反应详情

A solution of 1-(Toluene-4-sulfonyl)-1H-pyrrole-3-carboxylic acid (0.023 g, 0.085 mmol) in NMP (850 l) is added to PS-carbodiimide (190 mg of 1.3 mmol/g loading, 0.24 mmol), followed by a solution of 3,5-Diamino-6-chloro-pyrazine-2-carboxylic acid [1,3,8-triaza-spiro[4.5]dec-(2E)-ylidene]-amide dihydrochloride (Ex. 38) (0.08 mmol) and N-methyl morpholine (8 l, 0.08 mmol) in NMP (1 ml), and the resulting reaction mixture is shaken at room temperature. The reaction mixture is filtered and the resin is washed with NMP (1 ml). The collected filtrate is concentrated in vacuo and the residues are purified by mass-directed preparative HPLC. The purified fractions are evaporated under vacuum to afford the title compound; [M+H]+ 572.08

1. customthe resulting reaction mixture
2. filtrationThe reaction mixture is filtered
3. washthe resin is washed with NMP (1 ml)
4. concentrationThe collected filtrate is concentrated in vacuo
5. customthe residues are purified by mass-directed preparative HPLC
6. customThe purified fractions are evaporated under vacuum