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Tamura; Atsushi
Kanagawa-ken, JP
No. of patents:

Patent Number Title Of Patent Date Issued
5990101 Carbapenem derivatives November 23, 1999
Novel carbapenem derivatives, represented by the following formula (I), having a substituted or unsubstituted imidazo[5,1-b]thiazolium-6-ylmethyl group at the 2-position are disclosed. The compounds represented by the formula (I) have potent antibacterial activity against a wide spectrum
5663162 Cephem derivatives September 2, 1997
Compounds represented by the following formula (I), that is, cephem derivatives having substituted or unsubstituted imidazo[5,1-b]thiazolium-6-yl as a substituent at the 3-position of the cephem ring: ##STR1## wherein X represents CH or N, R.sup.1 represents H, alkyl, alkenyl or

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