Methanol → HCID 25168568, compound

Participants

Reaction Steps

To a solution of 1-(5-chloro-4-(4-ethylbenzyl)-2-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)benzyloxy)propan-2-one (compound K) (3.7 mg, 0.0077 mmol) in dry THF (0.5 mL) was added NaBH4 (1.76 mg, 0.0045 mmol) with stirring under argon at room temperature. After the mixture was stirred for 20 min, anhydrous methanol was added dropwise, and the resulting mixture was stirred at 20° C. for 2 h, then quenched by addition of sat. NH4Cl. The mixture was extracted with EtOAc and the combined organic layers were washed with water, brine, dried over Na2SO4, filtered and concentrated to provide the crude product, which was purified by preparative TLC to yield 2.5 mg of the product. 1H-NMR (CD3OD, 300 MHz) δ 7.45 (s, 1H), 7.43 (s, 1H), 7.08 (s, 4H), 4.75-4.56 (m, 1H), 4.47 (dd, J=9.3 Hz, 3.3 Hz, 1H), 4.10 (d, J=14.8 Hz, 1H), 4.05 (d, J=14.8 Hz, 1H), 3.93-3.83 (m, 2H), 3.68-3.66 (m, 1H), 3.47-3.37 (m, 6H), 2.60 (q, J=7.8 Hz, 2H), 1.21 (t, J=7.8 Hz, 3H), 1.15 (d, J=7.8 Hz, 3H); LC-MS (m/z) 481 [(M+1)+], 525 [(M+45)−].

Provenance & Evidence