反应详情

By using an analogous procedure to that described in Example 2, tert-butyl (5S,12S)-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-methyl-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate (43 mg, 0.044 mmol, obtained from Example 14) was hydrogenated in methanol (1.5 ml) using 10% palladium on carbon (10 mg) to provide tert-butyl (2S,3R)-2-[(3-{[(2S)-2-aminopropanoyl]amino}propyl)amino]-3-[(3R,4R,5R)-3,4-bis{[tert-butyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]-3-hydroxypropanoate (35 mg, 94%) as a white amorphous solid.