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Srikrishna, A and Lakshmi, Vasantha B and Mathews, Manoj (2006) Construction of spiro[5.5]undecanes containing a quaternary carbon atom adjacent to a spirocentre via an Ireland ester Claisen rearrangement and RCM reaction sequence. Total syntheses of (±)-$\alpha$-chamigrene, (±)-$\beta$-chamigrene and (±)-laurencenone C. In: Tetrahedron Letters, 47 (13). pp. 2103-2106.