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:
May. 13, 1986
Filed:
Nov. 09, 1984
Angelos N Sagredos, Hamburg, DE;
Vassilios P Papageorgiou, Panorama/Thessaloniki, GR;
Antonius S Mellidis, Salonica, GR;
NATEC, , DE;
Abstract
The invention relates to platinum complexes of the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 represent alkyl radicals with 1 to 18 carbon atoms, or R.sub.1 or R.sub.2 represent a hydrogen atom and R.sub.2 or R.sub.1 can represent an alkyl radical or a ##STR2## in which R.sub.3 is a hydrogen atom or the ##STR3## radical or an acyl radical, and x=1 or 2. These compounds can be produced by reaction of an alcohol solution of a 5,8-dihydroxyl-1,4-naphthoquinone of the following formula: ##STR4## in which the substituents R.sub.1 and R.sub.2 have the aforementioned meanings, in the presence of a concentrated aqueous ammonia solution, which adjusts the pH over 7, with K.sub.2 PtCl.sub.4 at room temperature. These platinum complex compounds are characterized by a good antitumor effect with low toxicity.