N-(5-Chloro-2-methylphenyl)piperazine → (R)-1-(3-(4-Bromo-phenyl)-1-[3-[4-(5-chloro-2-methyl-phenyl)-piperazin-1-yl]-2-hydroxy-propyl]-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl)-ethanone

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Reaktionsschritte

(S)-1-[3-(4-Bromo-phenyl)-1-oxiranylmethyl-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanone (37 mg, 0.98 mmol) and 4-(2-methyl-5-chlorophenyl)piperazine (36 mg, 0.17 mmol) were combined in EtOH (0.4 mL) and heated to 70° C. After 18 h the mixture was allowed to cool, diluted with CH2Cl2 and purified by preparative TLC (silica, 8% MeOH/CH2Cl2) to give 35 mg (61%) the title compound. HPLC (reverse phase conditions): tR=4.41 min. MS (electrospray): m/z calculated for C28H3435Cl79BrN5O2 [M++H], 586.16, found 586.2. 1H NMR (CDCl3, 400 MHz, a mixture of amide rotamers): 7.56 (d (partially obscured), J=8.5, Hz, 2H), 7.53 (s, 4H), 7.48 (d, J=8.5 Hz, 2H), 7.08 (br d, J=8.5 Hz, 1H), 6.95 (m, 2H), 4.85 and 4.73 (A and B of AB quartet, Jab=15.6 Hz, 1H), 4.62 (s, 1H), 4.20 (m, 2H), 4.04 (m, 2H), 3.90-3.71 (m, 2H), 2.92-2.53 (m, 11H), 2.21 (s, 1.5H), 2.16 (s, 1.5H).

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