Patent ID: 6943182

Claim:
A compound of the formula (I) in which R 1 and R 3 independently of one another in each case represent hydrogen, halogen or alkyl, R 2 and R 4 independently of one another in each case represent halogen, alkyl or alkoxy optionally substituted by fluorine and chlorine, R 5 represents hydroxyl, alkylamino or the radical —NR 12 —CHR 13 —COOR 14 , in which R 12 represents hydrogen or alkyl, R 13 represents one of the radicals of a natural amino acid or represents hydrogen. (C 1 -C 4 )-alkyl optionally substituted by amino or hydroxyl or represents mercaptomethyl, methylthioethyl, carboxymethyl, carboxyethyl, carbamoylmethyl, carbamoylethyl, guanidinopropyl or represents phenyl or benzyl optionally substituted by amino, nitro, halogen, hydroxyl or methoxy or represents naphthylmethyl, indolylmethyl, imidazolylmethyl, triazolylmethyl or pyridylmethyl, where functional groups can optionally be present in protected form, or R 12 and R 13 together represent —(CH 2 ) 3 — and —(CH 2 ) 4 —, and R 14 represents alkyl, benzyl or another C-terminal protective group, R 6 represents hydrogen or R 5 and R 6 together represent oxygen (oxo), R 7 and R 8 in each case represent hydrogen, R 9 represents phenyl or hetaryl, which in each case can optionally be substituted up to four times by substituents of the group: halogen, C 1 -C 6 -alkyl, hydroxyl, C 1 -C 4 -alkoxy, C 1 -C 4 -alkylthio, C 1 -C 4 -alkylcarbonyl, phenyl, phenoxy, hetaryl, hetaryloxy, C 1 -C 4 -alkyl substituted by fluorine or chlorine, C 1 -C 4 -alkoxy substituted by fluorine or chlorine, C 1 -C 4 -alkylthio substituted by fluorine or chlorine, C 1 -C 4 -alkylcarbonyl substituted by fluorine or chlorine, R 10 represents hydrogen, halogen, alkyl or alkoxy and R 11 represents hydrogen, halogen or alkyl, or a pharmaceutically acceptable salt thereof, with the exception of 3,3a-dihydro-6,8-dimethoxy-3a-(4-methoxyphenyl)-3-phenyl-1H-cyclopenta[b]benzofuran-1,8b(2H)-diol and 2,3,3a,8b-tetrahydro-8b-hydroxy-6,8-dimethoxy-3a-(4-methoxyphenyl)-3-phenyl(-1H-cyclopenta[b)benzofuran-1-one.