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Synthesis and structure elucidation of new spirocephams

✍ Scribed by P. Bruneau; L.F. Hennequin; L. Quéré; M.C. Scherrmann; P.J. Siret

Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
243 KB
Volume
31
Category
Article
ISSN
0040-4039

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✦ Synopsis

Spirocephams 4 and S have been obtained from aldehyde 1 and hydroxylamine or hydrazine, as single diastereoisomers.

Structures of these compounds have been elucidated by NME experiments and FIND0 calculations.

In the course of a prograssne to design cephems modified at the 3 position, we condensed aldehyde L(l) with hydroxylamine and hydrazine and obtained spirocephams 4 and 3 respectively as single diastereoisomers(2).

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