| 摘要 |
The invention relates to novel, biologically active tetracyclic compounds of the general formula I: …<CHEM>… or salts thereof, where… R represents hydrogen, alkyl (1-6 C), aralkyl (7-10 C) or acyl,… R1, R2, R3 and R4 each represent hydrogen, hydroxy, halogen, alkyl (1-6 C), alkoxy (1-6 C), alkylthio (1-6 C) or trifluormethyl, and… R5 represents hydrogen or an alkyl group (1-6 C), having specific anxiolytic properties. |
