| 摘要 |
NEW MATERIAL:A compound expressed by formula I [R<1> represents amino or acylamino; A represents lower alkylene; Q represents =N- or =C(R<2>)-(R<2> represents carboxyl, esterified carboxyl or hydroxy lower alkyl)] and salt there of. EXAMPLE:5-Amino-3-[4-(3-indolyl)piperidinomethyl]-1,2,4-thiadiazole. USE:An antiallergic agent. PREPARATION:For example, a compound expressed by formula II or salt thereof is reacted with a compound expressed by formula III or salt thereof normally in an inert solvent such as water, alcohols or ethers, and, as necessary, in the presence of a base.
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