Patent ID: 7354934

Claim:
A compound of the formula or a pharmaceutically acceptable salt thereof; and including any stereoisomeric forms thereof; wherein n4 is 2-4; each R 1 is independently H, halo, alkyl, alkoxy, or CF 3 ; each R 2 is independently H or alkyl; R 3 is H, alkyl, alkenyl, arylalkyl, or aryl; each R 4 is independently H or alkyl, or the two R 4 groups may be taken together with the ring to which they are attached to form an optionally substituted 6-membered aromatic or heteroaromatic ring; and each R 6 is independently H, arylalkyl, acyl, arylacyl, or arylsulfonyl, wherein the aryl moieties thereof optionally contain one or more heteroatoms selected from the group consisting of O, S, and N.