Five-Membered 2,3-Dioxo Heterocycles: LXXXIX.* Reaction of Methyl 1-Aryl-3-cinnamoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole- 2-carboxylates with (E)-4-Arylaminopent-3-en-2-ones. Crystalline and Molecular Structure of 9-Acetyl-4-cinnamoyl- 3-hydroxy-1-(4-methoxyphenyl)-8-methyl-7-phenyl- l,7-diazaspiro[4.4]nona-3,8-diene-2,6-dione

摘要

Methyl 1-aryl-3-cinnamoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates reacted with 4-ben-zylamino- and 4-arylaminopent-3-en-2-ones to give 1-aryl-7-benzyl- and 1,7-diaryl-9-acetyl-4-cinnamoyl-3-hydroxy-8-methyl-1,7-diazaspiro[4.4]nona-3,8-diene-2,6-diones. The crystalline and molecular structures of 9-acetyl-4-cinnamoyl-3-hydroxy-1-(4-methoxyphenyl)-8-methyl-7-phenyl-1,7-diazaspiro[4.4]nona-3,8-diene-2,6-dione were studied by X-ray analysis.