反应详情

Following the procedure as described in EXAMPLE 4 and making non-critical variations using 3-(bromomethyl)pyridine hydrobromide to replace 2-(bromomethyl)tetrahydro-2H-pyran, and spiro[furo[3,2-e][2,1,3]benzoxadiazole-8,3′-indol]-2′(1′H)-one to replace 5,6-dihydrospiro[benzo[1,2-b:5,4-b′]difuran-3,3′-indol]-2″(1′H)-one, 1-(pyridin-3-ylmethyl)spiro[furo[3,2-e][2,1,3]benzoxadiazole-8,3′-indol]-2′(1′H)-one was obtained (47%) as a colorless solid: mp 230-232° C.; 1H NMR (300 MHz, CDCl3) δ 8.74 (s, 1H), 8.59 (d, J=2.7 Hz, 1H), 7.88-7.82 (m, 2H), 7.39-7.16 (m, 4H), 7.04 (dd, J=7.5, 7.5 Hz, 1H), 6.80 (d, J=7.8 Hz, 1H), 5.35-5.24 (m, 2H), 4.99 (d, J=9.3 Hz, 1H), 4.84 (d, J=15.9 Hz, 1H); 13C NMR (75 MHz, CDCl3) δ176.1, 162.9, 149.4, 148.8, 148.3, 144.8, 141.7, 135.1, 130.8, 129.8, 129.7, 123.9, 121.8, 119.4, 109.6, 106.9, 81.9, 57.2, 42.0; MS (ES+) m/z 371.1 (M+1).