Astellas Pharma Gmbh

Ryotaro Ibuka

Ryushi Seo

Kazuhiro Ikegai

Shunichiro Hachiya

Susumu Watanuki

Taisuke Takahashi

Eisuke Nozawa

Yoh Terada

Keisuke Matsuura

Makoto Oku

Tatsuya Zenkoh

Masanao Sanagi

Michihito Kageyama

[Problems] A compound, which is useful as an active ingredient of a pharmaceutical composition, for example, a pharmaceutical composition for treating chronic renal failure and/or diabetic nephropathy, is provided. [Solving Means] The present inventors have conducted extensive studies on a compound having an EP4 receptor antagonistic activity, and confirmed that the amide compound of the present invention has an EP4 receptor antagonistic activity, thereby completing the present invention. The amide compound of the present invention has an EP4 receptor antagonistic activity, and can be used as an active ingredient of a pharmaceutical composition for preventing and/or treating various EP4-related diseases, for example, chronic renal failure and/or diabetic nephropathy, and the like.

Amide compound

To provide a compound which can be used for treating diseases in which a calcium sensing receptor (CaSR) participates, particularly hyperparathyroidism. It was found that a novel piperidine derivative which is characterized in that one of a 3-position and a 4-position is substituted with an aminomethyl group substituted with an arylalkyl group or the like and the other position is substituted with aryl, heteroaryl or the like, or a salt thereof, has an excellent CaSR agonistic regulatory action, and also has excellent selectivity with a CYP2D6 inhibitory action having a possibility of causing drug interaction. Based on the above, this novel piperidine derivative is useful as a therapeutic agent for diseases in which CaSR participates (hyperparathyroidism, renal osteodystrophy, hypercalcemia, and the like).

Piperidine derivative or salt thereof

Growing community of inventors

Tokyo, Japan

Ryotaro Ibuka