Water → (+/-)-N-(3,4-dihydro-2H-1,5-benzodioxepin-7-ylmethyl)-N-isobutyl-3-(phenylamino)cyclopentanecarboxamide

関与物質

反応手順

The mixture of N-(9-chloro-3,4-dihydro-2H-1,5-benzodioxepin-7-ylmethyl)-2-methylpropan-1-amine (17 mg), 3-phenylaminocyclopentanecarboxylic acid (15 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (20 mg), and N,N-dimethyl-4-aminopyridine (12 mg) in 5 ml dichloromethane was stirred at room temperature overnight. After addition of water (5 mL), the mixture was extracted with ethyl acetate (10 ml×2). The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. Preparative thin layer chromatography on silica (33% ethyl acetate in hexane) gave the product as a resin: MS (m+1)=423.3; H NMR (500 MHz, CDCl3) 0.95 (m, 6H), 1.30 (m, 4H), 1.75 (m, 2H), 1.90 (m, 1H), 1.95 (m, 1H), 2.15 (m, 1H), 2.30 (m, 1H), 2.65 (m, 2H), 3.00 (m, 1H), 4.00 (m, 2H), 4.40 (m, 2H), 4.15 (m, 4H), 5.20 (s, 1H), 6.6-6.8 (m, 3H), 7.1-7.6 (m, 5H).

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