Parasiticidal new substituted thienopyranones

US5095032A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Heinz-Jurgen Bertram · Holzminden, DE
• Nikolaus Muller · Monheim, DE
• Achim Harder · Leverkusen, DE

Key dates

• Filing date: Jul 19, 1990
• Grant date: Mar 10, 1992
• Expiry date: Jul 19, 2010

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61P33/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Parasiticidal new substituted thienopyranones of the formula ##STR1## in which X represents O or S, PA1 R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, CN, NO.sub.2, alkyl, aralkyl, aryl, alkylcarbonyl or alkoxycarbonyl, or, together with the adjacent C atoms, form a carbocyclic ring which is optionally interrupted by heteroatoms, PA1 R.sup.3 represents optionally substituted alkyl or phenyl, PA1 R.sup.4 represents hydrogen or alkyl, PA1 R.sup.3 and R.sup.4, together with the adjacent nitrogen atom, represent a heterocyclic 5- or 6-membered ring. Some of the intermediates for making them are also new.