反应详情

Following the procedure as described in EXAMPLE 9 and making non-critical variations using 2-methylspiro[furo[2,3-f][1,3]benzothiazole-7,3′-indol]-2′(1′H)-one to replace 3-methylspiro[furo[3,2-f][1,2]benzisoxazole-5,3′-indol]-2′(1H)-one, and 2-(bromomethyl)pyridine hydrobromide to replace 2-(bromomethyl)-5-(trifluoromethyl)furan, 2-methyl-1′-(pyridin-2-ylmethyl)spiro[furo[2,3-f][1,3]benzothiazole-7,3′-indol]-2′(1H)-one was obtained (38%) as a colorless solid: mp 249-250° C. (ethyl acetate); 1H NMR (300 MHz, DMSO-d6) δ8.63-8.59 (m, 1H), 7.95 (d, J=8.6 Hz, 1H), 7.85-7.70 (m, 2H), 7.38-7.31 (m, 1H), 7.27-7.1 (m, 3H), 7.02-6.95 (m, 1H), 6.85 (d, J=7.8 Hz, 1H), 5.31 (d, J=16.9 Hz, 1H), 4.96-4.84 (m, 3H), 2.67 (s, 3H); 13C NMR (75 MHz, DMSO-d6) δ176.4, 170.2, 160.2, 155.7, 149.3, 148.5, 142.3, 137.0, 131.9, 128.8, 128.1, 123.4, 123.1, 122.7, 120.7, 119.5, 109.3, 108.4, 81.0, 57.4, 45.6, 20.1; MS (ES+) m/z 400.0 (M+1).