<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Reduction of the title aminoquinolinediones (I) with NaBH<sub>4</sub> proceeds with excellent stereoselectivity furnishing cis‐3‐amino‐3, 4‐dihydro‐4‐hydroxyquinolinones (II) in high yield.</p> </abstract>