Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
The Chemistry of Lactim Ethers. IV. Syntheses of 1, 9-and 5, 9-Diazasteroid Systems
HIROKI TAKAHATA, MINORU ISHIKURA, KATSUMASA NAGAI, MASANORI NAGATA, TAKAO YAMAZAKI
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Keywords: 5, 9-diazasteroid
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1981 Volume 29 Issue 2 Pages 366-369

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Abstract
The reaction of methyl valerolactim (1) with cyclic β-aminoester (6) afforded only 1, 9-diazasteroid (14), whereas that of methyl valerothiolactim (2) with 6 led to the cyclic diamide (12) together with 14. The latter reaction, followed by iodination and reduction, gave 5, 9-diazasteroid (17).
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© The Pharmaceutical Society of Japan
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