 tert-butyl (4aS,7aS)-7-oxo-3,4,4a,5,6,7a-hexahydro-1H-cyclopenta[c]pyridine-2-carboxylate
2920238-95-3 tert-butyl (4aR,7aR)-5-oxo-3,4,4a,6,7,7a-hexahydro-1H-cyclopenta[c]pyridine-2-carboxylate
2828432-10-4 (4R)-4-methyl-2-{3-[(4R)-4-methyl-4,5-dihydro-1,3-oxazol-2-yl]pentan-3-yl}-4,5-dihydro-1,3-oxazole