1H-tetrazole derivatives

Details 1H-tetrazole derivatives 1H-tetrazole derivatives

1975-05-20

1978-04-18

Waddell, Frederick E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260268TR, 26029358, 42424856, 424250, 424256, 544126, C07D40114, A61K 31535, A61K 31495, A61K 31435

Patent

active

040851117

ABSTRACT:
1H-Tetrazole derivatives of the formula: ##STR1## and pharmaceutically acceptable salts thereof, wherein the ring P is pyridine ring; A is carbonyl, methylene or C.sub.2-4 alkylidene; Y is oxygen, sulfur or --N(R.sup.1)-- wherein R.sup.1 is hydrogen or C.sub.1-4 alkyl; each of X.sup.1 and X.sup.2 is hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl or substituted phenyl, any substitutent on the phenyl being halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or trifluoromethy; and R is hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.2-4 alkynyl, hydroxy-C.sub.1-4 alkyl, C.sub.1-4 alkoxy-C.sub.1-4 alkyl, carboxy-C.sub.1-4 alkyl, C.sub.1-4 alkoxycarbonyl-C.sub.1-4 alkyl or substituted or unsubstituted amino-C.sub.1-4 alkyl, any substituted amino being C.sub.1-4 alkyl- or di-C.sub.1-4 alkyl-amino, piperidino, 1-pyrrolidinyl, morpholino, 1-piperazinyl and 4-C.sub.1-4 alkyl-1-piperazinyl; are useful as antiallergic agents.

REFERENCES:
patent: 2977372 (1961-03-01), Finnegan et al.
patent: 3536715 (1970-10-01), Hayad et al.
patent: 3755319 (1973-08-01), Bays
patent: 3931199 (1976-01-01), Nakanishi et al.
patent: 3939173 (1976-02-01), Hodson et al.

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