3-(1h-tetrazol-5-yl)thieno(2,3-d)pyrimidin-4(3h)-ones

C - Chemistry – Metallurgy – 07 – D

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260/242.5

C07D 495/04 (2006.01)

Patent

CA 1301153

ABSTRACT OF THE DISCLOSURE 3-(lH-Tetrazol-5-yl)thieno[2,3-d]pyrimidin-4(3H)-ones useful as antiallergic agents are described herein. The compounds are prepared by cyclization of an appropriate substituted amidine using an alkali metal base. The reac- tion is carried out in an appropriate inert solvent. C-34006

530164

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