Ultrasound assisted reductive cleavage of eudesmane and guaiane γ-enonelactones. Synthesis of 1α,7α,10αH-guaian-4,11-dien-3-one and hydrocolorenone from santonin

1. Blay, G.
2. Bargues, V.
3. Cardona, L.
4. García, B.
5. Pedro, J.R.