| 摘要 |
<p>The present invention encompasses structures of formula (I) and the pharmaceutically acceptable non-toxic salts thereof wherein (a) represents (b); (c); (d) or (e) or (f), where W represents an aromatic group substituted with various organic and inorganic substituents; X, Y are hydrogen, halogen, hydroxy or amino with the proviso that at least X or Y is hydroxy; A, B, C and D represent nitrogen or a carbon atom substituted with various organic and inorganic substituents; E represents oxygen, sulfur or substituted nitrogen; R3, R4, R12 and R13 are variables representing various organic and inorganic substituents; and n is 0, 1 or 2.</p> |
