Reaction Steps
(1R,2S)-1-{[(cyclopropylsulfonyl)amino]carbonyl}-2-vinylcyclopropanaminium chloride 48 (prepared as described in WO 03/099274) (1.2 eq.) and HATU (1.2 eq.) were added to a 0.1M solution of (9R,11S,14S)-14-tert-butyl-13-oxo-8-oxa-12,15-diazatetracyclo[20.3.1.12,6.19,12]octacosa-1(26),2(28),3,5,22,24-hexaene-11-carboxylic acid 105 in DMF containing DIPEA (4.0 eq.). The reaction mixture was stirred at RT overnight. The reaction mixture was concentrated to dryness, dissolved in DMSO and purified by RP-HPLC (stationary phase: column WATERS XTERRA C18, 5 μm, 19×150. Mobile phase: MeCN/H2O buffered with 0.1% TFA from 30% to 90% of MeCN in 14 minutes, run time 18 minutes). Fractions containing the pure compound were combined and freeze dried to afford compound 142 (TFA salt) as an off white solid (30% over 4 steps). 1H NMR (400 MHz, DMSO-d6, 300 K) δ 10.65 (s, 1H), 8.89 (s, 1H), 8.65-8.49 (bs, 1H), 8.25-8.11 (bs, 1H), 7.62-7.56 (m, 2H), 7.51-7.38 (m, 4H), 7.31 (d, J 7.3, 1H), 7.24 (d, J 7.3, 1H), 5.69-5.53 (m, 1H), 5.24 (d, J 17.2, 1H), 5.14 (d, J 11.9, 1H), 4.71 (d, J 12.4, 1H), 4.61 (d, J 12.4, 1H), 4.31 (bt, 1H), 4.37 (bs, 1H), 4.16 (d, J 8.8, 1H), 4.04 (d, J 11.9, 1H), 3.79 (dd, J 11.5, 3.9, 1H), 3.00-2.91 (m, 1H), 2.91-2.81 (m, 1H), 2.80-2.68 (m, 2H), 2.22 (q, J 17.5, 8.8, 1H), 2.02-1.91 (m, 1H), 1.83-1.69 (m, 2H), 1.68-1.56 (m, 2H), 1.41-1.24 (m, 5H), 1.22-1.02 (m, 13H), 0.91 (t, J 7.3, 4H). MS (ES+) m/z 705 (M+H)+.
