| abstract |
The present invention is directed to novel carboxylic acids and isosteres of heterocyclic ring compounds of formula (I) which have multiple heteroatoms within the heterocyclic ring, novel derivatives containing N-linked diketos, sulfonamides, ureas and carbamates attached thereto, their preparation and u se for treating neurological disorders including physically damaged nerves and neurodegenerative diseases, as well as for treating alopecia and promoting hair growth. A, X, Y, Z, D and n are as defined in the application. |