“…A solution of NaOMe (81 mg, 1.50 mmol) in MeOH (60 ml) was saturated with MeSH, treated with a solution of 2 (874 mg, 2.00 mmol) in CHCI3 (20 ml), allowed to stand in a stoppered flask for 66 h, diluted with H20 (80 ml), and neutralized with Amberlite IR-120 H+ ion-exchange resin. The aqueous layer was washed with CHCI3 and evaporated to dryness in vacuo, and the residue was crystallized from EtOH and dried in vacuo (P2O5): yield 224 mg (50%); mp 150 °C; Xmax nm (t X 10-3) (EtOH) (0.1 N HC1) 226 (10.5), 304 (14.5), (pH 7) 226 (10.5), 303 (14.4); XH NMR 2.79 (s, 3, CH:;), 3.58 (m, 2, Hr-), 4.06 (m, 1, Hr), 4.39 (m, 1, H3), 4.83 (m, 2, OrH, H2), 5.27 (d, 1, 02H), 5.59 (d, 1, 3 ), 6.29 (d, 1, Jr 2 = 5.0 Hz, Hr), 8.97 (s, 1, Hr). Anal.…”