3-(Methoxycarbonyl)benzeneboronic acid → HCID 57413727, compound

Participants

Reaction Steps

4b was prepared using the same procedure as for 5b with [(2R,3S,4S,5R,6R)-4,5-diacetoxy-6-(acetoxymethyl)-2-(4-bromo-2-chloro-phenoxy)tetrahydropyran-3-yl]acetate and 3-methoxycarbonylphenyl boronic acid as the reactants. It was further purified by HPLC (C18, 15*150 mm column; eluent: acetonitrile/water (0.1% TFA)). Yield: 43%. 1H NMR (300 MHz, METHANOL-d4) δ ppm 3.59-3.71 (m, 1H) 3.71-3.85 (m, 3H) 3.94 (s, 3H) 4.01 (dd, J=9.34, 3.30 Hz, 1H) 4.12 (dd, J=3.30, 1.92 Hz, 1H) 5.61 (d, J=1.65 Hz, 1H) 7.40-7.49 (m, 1H) 7.49-7.62 (m, 2H) 7.68 (d, J=2.20 Hz, 1H) 7.82 (ddd, J=7.76, 1.85, 1.10 Hz, 1H) 7.98 (dt, J=7.83, 1.30 Hz, 1H) 8.14-8.25 (m, 1H). MS (ESI): found [M+H]+, 425.1.

Provenance & Evidence