[CH2:1]([O:4][N:5]([C:16]([CH3:19])([CH3:18])[CH3:17])[C:6]([CH3:15])([CH3:14])[C:7]([NH:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[CH:2]=[CH2:3].[C:20](N(C(C)(C)C(NC(C)(C)C)=O)O)(C)(C)C.C(Cl)C(=C)C>>[CH2:1]([O:4][N:5]([C:16]([CH3:19])([CH3:18])[CH3:17])[C:6]([CH3:15])([CH3:14])[C:7]([NH:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[C:2](=[CH2:20])[CH3:3]The compound is prepared in analogy to compound (204) from tert-butyl-(dimethyl-tert-butylaminocarbonyl-methyl)-hydroxylamine and methallylchloride in 84% yield as colorless oil.
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