“…The residue (51 g) was distilled and the fraction (21 g, 58%) boiling at 180-182°(0.15 mm) was collected. A 15-g (0.0415 mol) portion of this fraction was saponified with 37.5 g of 87% KOH, 150 ml of EtOH, and 37.5 ml of H20 at reflux temperature for 3 hr to give, after a crystallization of the acidic product from hexane, 8.6 g (68%) of 43 (R -H): mp 99-100°; NMR (CDCls) 2.5-3.0 (m, 4 ), 3.1-3.7 (m, 1 H), 3.7 (s, 3 H), 6.67 (d, 1 H, J = 9 Hz), 6.95 (d of d, J = 3, 9 Hz), 7.2 (br s, 6 H), 11.5 (br s, 1 H). Anal.…”