Patent ID: 7749969

Claim:
A compound selected from the group consisting of: N-(7-hydroxycoumarin-4-acetyl)-Asn-Gly-NH 2 (Compound 1), N-(9-fluorenylmethyloxycarbonyl)-Asn-Gly-NH 2 (Compound 4), N-(acridin-9-carbonyl)-Asn-Gly-NH 2 (Compound 5), N-(pyrenyl-1-carbonyl)-Asn-Tyr-NH 2 (Compound 6), H-Gly-Asn-NH(4-methyl-coumarin-7-yl) (Compound 9), H-Gly-Asn-NH(4-nitrophenyl) (Compound 10), Ac-Gly-Asn-NH(4-nitrophenyl) (Compound II), H-Gly-Asn-NH(pyrenylmethyl) (Compound 12), Ac-Gly-Asn-NH(pyrenylmethyl) (Compound 13), Ac-Gly-Asn-NH(quinolin-6-yl) (Compound 14), and N-(7-hydroxycoumarin-4-acetyl)-D-Asn-Gly-OH (Compound 15), or a pharmaceutically acceptable salt thereof.