C(O[C:4]([C:6]1([CH2:19][CH2:20]OC)[CH2:11][CH2:10][N:9](C(OC(C)(C)C)=O)[CH2:8][CH2:7]1)=[O:5])C.[Cl-].C[Al+]C.[CH2:27]([C:29]1[CH:34]=[CH:33][C:32]([NH2:35])=[CH:31][CH:30]=1)[CH3:28]>CCCCCC>[CH2:27]([C:29]1[CH:34]=[CH:33][C:32]([N:35]2[CH2:20][CH2:19][C:6]3([CH2:7][CH2:8][NH:9][CH2:10][CH2:11]3)[C:4]2=[O:5])=[CH:31][CH:30]=1)[CH3:28]This material was prepared in analogy to example 251 step A) from 4-(2-methoxy-ethyl)-piperidine-1,4-dicarboxylic acid 1-tert-butyl ester 4-ethyl ester, dimethylaluminium chloride in hexane and 4-ethyl-phenylamine, with concomitant cleavage of the Boc protecting group under the conditions. MS (ESI): 259.1 (MH+).
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