Methanol → 2-(3-{5-[5-(1-Amino-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl}-2-hydroxymethyl-phenyl)-6-tert butyl-8-fluoro-2H-phthalazin-1-one

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Reaction Steps

Acetic acid 2-{5-[5-(1-amino-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl}-6-(6-tert-butyl-8-fluoro-1-oxo-1H-phthalazin-2-yl)-benzyl ester (159 mg, 0.0255 mmol) was dissolved in dioxane (3 ml). 2 M lithium hydroxide monohydrate solution (0.76 ml, 1.53 mmol) was added and stirred for 3hr at r.t. MeOH was added and the mixture purified purified by chromatography. Isolated product was dried under high vacuum at 50° C. to give 2-(3-{5-[5-(1-Amino-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl}-2-hydroxymethyl-phenyl)-6-tert butyl-8-fluoro-2H-phthalazin-1-one (101 mg, 68%) as a off-white crystalline product. MS (H+)=583.3.

Provenance & Evidence