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Neue β-Lactam-Antibiotika. Über die Darstellung der «7-Aminocephalocillansäure». Modifikationen von Antibiotika, 4. Mitteilung [1]

✍ Scribed by R. Scartazzini; H. Peter; H. Bickel; K. Heusler; R. B. Woodward


Publisher
John Wiley and Sons
Year
1972
Tongue
German
Weight
753 KB
Volume
55
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

‘7‐aminocephalocillanic acid’ 1, an intermediate for the preparation of new β‐lactam antibiotics was prepared by transforming the β‐lactam carbinol 2a to the phosphorane 9a through several steps. Oxydation of 9a with DMSO/Ac~2~O led directly to the cyclized ester 11a, which has been converted into 1 by known methods.


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