“…Compound 9c was obtained as an oil, v,,,(NaCl)/cm-' 3550, 3050, 1610, 1175, 860 and 740; 6,(400 MHz) 7.83 (2 H, d, J 8.3, ArH),7.36(2H,d, J8.3,ArH),5.70(1 H,d, J6.6, 15-H), 5.63(1 H, d, J6.6, 16-H), 4.87 (1 H, s, 14-H), 3.88 (1 H, dd, J 3 . 2 and 2.45 (3 H, s, ArMe) and 0.87, 0.80 and 0.76 (3 H each, each s, 4-Me2 and 10-Mee); m/z 474 (M', 0.4%), 317 (3), 304 (8), 303 (34), 301 (8), 285 (34) and 173 (100);6, see Table 1. 2.5,7-H),3.50(1 H,d, J11.7, 17-H),3.46(1 H,d, J11.7, 17-H'), Beyer-l5-ene-7a, 17-diol[( -)-Benuol] 3.-A solution of tosyl ester 9c (20.7 mg, 0.04 mmol) in HMPA (0.5 cm3) was treated with sodium iodide (78.5 mg, 0.52 mmol) and zinc powder (68.5 mg, 1.05 mmol) as for compound 1, to give a crude reaction mixture, which was subjected to column chromatography, using hexane-ethyl acetate (9: 1) as eluent, to afford the beyerene benuol 3 (10.7 mg, 81%) as a solid, m.p. 116-117 "C (from hexane-CH,Cl,) (lit.,2d 114-1 16 "C);…”