The synthesis of 3a, 3b, 7a and 7b from Benzothiazepinone and 1,4-dihyropyridine derivatives is described. Benzothiazepinone and 1,4-dihydropyridine derivatives were prepared according to literature procedure. The key reactions involve esterification and amidation of benzothiazepinone and 1,4-dihydropyridine derivatives.
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http://dx.doi.org/10.1007/BF02974235 | DOI Listing |
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