PYRIDINE DERIVATIVE

• Main Authors: TAKAMATSU, HAJIME, KAIZAWA, HIROYUKI, HIRAMOTO, MASASHI, KANAI, AKIRA, ISHIHATA, AKIHIRO, MORIKAWA, HIROSHI, HANADATE, TADAATSU, KAZAMI, JUNICHI, ENJO, KENTARO, KAWAGUCHI, KENICHI, TSUCHIYA, KAZUYUKI, INAGAKI, YUSUKE
• Format: Patent
• Language: English
• Published: 13.02.2017
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

The present invention addresses the problem of providing a medicinal composition and, in particular, a compound suitable for treating nocturia. Under the expectation that nocturnal urinary frequency could be reduced via an antidiuretic action, said antidiuretic action being induced by inhibiting placental leucine aminopeptidase (P-LAP) that is an AVP-metabolic enzyme at night and thus maintaining and/or increasing endogenous AVP concentration, extensive studies were made on compounds capable of inhibiting P-LAP. As a result, it was discovered that a (2R)-3-amino-2-[(4-substituted pyridin-2-yl)methyl]-2-hydroxypropanoic acid derivative has an excellent P-LAP inhibiting effect. By testing the antidiuretic action using drinking water-loaded rats, furthermore, it was discovered that the aforesaid compound has an effect of suppressing urine production due to an increase in endogenous AVP concentration based on the inhibition of P-LAP. Thus, the present invention provides a compound that is likely usable as a therapeutic agent for nocturia based on a mechanism of inhibiting P-LAP.