Craig A. McGowan, Ann-Kathrin Schmieder, Lee Roberts and Michael F. Greaney
Org. Biomol. Chem., 2007,5, 1522-1524
DOI:
10.1039/B704865C,
Communication
The A–B hydrazulene ring system of the guanacastepenes has been synthesised using a photochemical ring transposition of a 6–6 bicycle.