Journal of the American Chemical Society p. 2645 - 2651 (1984)
Update date:2022-09-26
Topics:
Schoenleber, Robert W.
Kim, Youseung
Rapoport, Henry
The synthesis and characterization, including the stereochemistry, of a series of 3,4-dihydropyrromethenones and 2,3-dihydrodioxobilins are described.High-resolutions 1H NMR spectral analysis allows the determination of the A ring coupling constants for a series of cis and trans model compounds.From these data and correlations, the relative stereochemistry in the A ring of phycocyanin and similar bile pigment structures can be concluded.
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