ethyl 1-benzoyl-4-oxopiperidine-3-carboxylate
8-benzoyl-1,4-dioxa-8-aza-spiro[4.5]decane-6-carboxylic acid ethyl ester
6-acetyl-8-benzoyl-1,4-dioxa-8-aza-spiro[4.5]decane
8-benzoyl-6-(1-hydroxyimino-ethyl)-1,4-dioxa-8-aza-spiro[4.5]decane
N-(spiro[1,3-diaza-bicyclo[3.3.1]non-2-ene-6,2'-[1,3]dioxolan]-2-yl)-toluene-4-sulfonamide
N-(4-methyl-spiro[1,3-diaza-bicyclo[3.3.1]non-2-ene-6,2'-[1,3]dioxolan]-2-yl)-toluene-4-sulfonamide
N-(3-methyl-spiro[1,3-diaza-bicyclo[3.3.1]nonane-6,2'-[1,3]dioxolan]-2-ylidene)-toluene-4-sulfonamide