The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1988
Filed:
May. 20, 1986
Atsushi Takagi, Tokyo, JP;
Masao Yajima, Tokyo, JP;
Toshiaki Kikuchi, Tokyo, JP;
Masaki Saeki, Matsudo, JP;
Tokyo Tanabe Co. Limited, , JP;
Abstract
Benzo[ij]quinolizine-2-carboxylic acid derivatives of the general formula [I] and the salts, and their hydrates are provided: ##STR1## wherein A is a methylene group and B is a carbonyl group when A and B are linked by a single bond, or A and B unite together to form a vinylene group when A and B are linked by a double bond, R.sup.1 is a hydrogen atom, a C.sub.1-3 alkyl group or a 2-hydroxyethyl group, R.sup.2 and R.sup.3 are hydrogen atoms, methyl groups or ethyl groups and may be identical to or different from each other, R.sup.3 may be attached to the same carbon atom as R.sup.2, R.sup.4 is a methyl or ethyl group, and X is a halogen atom. The benzo[ij]quinolizine-2-carboxylic acid derivatives and the salts, and their hydrates have good adsorbability from the digestive tract into the circulating blood and exhibit excellent and long-lasting antibacterial activity.