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:
Dec. 03, 1996
Filed:
Jun. 28, 1994
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
A compound useful for central antioxidant having inhibitory activity of degeneration and necrocytosis of cerebral cells of the formula (I): ##STR1## wherein A and B are independently (1) a group of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen atom, an optionally substituted hydrocarbon residue or an optionally substituted heterocyclic group, or R.sub.1 together with R.sub.2 and the nitrogen atom to which they are bound may form a cyclic amino group, provided that both R.sub.1 and R.sub.2 are not hydrogen atom at the same time, or (2) a group of the formula: ##STR3## wherein D is O or S, R.sub.3 is hydrogen atom, an optionally substituted hydrocarbon residue or an optionally substituted acyl group, m is 1, 2, or 3 and n is 0, 1, 2, 3 or 4;