Buku A, Yamin N, Gazis D. Effects of the substitution of photoreactive groups in positions 4 and 8 of vasopressin.
INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1989;
34:28-32. [PMID:
2507457 DOI:
10.1111/j.1399-3011.1989.tb01003.x]
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Abstract
In an effort to synthesize potent vasopressin analogs containing photoreactive groups, we prepared, by solid phase synthesis, three analogs with proline or hydroxyproline substitutions in positions 4 and/or 7, lysine in positions 4 or 8, and beta-mercaptopropionic acid in position 1. From these three parent analogs, 1-desamino[4-proline,8-lysine]VP, 1-desamino[4-hydroxyproline,8-lysine]VP, and 1-desamino[4-lysine,7-hydroxyproline]AVP, we then prepared the corresponding azido compounds using the epsilon-amino group of lysine as the attachment point. These six analogs were then assayed for antidiuretic and pressor activities in rats. One of the resulting analogs, 1-desamino[4-lysine(N epsilon-4-azidobenzoyl),7-hydroxyproline)]AVP has the highest antidiuretic activity of any photoreactive compound reported to date.
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