(3aR,5R,6aS)-5-hydroxy-octahydropentalen-2-one

(3aR,5R,6aS)-5-methoxy-octahydropentalen-2-one

(3aR,5R,6S,6aR)-5-(hydroxymethyl)-2,2-dimethyl-tetrahydro-2H-furo[2,3-d][1,3]dioxol-6-ol

(3aR,5S,6aS)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxole-5-carboxylic acid

(3aR,5S,6aS)-5-(trifluoromethyl)-octahydrocyclopenta[c]pyrrol-5-ol hydrochloride

(3aR,5S,6aS)-5-ethynyl-octahydrocyclopenta[c]pyrrol-5-ol hydrochloride

(3aR,5S,6aS)-octahydrocyclopenta[c]pyrrol-5-ol hydrochloride

(3aR,5S,6aS)-octahydrocyclopenta[c]pyrrole-5-carboxylic acid hydrochloride

(3aR,5S,6S,6aR)-5-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-tetrahydro-2H-furo[2,3-d][1,3]dioxol-6-ol

(3aR,6aR)-2,2-dimethyl-2H,3aH,4H,6aH-cyclopenta[d][1,3]dioxol-4-one

(3aR,6aR)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxol-4-one

(3aR,6aR)-2-imino-hexahydro-5lambda6-thieno[3,4-d][1,3]thiazole-5,5-dione

(3ar,6ar)-3a,6a-dimethyl-octahydropentalene-2,5-dione

(3ar,6ar)-3a,6a-dimethyl-octahydropyrrolo[3,4-c]pyrrole dihydrochloride

(3ar,6ar)-octahydropentalene-3a-carbaldehyde

(3ar,6ar)-octahydropentalene-3a-carboxylic acid

(3ar,6ar)-octahydropyrrolo[3,4-c]pyrrole-3a-carboxylic acid

(3aR,6aS)-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-c]pyrrole

(3aR,6aS)-2,2-dimethyl-hexahydro-[1,3]dioxolo[4,5-c]pyrrole-5-carbonyl chloride

(3aR,6aS)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxol-5-ol

(3aR,6aS)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxol-5-one

(3aR,6aS)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxole-5-carbaldehyde

(3aR,6aS)-2,2-dimethyl-hexahydrocyclopenta[d][1,3]dioxole-5-carboxylic acid

(3aR,6aS)-2-(2-fluorobenzoyl)-octahydropyrrolo[3,4-c]pyrrole hydrochloride

(3aR,6aS)-2-benzoyl-5,5-difluoro-octahydrocyclopenta[c]pyrrole

(3aR,6aS)-2-benzoyl-octahydrocyclopenta[c]pyrrole

(3aR,6aS)-2-benzoyl-octahydropyrrolo[3,4-c]pyrrole hydrochloride

(3aR,6aS)-2-benzyl-octahydropyrrolo[3,4-c]pyrrole

(3aR,6aS)-2-benzyl-octahydropyrrolo[3,4-c]pyrrole-1,3-dione

(3aR,6aS)-2-ethoxy-tetrahydro-2H-furo[3,4-d][1,3,2]dioxaborole

(3aR,6aS)-2-ethyl-octahydropyrrolo[3,4-c]pyrrole dihydrochloride

(3aR,6aS)-2-ethyl-tetrahydro-2H-furo[3,4-d][1,3,2]dioxaborole

(3aR,6aS)-2-imino-3a,6a-dimethyl-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrol-2-one dihydrochloride

(3aR,6aS)-2-imino-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrol-2-one dihydrochloride

(3aR,6aS)-2-methyl-5-{5H,6H,7H,8H-pyrido[4,3-c]pyridazin-3-yl}-octahydropyrrolo[3,4-c]pyrrole

(3aR,6aS)-2-methyl-octahydropyrrolo[3,4-c]pyrrole

(3aR,6aS)-2-methyl-octahydropyrrolo[3,4-c]pyrrole-1,3-dione hydrochloride

(3aR,6aS)-2-nitroso-octahydrocyclopenta[c]pyrrole

(3aR,6aS)-2-oxo-hexahydrocyclopenta[d][1,3]dioxole-5-carboxylic acid

(3aR,6aS)-2-[(4-methoxyphenyl)methyl]-octahydropyrrolo[3,4-c]pyrrole

(3aR,6aS)-2-[(tert-butoxy)carbonyl]-octahydrocyclopenta[c]pyrrole-3a,6a-dicarboxylic acid

(3aR,6aS)-3a,6a-dimethyl-hexahydro-1H-2lambda6-thieno[3,4-c]pyrrole-2,2-dione hydrochloride

(3aR,6aS)-3a,6a-dimethyl-hexahydro-1H-furo[3,4-c]pyrrole hydrochloride

(3aR,6aS)-3a,6a-dimethyl-hexahydro-1H-thieno[3,4-c]pyrrole hydrochloride

(3aR,6aS)-5,5-difluoro-octahydrocyclopenta[c]pyrrole hydrochloride