| 摘要 |
3-Hetero(ar)aliphatic 4-hydroxy-2(1H)-quinolone derivs. (I) and their salts are new; R1-R4 = H; aliphatic hydrocarbyl; opt. etherified OH; opt. etherified and/or oxidised SH; NH2 (opt. aliphatically substd.); NO2; opt. esterified or amidated COOH; CN; opt. amidated sulphamoyl; halo; or CF3; X = O; or opt. oxidised S; A = divalent aliphatic gp.; R5 = opt. etherified CH2OH; CN; opt. esterified or amidated COOH; or aryl or heteroaryl opt. partially hydrogenated and opt. substd. by aliphatic or araliphatic hydrocarbyl, opt. etherified OH, opt. etherified and/or oxidised SH, NH2 (opt. aliphatically substd.), aliphatic acyl, opt. esterified or amidated COOH, CN, opt. amidated sulphamoyl halo and/or CF3. |
