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Syntheses of the potent angiotensin converting enzyme inhibitor (3S)-1-(carboxymethyl)-3-[[(1S)-1-carboxy-3-phenylpropyl]amino]- 2,3,4,5-tetrahydro-1H-[1]benzazepin-2-one (4b; CGS 14831) and the related monoester prodrug (17a; CGS 14824A) are described together with preparative details for six- and eight-membered ring analogues. Inhibitory potencies and in(More)
The preparation of a series of 3-amino-2-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine-1-acetic acid derivatives 5a-y by reductive amination of 2,3,4,5-tetrahydro-1H-1-benzazepine-2,3-dione (7) with L-amino acid derivatives is described. The compounds were tested for inhibition of angiotensin converting enzyme. The structure-activity profile of the series is(More)
The synthesis of two thiophene-containing analogues of mianserin, i.e., 1,2,3,4,10,13b-hexahydro-2-methylpiperazino[1,2-a]thieno[2, 3-c][1]benzazepine (2), and the corresponding [3,2-c] isomer (12) is described. The key step in the synthesis is the nucleophilic aromatic substitution reaction of the N-lithio derivative of 1-methyl-3-(2-thienyl)piperazine (4)(More)
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