Patent ID: 8884000

Claim:
A transition state inhibitor of saporin-L1 selected from the group consisting of: an inhibitor having the structure: wherein each R is independently OCH 3 or aryl or alkyl, where the aryl or alkyl can be optionally substituted with one or more of OH, ═O, OCH 3 , NH 2 , C1-C6 alkyl or halogen; or a pharmaceutically acceptable salt thereof; an inhibitor having the structure: or a pharmaceutically acceptable salt thereof; an inhibitor having the structure: or a pharmaceutically acceptable salt thereof; an inhibitor having the structure: or a pharmaceutically acceptable salt thereof; an inhibitor having the structure: or a pharmaceutically acceptable salt thereof; an inhibitor having the structure: or a pharmaceutically acceptable salt thereof; and an inhibitor having the structure: or a pharmaceutically acceptable salt thereof.