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US 4,071,527 AGranted
Certain benzothiazole compounds
AssigneeFujisawa Pharmaceutical Co., Ltd.
InventorsTakashi Kamiya, Tsutomu Toyonaka Teraji, Masashi Hashimoto, Teruo Kyoto Oku, Osamu Nakaguti, Yoshihisa Saito, Hitoshi Nakamura
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Abstract
An oxazetidine derivative compound of the formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted amino radical and R.sub.3 represents a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and --SR.sub.2 is a residue of a thiophilic sulphur nucleophile.
Claims18
An oxoazetidine derivative compound of the formula:
- ##STR19## wherein R.sub.1 represents cyano(lower)alkanoylamino, phenyl(lower)alkanoylamino, phenoxy(lower)alkanoylamino, phenyl(lower)alkanoylamino substituted by lower alkoxycarbonylamino, phenyl(lower)alkanoylamino substituted by trihalo(lower)alkoxycarbonylamino, hydroxyphenyl(lower)alkanoylamino substituted by lower alkoxycarbonylamino, thienyl(lower)alkanoylamino, sydononyl(lower)alkanoylamino or lower alkoxycarbonyl(lower)alkylideneamino, R.sub.3 represents carboxy, lower alkyl ester, trihalo(lower)alkyl ester, phenyl(lower)alkyl ester wherein phenyl is substituted by hydroxy and two lower alkyl groups or ester with acetoxime and wherein "lower" refers to from 1 to 5 carbon atoms.
Dependencies are inferred from the claim text.