Tetrahedron Letters p. 2499 - 2502 (1987)
Update date:2022-08-02
Topics:
Boger, Dale L.
Patel, Mona
The total synthesis of prodigiosin (1), possessing the characteristic pyrrolylpyrromethene skeleton of a class of naturally-occuring polypyrroles, is detailed.The approach is based on the application of an inverse electron demand Diels-Alder reaction of dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate in a 1,2,4,5-tetrazine -> 1,2-diazine -> pyrrole strategy for preparation of prodigiosin pyrrole ring B and the subsequent implementation of an intramolecular palladium(II)-promoted 2,2'-diaryl (2,2'-bipyrrole) coupling for construction of the prodigiosin 2,2'-bipyrrole AB ring system.
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Doi:10.1021/ja01057a038
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