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Communication | Regular issue | Vol 14, No. 1, 1980, pp.1-2
Published online, 1st January, 1970
DOI: 10.3987/R-1980-01-0001
Spiropenicillins. Synthesis of a New Spiro(1,2,4-triazino)-3,6’-penicillin

Piero Bellani, Paolo Ventura, and Giorgio Pifferi*

*Laboratories for Biomedical Research, ISF, Trezzano s/N, Milan, Italy


Acylalion of 6β-amino-6α-methoxypenicillanate (3) with the α-hydrazinoacid chloride (2), afforded the new spirotriazinopenicillin (1a). This unusual ring formation might proceed via an acylimino intermediate.