Novel 5-hydroxytryptamine 4 (5-HT4) receptor agonists. Synthesis and gastroprokinetic activity of 4-amino-N-[2-(1-aminocycloalkan-1-yl)ethyl]-5-chloro-2-methoxybenzamide s.
A novel series of 4-amino-N-[2-(1-aminocycloalkan-1-yl)ethyl]-5-chloro-2-methoxyb enzamides. derivatives (1), which had amines conformationally restricted due to the effect of repulsion by neighboring substituents, were prepared and evaluated for 5-hydroxytryptamine 4 (5-HT4) agonistic activities by using the contraction of longitudinal muscle myenteric plexus (LMMP) of guinea pig ileum. One of the most potent compounds in this series was 4-amino-5-chloro-N-[2-(1-dimethylamino-1-cyclohexyl)ethyl]-2-methoxybenz amide (1c, YM-47813) with an EC50 value of 1.0 microM on LMMP. This compound effectively enhanced gastric motility and gastric emptying in conscious dogs by oral administration (1-3 mg/kg).
Suzuki
T
T
Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Co., Ltd., Ibaraki, Japan.
Imanishi
N
N
Itahana
H
H
Watanuki
S
S
Miyata
K
K
Ohta
M
M
Nakahara
H
H
Yamagiwa
Y
Y
Mase
T
T
D000818:Animals; D000897:Anti-Ulcer Agents / Q000494:pharmacology; D001549:Benzamides / Q000138:chemical synthesis* / Q000494:pharmacology*; D020117:Cisapride; D018360:Crystallography, X-Ray; D004285:Dogs; D005746:Gastric Emptying / Q000187:drug effects; D005769:Gastrointestinal Motility / Q000187:drug effects*; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D010880:Piperidines / Q000494:pharmacology; D011985:Receptors, Serotonin / Q000187:drug effects*; D044422:Receptors, Serotonin, 5-HT4; D017366:Serotonin Receptor Agonists / Q000138:chemical synthesis* / Q000494:pharmacology*; D013268:Stimulation, Chemical
C114057:4-amino-5-chloro-N-(2-(1-dimethylamino-1-cyclohexyl)ethyl)-2-methoxybenzamide; D000897:Anti-Ulcer Agents; D001549:Benzamides; D010880:Piperidines; D011985:Receptors, Serotonin; D017366:Serotonin Receptor Agonists; D044422:Receptors, Serotonin, 5-HT4; D020117:Cisapride