abstract |
A compound of formula (I) (See formula) in which R 1 represents C 1-6 alkyl or C 1-6 haloalkyl; R2 represents C3-8 cycloalkyl or C3-8 cycloalkenyl, any of them optionally substituted with one or more groups selected from oxo, methyl, methylene and halogen; R3 represents hydrogen, methyl, which may be in the alpha or beta configuration, or methylene; R4 and R5 are the same or different and each represents hydrogen or halogen; and - - - - ____ represents a single link or a double link; and solvates thereof. |