4-Ethoxybenzoyl Chloride → 4-chloro-1-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl)-indol-3-yl 4-ethoxyphenyl ketone

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4-Chloro-1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-indole obtained in Example 1-(3) and 4-ethoxybenzoyl chloride were treated in a manner similar to Example 2-(4) to give 4-chloro-1-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-indol-3-yl 4-ethoxyphenyl ketone as a colorless powder. APCI-Mass m/Z 630/632 (M+H). 1H-NMR (DMSO-d6) δ 1.37 (t, J=7.0 Hz, 3H), 1.69 (s, 3H), 1.98 (s, 6H), 2.04 (s, 3H), 4.11-4.12 (m, 2H), 4.14 (q, J=7.3 Hz, 2H), 4.28-4.32 (m, 1H), 5.29 (t, J=9.7 HZ, 1H), 5.54 (t, J=9.5 Hz, 1H), 5.71 (t, J=9.2 Hz, 1H), 6.32 (d, J=9.0 Hz, 1H), 7.04 (d, J=8.8 Hz, 2H), 7.25 (d, J=7.5 Hz, 1H), 7.35 (t, J=8.0 Hz, 1H), 7.79 (d, 1H), 7.99 (d, J=8.8 Hz, 2H), 8.07 (s, 1H).

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