1-carboxymethoxy acetidinones and their production

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

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540355, 549549, 560150, 560159, 562564, A61K 31425, C07D20508, C07D41712, C07D30348

Patent

active

047941081

ABSTRACT:
A 2-azetidinone derivative having a group of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom, alkyl, aryl or arylalkyl which may have a substituent at the 1-position and an amino group, at the 3-position, which may be acylated or protected, its salt or ester, and methods of producing the same, (1) a method comprising subjecting a 2-azetidinone derivative having a group of the formula ##STR2## wherein the symbols are as defined above at the 1-position and an amino group at the 3-position, its salt or ester to an acylation or protective-group introduction reaction, and (2) a method comprising reacting a 2-azetidinone derivative having a hydroxy group at the 1-position and an amino group, at the 3-position, which may be acylated or protected, or its salt with a compound of the formula ##STR3## wherein W is a halogen atom; other symbols are as defined above, its salt or ester. The above objective compounds are utilizable as excellent antimicrobial agents or as valuable intermediates for the synthesis of the same.

REFERENCES:
patent: 4548747 (1985-10-01), Zahler
patent: 4548751 (1985-10-01), Kimball
Atherton, Chem. Abs. 101,6897y (1984).
Woulfe et al., Chem. Abs. 102, 6001x (1984).

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