tert-Butyl 3-aminopropanoate → HCID 178451102, 화합물

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[C:1]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[N:18]=[C:17]([CH:22]=O)[CH:16]=[CH:15]3)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2].[NH2:24][CH2:25][CH2:26][C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28].C([BH3-])#N.[Na+]>ClC(Cl)C>[C:1]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[N:18]=[C:17]([CH2:22][NH:24][CH2:25][CH2:26][C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH:16]=[CH:15]3)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2]

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실험 절차

6-hydroxy-2-methylquinoline was treated with cis-4-tert-butylcyclohexanol under Mitsunobu conditions, affording 6-((trans)-4-tert-butylcyclohexyloxy)-2-methylquinoline, which in turn was oxidized with tert-butyl hydrogen peroxide and selenium dioxide in dioxane, providing 6-((trans)-4-tert-butylcyclohexyloxy)-2-formylquinoline. This aldehyde was then treated with t-butyl 3-aminopropionate and sodium cyanoborohydride in dichloroethane to afford t-butyl 3-(((6-((trans)-4-tert-butylcyclohexyloxy)-quinolin-2-yl)methyl)amino)propionate. Treatment with lithium hydroxide in methanol/THF gave the title compound, 3-((6-((trans)-4-tert-butylcyclohexyloxy)quinolin-2-yl)methylamino)propanoic acid.