Tetrahedron Letters p. 3325 - 3328 (1995)
Update date:2022-08-02
Topics:
Witschel, Matthias Christian
Bestmann, Hans Juergen
The first total synthesis of optically active petasine 1 and isopetasine 2 succeeded by applying an annelation reaction, based on the reaction of cyclic δ-ketocarboxylic acids with N-phenyliminoketenylidenetriphenylphosphorane. 1 and 2 are biologically ac
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