“…)], 34.87 )] and 31.49 (CMe,); m/z 372 (M', loo%), 357 (29), 342 (2), 326 (8), 301 (lo), 270 (lo), 269 (1 l), 241 (7), 168 (6), 69 (7), 57 (44) and 41 (17) [PTLC developer: dichloromethane-hexane (4: l)], m.p. 120-121.5 "C (from MeOH), v,,,(CHCl,)/cm~ ' 3534,2947, 2345, 1273, 1126, 756 and 609; A,,,(MeOH)/nm 207.5 (&/dm3 mol-' cm-' 29 136) and 276 (5702); 6,7.43-7.19 (2 H, m, 4'-and 6'-H), 7.15 (1 H,d,J1.87,6-H),7.08-6.95(2H,m,3'-and5'-H),6.89(1H,d, J1.83,4-H),4.40(1 H,s,OH), 3.75(3H,s,2'-OMe), 1.34(9H,s, 5-Bu') and 1.14 (9 H,s,6,, )], 34.81 )], 31.94 )] and 31.37 )]; m/z 313 (M+ + 1,25%), 312 (loo), 297 (62), 241 (61), 226 (21), 131 (1 l), 105 (12), 57 (87) and 40 (90) (Found: C, 3,phenoll9. [PTLC developer: dichloromethane-hexane (4 : l)], m.p.…”