Experimental A mixture of frani-2-(l-naphthyl)cyclohexanol (50 mg, 0.22 mmol), distilled 2-methyl-3-furoic acid (28 mg, 0.22 mmol), DCC (50 mg, 1.1 equivalents), DMAP (3 mg, 10 mol%) and PPTS (3 mg, 5 mol%) in dry CH 2 C1 2 (1 ml) was stirred at room temperature under a nitrogen atmosphere for 48 h. After adding more CH 2 C1 2 , the mixture was filtered through a silica pad, then washed with 5% HCI (10 ml). The organic phase was dried over MgSO 4 , then filtered and the solvent O804 Parvez, Hunt and Keay • C22H22Oj