Hydrochloric Acid → (1R,2S,3R,5S)-3-[2-((R)-3-Amino-pyrrolidin-1-yl)-6-(2,2-diphenyl-ethylamino)-purin-9-yl]-5-(4-hydroxymethyl-pyrazol-1-yl)-cyclopentane-1,2-diol

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Reaction Steps

{(R)-1-[9-[(1R,2S,3R,4S)-2,3-dihydroxy-4-(4-hydroxymethyl-pyrazol-1-yl)-cyclopentyl]-6-(2,2-diphenyl-ethylamino)-9H-purin-2-yl]-pyrrolidin-3-yl}-carbamic acid tert-butyl ester (first step a) is dissolved in methanol (2 ml). (4 M) HCl in 1,4-dioxane (15 ml) is added and the reaction mixture is stirred at room temperature over night. The compound is purified by reverse phase column chromatography (Isolute™ C18, 0-100% MeCN in water—0.1% HCl). The compound is partitioned between DCM and saturated NaHCO3(aq). The organics are dried (MgSO4), filtered and reduced in vacuo to yield the title compound. MS (ES+) m/e 596.38 (MH+).

Provenance & Evidence