abstract |
The present invention discloses methods of preparing compounds of formula 1 from compounds of formula 2, wherein X, R 1 , R 2 , R 3 , R 4 , R 5 , n, R 6 , R 7 , G and W are as described in this publication definition. The present invention also discloses compounds of formulae 2 and 4 , wherein X, R1, R2, R3 , R4, R5 , n, R6 , R7 , G and W are as defined in this disclosure. The present invention also discloses methods for preparing the compounds of formulae 2 and 4. |