Tetrahedron letters

Syntheses of fenanthroviridone, gilvocarcin BE-12406X 2, and antibiotic ws 5995b based on the palladium and copper catalyzed coupling of organostannanes with …

Ó de Frutos, AM Echavarren

Index: De Frutos, Oscar; Echavarren, Antonio M. Tetrahedron Letters, 1996 , vol. 37, # 49 p. 8953 - 8956

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Citation Number: 18

Abstract

5a: Red solid; mp > 300 °C; 1 H NMR (200 MHz, DMSO-d 6 ) δ 12.12 (br s, 2H), 8.28 (s, 1H), 7.78 (d, J = 8.1 Hz, 1H), 7.76 (s, 1H), 7.46 (t, J = 8.1 Hz, 1H), 7.46 (s, 1H, overlaps with the t), 6.90 (d, J = 7.6 Hz, 1H), 4.06 (s, 3H), 2.47 (s, 3H); 13 C NMR (50 MHz, DMSO-d 6 ) δ 161.0, 160.1, 157.5, 155.2, 139.9, 138.0, 128.6, 126.0, 122.7, 122.0, 121.8, 118.9, 117.0, 114.4, 110.8, 110.0, 104.7, 56.4, 21.5. EI-MS m/z 322 (M + , 100). ... 6:Red solid; mp > 300 °C ...