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4-[2-(2-benzyloxy-3-pyridyl)ethyl]benzoic acid (0.48 g, 1.44 mmol) and 2-aminomethylpyridine (0.189 g, 1.748 mmol) were dissolved in DMF (20 ml) and cooled to 0° C. Triethylamine (0.15 g, 1.5 mmol) was added followed by diphenylphosphorylazide (0.41 g, 1.48 mmol). The reaction mixture was stirred under argon and allowed to warm to ambient temperature overnight. The reaction was partitioned between EtOAc/water, the organic phase was washed with aqueous sodium bicarbonate, water, dried (MgSO4) and evaporated. The residue was purified by flash chromatography (MeOH/CH2Cl2) followed by recrystallisation from EtOAc/hexane and then from EtOH/water to give the title product.

1. temperatureto warm to ambient temperature overnight
2. customThe reaction was partitioned between EtOAc/water
3. washthe organic phase was washed with aqueous sodium bicarbonate, water
4. dry with materialdried (MgSO4)
5. customevaporated
6. customThe residue was purified by flash chromatography (MeOH/CH2Cl2)
7. customfollowed by recrystallisation from EtOAc/hexane