ChemInform Abstract: Five‐Membered 2, 3‐Dioxoheterocycles. Part 90. Reaction of 4, 5‐Bis(methoxycarbonyl)‐1H‐pyrrole‐2, 3‐diones with Enaminoesters. Crystal and Molecular Structure of 4‐Methyl 9‐Ethyl 7‐Benzyl‐3‐hydroxy‐8‐methyl‐1‐ (4‐methoxyphenyl)‐2, 6‐dioxo‐1, 7‐diazaspiro [4.4]nona‐3, 8‐diene‐4, 9‐dicarboxylate. Issue 17 (4th April 2013) - Silaichev, P. S.; Chudinova, M. A.; Slepukhin, P. A.; Maslivets, A. N.