| 摘要 |
A (1H-tetrazol-5-yl) tetrazolo [1,5-a -quinoline of formula (I) and its pharmaceutically nontoxical salt is prepd. by reacting a halocyano-cpd. of formula (II) with sodium azide and NH4Cl in an inert solvent. In the formulas, Tet=divalent tetrazolo gp.; A= -CH= or -N=; n= 0,1 or 2; X= H, C1-4 alkyl, C1-4 alkoxy, halogen, methylmercapto or methylsulfonyl; two X form methylenedioxy together; Z= -N=C(Hal)-(Hal= Cl or Br). (I) is useful for treating allergic diseases.
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