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6,16-methano-6H,16H-[2,4]benzothiazepino[3,4-d][1,3,5]benzoxadiazocine and 6,26:13,19-dimethano-6H,9H,13H,19H,22H,26H-benzo[1″,2″:5,6;4″,5″:5′,6′]bis[1,3]thiazepino[2,3-d:2′,3′-d]bis[1,3,5]-benzoxadiazocine: New heterocyclic systems

✍ Scribed by Jan Světlík; Tibor Liptaj

Publisher: Journal of Heterocyclic Chemistry
Year: 1999
Tongue: English
Weight: 445 KB
Volume: 36
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570360432

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✦ Synopsis

Abstract

Cyclization reactions of oxygen‐bridged pyrimidinethione 1a with 1,2‐bis(bromomethyl)benzene and 1,2,4,5‐tetrakis(bromomethyl)benzene leading to conformationally restricted benzothiazepine derivatives were examined. Molecular conformations of the products were studied by 1D and 2D nmr spectroscopy and with the help of semiempirical calculations.

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