| 摘要 |
Benzothiopyran-2-one cpds. of formula (I) are new. In (I) R and R1 together are O, or R is OH and R1 is H, or R1 is H and R and AR' are joined to complete a tetrahydronaphthyl ring. When it is not joined to R, AR' is opt.substd. phenyl or is thienyl AR is biphenyl or phenoxyphenyl, and is opt. halogen-substd. - Specifically claimed is 3-(3-(4'-bromo-4-biphenyl) 1,2,3,4-tetra-hydronaphthyl-1) benzothiopyran-2-one. 4-hydroxy-2H(1) -.
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