Opioid derivative

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

Reexamination Certificate

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C514S616000, C514S019300

Reexamination Certificate

active

06838580

ABSTRACT:
1. A peptide derivative represented by the following formula (1) or a salt thereof;wherein R1is hydrogen atom or methyl group, R2is hydrogen atom or hydroxy group and n is an integer of 1-8, provided that R1is hydrogen atom when R2is hydrogen atom, which has specific and high binding affinity with the μ-opioid receptor.

REFERENCES:
patent: 5272175 (1993-12-01), Hansen et al.
patent: 2001-122895 (2001-05-01), None
Yoshio Okada et al.; Tetrahedron, vol. 55, 1999, pp. 14391-14406.

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