Synthesis and .BETA.-adrenergic blocking activity of 2-(N-substituted amino)-1,2,3,4-tetrahydronaphthalen-1-ol derivatives.

Abstract
In a search for a new structural type of .beta.-adrenergic antagonist, a series of trans-2-(N-substituted amino)-1,2,3,4-tetrahydronaphthalen-1-ol derivatives (3-36) was synthesized in several steps from 3,4-dihydro-1(2H)-naphthalenone (37) having a variety of substituents at the 5-, 6-, 7- and 8-positions. Compounds 3-36 were tested in vitro for .beta.-adrenergic activity. Among them, 2-benzhydrylamino-6-chloro-1,2,3,4-tetrahydronaphthalen-1-ol (28c) showed a fairly potent .beta.-adrenergic blocking activity [in guinea pig atrium.].