Patent ID: 7745575

Claim:
An OsK1 derivative selected from the group consisting of the following OsK1 derivatives: [Δ 1 ]-OsK1, [A 34 ]-OsK1, [K 16 ]-OsK1, [D 20 ]-OsK1, [K 16 ,D 20 ]-OsK1, [Δ 1 ,K 16 ,D 20 ]-OsK1, [Δ 1 ,T 2 ,K 16 ,D 20 ]-OsK1, [Δ 1-4 ,K 16 ,D 20 ]-OsK1, [Δ 1-6 ,K 16 ,D 20 ]-OsK1, [Δ 1-7 ,K 16 ,D 20 ]-OsK1, [K 3 ,K 16 ,D 20 ]-OsK1, [P 12 ,K 16 ,D 20 ]-OsK1, [K 16 ,D 20 ,N 25 ]-OsK1, [K 16 ,D 20 ,R 31 ]-OsK1, [K 16 ,D 20 ,Y 36 ]-OsK1, and [K 12 , K 16 ,R 19 ,D 20 ]-OsK1.