L-idaric acid
saccharic acid 1,4-lactone
(4S,4aR,8S,8aR)-Tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxine-4,8-dicarboxylic acid dicyclohexyl ester
(4S,4aR,8S,8aR)-Tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxine-4,8-dicarboxylic acid diphenyl ester
(4S,4aR,8S,8aR)-Tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxine-4,8-dicarboxylic acid dimethyl ester