On the Preparation of Bilirubins of the Natural α Series Substituted with a Propionic Acid Residue and a Hydroxypropyl Group [1]

Article abstract of DOI:10.1007/BF00807412

The reduction of mesobiliverdin XIIIα propan-1,3-diyl diester with NaBH₄ affords mesobilirubin XIIIα propan-1,3-diyl diester. The same reduction of mesobiliverdin XIIIα methylen diester. The same reduction of mesobiliverdin XIIIα methylen diester affords 8-(2-carboxyethyl)-3,17-diethyl-12-(3-hydroxypropyl)-2,7,13,17- tetramethylbiladien-ac-1,9-(21H, 24H)-dione (MBR-mc). The UV/Vis and ¹H NMR spectra of MBR-mc show that its structure in solution is similar to that of the natural bilirubins of the α series.