反应详情

To a solution of (9-methyl 13-isobutyl-2,2-dimethyl-4,11,14-trioxo-3-oxa-5,12,15-triazaheptadecan-17-oate (6w) in THF was added a solution of LiOH.H2O in water at room temperature. After 3 h, the reaction mixture was concentrated, diluted with water and acidified with a 1N aqueous solution of HCl to about pH 4-5. The mixture was stirred for 15 min and the white precipitate formed was filtered off, rinsed with water, and dried to afford (S)-13-isobutyl-2,2-dimethyl-4,11,14-trioxo-3-oxa-5,12,15-triazaheptadecan-17-oic acid (7w).

1. concentrationthe reaction mixture was concentrated
2. additiondiluted with water
3. customthe white precipitate formed
4. filtrationwas filtered off
5. washrinsed with water
6. customdried