Transformations of penicillin. Part 8. Preparation of 2-acetylceph-3-em derivatives from carboxy-protected penicillin S-oxides

…, AGM Barrett, DHR Barton, M Girijavallabhan…

文献索引：de Oliveira Baptista; Barrett; Barton; Girijavallabhan; Jennings; Kelly; Papadimitriou; Turner; Usher Journal of the Chemical Society. Perkin transactions 1, 1977 , # 12 p. 1477 - 1500

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被引用次数: 1

摘要

Carboxylic acids were protected by formation of acylhydrazine or acylhydrazone derivatives. The influence of-substitution on the ease of carboxylic acid regeneration by oxidation under mild conditions is described. Such hydrazine derivatives have been applied in protecting the 3-and 4-carboxy-functions of substit