Bromotrimethylsilane → (4-((6-amino-2-(2-methoxyethoxy)-8-oxo-7H-purin-9(8H)-yl)methyl)benzyl)phosphonic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of diethyl 4-((6-amino-8-methoxy-2-(2-methoxyethoxy)-9H-purin-9-yl)methyl)benzylphosphonate (1 equiv.) in CH2Cl2 (0.10 M) at 0° C. was slowly added trimethylsilyl bromide (10 equiv.). After 1 h the ice-bath was removed and the reaction mixture was allowed to stir at 22° C. for 2 h. At this point the volatiles were removed in vacuo and the resulting residue was purified by Reverse Phase-HPLC using a 20-90% 0.5 mM NH4OAc (in MeCN) to 10 mM NH4OAc (in water) gradient to deliver the title compound (29%) as a solid.

Provenance & Evidence