Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Ester doai
Patent
1996-08-09
1998-04-14
Reamer, James H.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Ester doai
514596, 560 34, 564 48, 564 53, A61K 3124
Patent
active
057391629
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to novel carbamoylmethylurea derivatives capable of competing with gastrin and/or CCK-B and binding to their receptors, and pharmaceutical compositions which contain the same and are useful in the treatment of various diseases associated with gastrin and/or CCK-B receptors.
BACKGROUND OF THE INVENTION
Gastrin and cholecystokinin (CCK) are physiologically active substances belonging to what is called a gastrin sub-family of the gastrointestinal peptide hormone family. Although gastrin receptors are commonly found in various tissues including the whole superior digestive tract, pancreas, liver, biliary duct and the like, they mainly exist on parietal cells of fundic glands and participate in the mediation of gastric acid secretion. As for CCK receptors, it is known that there are two types of receptors, i.e., CCK-A receptor found in peripheral tissues such as digestive gut and CCK-B receptor found in brain. The former participates in the control of gut motility and pancreas secretion whereas the latter in the control of central nervous action, appestat and the like. Accordingly, it has been expected that compounds capable of competing with gastrin and/or CCK-B and binding to their receptors are useful in the treatment of animals including human suffering from gastrointestinal and central nervous diseases associated with receptors for these peptide hormones. For example, such compounds are thought to be useful as an anti-tumor agent; a drug for treating pancreatitis, gallbladder disorder or irritable bowel syndrome, for relieving biliary colic, and for improving appetite. Further, investigations into receptors in both gastrointestinal and central nervous system revealed that these gastrointestinal peptide Peptides" Taisha, vol. 18, No. 10, 33-44 (1981); J. Hughus, C. Woodruff, D. Horwell, A. McKnight & D. Hill, "Gastrin", J. H. Walsh ed., Rovan Press, Ltd., New York, 1993, p. 169-186; F. Makovec, Drugs of the Future, 18, 919 (1993); Japanese Patent Publication (KOKAI) 63-238069, EP 167,919; U.S. Pat. No. 4,820,834; EP 284,256; U.S. Pat. No. 5,004,741!.
For instance, gastrin antagonists specific to gastrin receptors are thought to be effective on gastrin-associated disorders such as peptic ulcers in gaster and duodenum, Zollinger-Ellison syndrome, hyperplasia of sinus G cells, and decrease in gastrin activity. The usefulness of antagonists specific to gastrin-receptor in the treatment of gastric and duodenal ulcers has been reported (Taisha, 29/7, 1992, R. Eissele, H. Patberg, H. Koop, W. Krack, W. Lorenz, A. T. McKnight & R. Arnold, Gastroenterology, 103, 1596 (1992), etc.)
There have been reported that antagonists against CCK-B receptor are useful in the reinforcement and elongation of the analgetic effect of opioid-type compounds (e.g., morphine derivatives such as morphine sulfate or the future 18, 919 (1993); Proc. Natl. Acad. Sci. U.S.A., Vol. 87, p. 71, 05 Sep. 1990, Neurobiology!.
As compounds useful in the above-mentioned treatment, there have been L-365260 described in the Japanese Patent Appln. Publication KOKAI No. 63-238069; YM022 described in WO 92/11246; and compounds described in WO CI-988 described by Martin J. Drysdale et al., J. Med. Chem. 35:2573-2581 (1992); RP 72540 described in Drugs of the Future, 1993, 18(10); and LY-288513 described in J. Pharmacol. Exp. Ther., 264, 480 (1993)!, which are antagonistic against gastrin receptor or CCK-B receptor. However, many of those disclosed prior to the present invention do not have sufficient affinity for each receptor or lack in any specific pharmacological data. Thus, there have been provided no clinically applicable anti-ulcer agents with gastrin receptor antagonistic effect. Accordingly, it is necessary to develop a compound capable of binding to an intended peptide hormone receptor in preference discriminating it from that for peptide hormones of different sub-types in order to conduct treatment more efficiently.
DISCLOSURE OF THE INVENTION
In the situations above, the present invent
REFERENCES:
patent: 5338760 (1994-08-01), Bourzat et al.
patent: 5382590 (1995-01-01), Bourzat et al.
Haga Nobuhiro
Hagishita Sanji
Ishihara Yasunobu
Kamata Susumu
Konoike Toshiro
Reamer James H.
Shionogi & Co. Ltd.
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