Pyridine, 3-(4-aminobutyl)- → (Z)-5,5-bis(3-methoxyphenyl)-N-[4-(3-pyridinyl)-butyl]-2,4-pentadienamide

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Reaction Steps

As in Example 134, a solution of (Z)-5,5-bis(3-methoxyphenyl)-2,4-pentadienoic acid 4-nitrophenyl ester (1.2 g) and 3-pyridinebutanamine (0.42 g) in tetrahydrofuran (7 mL) was stirred at room temperature for 1 hour. The crude amide that had been isolated in the usual way, was contaminated with a minor amount of the (E)-isomer. The mixture was separated by HPLC (ethyl acetate) and the desired product was crystallized from ether (2x) to yield 0.48 g of (Z)-5,5-bis(3-methoxyphenyl)- N-[4-(3-pyridinyl)-butyl]-2,4-pentadienamide mp 69°-73° C. Anal. Calculated for C28H30N2O3 : C, 75.99; H, 6.83; N, 6.33 Found: C, 75.79; H, 6.70; N, 6.39.

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