The Scripps Research Institute

The University of Arizona

Wei Yuan

Chi-Huey Wong

Benito Munoz

Bengt Samuelsson

Victor J Huby

Sejin Lim

Cyclic lactam peptides are disclosed which inhibit at various levels of antagonism the melanocortin 1 receptor (MC1R), melanocortin 3 receptor (MC3R), melanocortin 4 receptor (MC4R), and Melanocortin 4 receptor (MC5R).

Melanocortin receptor antagonists and agonists

Inhibitors of leukotriene A.sub.4 hydrolase are disclosed, corresponding to Formula I, below: ##STR1## wherein the depicted --NH.sub.2 group is in the (S) configuration; --W is --CH.sub.2 SH, --CH.sub.2 NH.sub.2 or C(.dbd.Z)--Y, wherein .dbd.Z is .dbd.O, or --H and --OH; and --Y is selected from the group consisting of (a) phenyl, (b) trifluoromethylphenyl, (c) carboxyphenyl, (d) benzyl, (e) C.sub.1 -C.sub.6 alkylenecarboxyl, (f) C.sub.1 -C.sub.6 alkyl, (g) C.sub.2 -C.sub.6 alkenyl, (h) C.sub.1 -C.sub.6 alkylenephenyl and (i) --C(.dbd.O)--X--R.sup.1 wherein X is O or NH and, R.sup.1 is selected from the group consisting of C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkylenecarboxyl, and benzyl; R.sup.2 is hydrogen, benzyloxy or 2-naphthylmethyloxy, and a pharmaceutically acceptable acid addition salt thereof. Inhibitors wherein --W is --CH.sub.2 SH, --CH.sub.2 NH.sub.2 or C(.dbd.Z)--Y wherein .dbd.Z is .dbd.O and --Y is --C(.dbd.O)--X--R.sup.1 are particularly preferred, as are those compounds wherein .dbd.Z is .dbd. O and --Y is selected from the group consisting of (a) phenyl, (b) trifluoromethylphenyl, (c) carboxyphenyl, (d) benzyl, (e) C.sub.1 -C.sub.6 alkylenecarboxyl, (f) C.sub.1 -C.sub.6 alkyl, (g) C.sub.2 -C.sub.6 alkenyl, (h) C.sub.1 -C.sub.6 alkylenephenyl. An inhibitor where --W is --CH.sub.2 SH, --CH.sub.2 NH.sub.2 or C(.dbd.Z)--Y wherein .dbd.Z is .dbd.O and --Y is --C(.dbd.O)--X--R.sup.1 is particularly preferred, as are those inhibitor compounds where .dbd.Z is .dbd.O and --Y is (a)--(h).

Tight-binding inhibitors of leukotriene A.sub.4 hydrolase

Growing community of inventors

Sommerville, MA, United States of America

Wei Yuan