Patent ID: 8481581

Claim:
A compound of formula wherein: P is selected from the group consisting of (a): R 1 is selected from the group consisting of Cl, Br, I, CF 3 , CHF 2 ; and CH 2 F; R 2 and R 2′ are independently selected from the group consisting of H, optionally substituted C 1-5 acyl, 1-(C 2-4 acyloxy)C 1-4 alkoxycarbonyl, and an acyl group derived from an α-amino acid; R 3 is H or CH 3 ; R 0 is selected from the group consisting of Cl, Br, CF 3 and methyl; R P is C 3-6 cycloalkyl; and R 4 , R 5 and R 6 are independently selected from the group consisting of H, F, Br, CH 3 , CF 3 , CFH 2 , CF 2 H, isopropyl, cyclopropyl, OCH 3 , OH, OCF 3 , NH 2 and NHCH 3 .