| 摘要 |
A compound of the formula <IMAGE> V, W, Y, and Z are each independently C-H, oxygen, nitrogen, or sulfur; T is C-H or nitrogen; n is 0 or 1; R4 is hydrogen or one, two or three substituents independently selected from C1-C4-alkyl, halo-substituted C1-C4-alkyl, hydroxy-substituted C1-C4-alkyl, halogen, hydroxy, C1-C4-alkoxy, mercapto, amino, mono-(C1-C4-alkyl)amino, di-(C1-C4-alkyl)amino, formamido, mono-(C1-C4-alkyl)amido, di-(C1-C4-alkyl)amido, cyano, nitro, C1-C4-alkoxycarbonyl, carboxyl, aminomethyl, mono-(C1-C4-alkyl)aminomethyl, di-(C1-C4-alkyl)aminomethyl, wherein free hydroxy and amino groups may be protected.
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