C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/304.7
C07D 405/04 (2006.01) C07D 257/04 (2006.01) C07D 311/12 (2006.01) C07D 311/14 (2006.01) C07D 311/16 (2006.01)
Patent
CA 1165321
Abstract Tetrazolylcoumarin derivatives of the general formula: Image wherein R is hydrogen atom, an alkyl group, an alkenyl group, an alkoxyalkyl group or phenyl group, n is an integer of 2 to 4, and the R-O-(CH2)n-0- group is substituted at any of the 5, 6, 7 and 8 positions of the coumarin ring, and the salts thereof. The compounds are useful as antiallergic agents for preventing and treating allergic diseases.
376869
Itikawa Kiyonoshin
Matsuda Tetsuo
Nakano Jun
Suzuki Yuji
Terashima Yukio
Kakenyaku Kako Co. Ltd.
Osler Hoskin & Harcourt Llp
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