Title: Novel penicillanic acid

Abstract: Penicillanic acid derivatives of the formula ##STR1## wherein E is selected from the group consisting of hydrogen, a salt forming cation, and an ester forming residue which is known to improve the absorption characteristics of penicillanic compounds after oral administration to humans or animals, and Y is a group of the formula ##STR2## wherein Z.sub.1 and Z.sub.2 are individually selected from the group consisting of lower alkoxy, optionally substituted phenoxy, optionally substituted benzyl and benzyloxy group, optionally substituted lower alkyl, optionally substituted phenyl, hydroxy and -OM wherein M represents a salt forming cation, and hydrates of the said salts having antibacterial properties and their preparation and novel intermediates.

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Inventors: Bruynes, Cornelis Adrianus (Koudekerk an den Rijn, NL)
Van der Drift, Johannes Karel (Delft, NL)

Application Number: 624276
Filing Date: 1975-10-20
Publication_date: 1978-01-10
Assignee: Gist-Brocades N.V. (Delft, NL)
Primary Class(es): 514/80 540/308, 987/141, 987/169, 987/193, 987/368
Other Classes:
US Patent Ref:

3558601	Jan, 1971	Ekstrom et al.	260/239.
3674776	Jul, 1972	Long et al.	260/239.
3923787	Dec, 1975	Clayton et al.	260/239.
3935189	Jan, 1976	Fenes et al.	260/239.
3939149	Feb, 1976	Konig et al.	260/239.
3945994	Mar, 1976	Bruynes et al.	260/239.

Other Refs: 2,405,894

Sep, 1974	DT

Primary Examiner: Schwartz, Gerald A.
Assistant Examiner:
Attorney: Hammond & Littell