[C:1]([O:5][C:6](=[O:16])[CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][C:13]([OH:15])=[O:14])([CH3:4])([CH3:3])[CH3:2].[B-](F)(F)(F)F.CN(C(O[N:30]1[C:35](=[O:36])[CH2:34][CH2:33][C:31]1=[O:32])=[N+](C)C)C.CCN(C(C)C)C(C)C>C1COCC1>[O:32]=[C:31]1[CH2:33][CH2:34][C:35](=[O:36])[N:30]1[O:14][C:13](=[O:15])[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:16]Octanedioic acid mono-tert-butyl ester (3.14 g, 13.63 mmol) was dissolved in THF (100 mL). TSTU (4.9 g, 16.3 mmol) was added and pH was adjusted to 8.5 with DIPEA (2.85 mL).
Wird geladen…