Ammonia methanol → HCID 66953593, compound

Participants

Reaction Steps

The product from Example 6.7 (0.19 g, 0.435 mmol) was stirred in 7M NH3-MeOH (25 ml) for 24 h in a sealed tube at 135° C. (oil bath). After cooling to rt the solvent was evaporated and the residue chromatographed on silica gel (CH2Cl2-7M NH3-MeOH 96.5:3.5 then 95:5) to give (2R,3S)-2-((4-amino-5-(benzyloxymethyl)-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methylamino)-4-(methylthio)butane-1,3-diol (0.108 g, 60%) as a yellow gum. 1H NMR (CD3OD) δ 8.17 (s, 1H), 7.46 (s, 1H), 7.28 (m, 5H), 5.63 (s, 2H), 4.57 (s, 2H), 4.07 (d, J=13.7 Hz, 1H), 3.91 (d, J=13.7 Hz, 1H), 3.81-3.73 (m, 2H), 3.64 (dd, J=11.4, 5.0 Hz, 1H), 2.81-2.69 (m, 2H), 2.54 (dd, J=13.5, 7.4 Hz, 1H), 2.04 (s, 3H). 13C NMR (CD3OD, referenced to the centre line of CD3OD at 49.0 ppm) δ 152.8, 151.5, 149.4, 137.8, 133.6, 129.5, 129.3, 129.2, 116.2, 115.1, 78.6, 71.4, 71.3, 62.1, 62.0, 42.0, 39.3, 16.0. +ESMS Found 418.1907 (M+H)+ C20H28N5O3S requires 418.1913.

Provenance & Evidence