Synthesis and photoisomerisation of 2, 3, 17, 18, 22??pentamethyl??10, 23??dihydro??1, 19??[21H, 24H]??bilindione, an unsymmetrical bilirubin model compound

JA de Groot, R van der Steen…

Index: Groot, J. A. de; Steen, R. van der; Fokkens, R.; Lugtenburg, J. Recueil: Journal of the Royal Netherlands Chemical Society, 1982 , vol. 101, # 6 p. 219 - 223

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Citation Number: 2

Abstract

Abstract The unsymmetrical bilirubin model compound 2, 3, 17, 18, 22-pentamethyl-10, 23- dihydro-1, 19-[21H, 24H]-bilindione 1c has been prepared in good yield. Irradiation of 1c leads to a photostationary state which contains three photoproducts in addition to the starting material. The photoproducts have been isolated and fully characterized as the three possible geometric isomers of 1c. Short irradiation of each of the photoisomers shows that ...