| abstract |
The present invention provides compounds of formula XXIII: And derivatives and stereoisomers, pharmaceutically acceptable salts and derivatives thereof, wherein R 1 is hydrogen, alkyl, acyl or silyl, R 2 is hydrogen, alkyl, benzyl, acyl or ester, and R is hydrogen, alkyl, aromatic, nitrogen heterocycle, carbocycle, aryl, cycloalkyl, heterocycloalkyl, heterocycle, heteroaryl, heteroalkyl, acyl or ester; and preparation and methods of using these compounds. The present invention includes pharmaceutical compositions containing these compounds, as well as the use of these compounds in methods of treating conditions, diseases or disorders. |