have been prepared from a tandemMichael–Henryreaction between cyclohexane-1,2-diones and nitroalkenes using a quinine-derived thiourea as the catalyst. Although four stereogenic centers were created during the reaction, only two diastereomers were obtained in good diastereoselectivity and high enantioselectivity (92–99% ee). When 3-methylcyclohexane-1,2-dione (R1=Me) was used as the substrate, only