Patent ID: 8022060

Claim:
A compound of formula XIVA: wherein: W 2 is aryl or heteroaryl, wherein the aryl or heteroaryl is substituted with 0-3 groups selected independently from hydroxy, aminocarbonyl (—C(═O)—NH 2 ), N-alkylaminocarbonyl (—C(═O)—NH(alkyl)), and N,N-dialkylaminocarbonyl (—C(═O)—N(alkyl)(alkyl)); R 23 and R 24 are each independently H or alkyl, provided that at least one of R 23 and R 24 is alkyl; A 2 and B 2 are each H, or together form a double bond; and X 2 is —CH 2 — or —O—; or a stereoisomer, pharmaceutically acceptable salt, or N-oxide thereof.