Synthesis of Terpenoids. II. A New Total Synthesis of β-Cuparenone

References

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• Intermediate cyclopropyl alcohol 4a is a crystalline solid, mp 70 (ether‐hexane); ir (KBr) 3.07, 12.19 μ; nmr δ (CCl4) 0.77 and 1.06 (2s, 3H each, (CH3)2C, 2.33 (s, 3H, Ar‐CH3), 4.66 (m, 1H, CH‐OH), 7.10 (s, 4H, Ar‐H); ms (70 eV, rel. intensity) m/e 216 (parent peak, 5 %), 198 (41 %), 183 (100 %)
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• This investigation was partially supported by a grant from the Cámara Nacional de la Industria de Productos Quimico‐Farmacéuticos
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