Chemical and Pharmaceutical Bulletin p. 2276 - 2284 (1994)
Update date:2022-07-29
Topics:
Iwasaski
Sakaguchi
Ohashi
Takahara
Ogawa
Yasuda
Koshinaka
Kato
Ito
Sawanishi
A simple method of transforming classical antihistaminics into nonsedative antiallergic agents with strong effects in rat models is described. Various [4-(diphenylmethoxy)piperidinol - (series A), [4-(diphenylmethyl)piperazinyl]- (series B) and [4-(diphenylmethylene)piperidino]alkanoic acid derivatives (series C) were synthesized and examined for antiallergic activities and effects on the central nervous system (CNS), in comparison with the corresponding N-methyl derivatives (1a-c). N-Alkylcarboxylic acids (5a-c) showed stronger inhibitory effects on compound 48/80-induced lethality in rats than the corresponding N-methyl derivatives (1a-c). In particular, N-alkylcarboxylic acids (5a) in series A exhibited approximately 100-fold stronger inhibitory effects than 1a, and were the least effective in prolonging the sleeping time on hexobarbital-induced anesthesia in mice in all series. As a result of chemical modification in series A, it was found that introduction of a methyl group at the para-position on one benzene ring in the (diphenylmethoxy)piperidine system effectively reduced CNS side-effects without reducing antiallergic activity. (+)-3-[4-[(4-Methylphenyl)phenylmethoxy] piperidinol propionic acid ((+)-51), an optically active isomer of 51, exhibited a stronger antiallergic effect (ED50 = 0.17 mg/kg, p.o.) than ketotifen and terfenadine in the 48 h homologous passive cutaneous anaphylaxis (PCA) test, and moreover exhibited no CNS side-effects, such as prolongation of the sleeping time on hexobarbital-induced anesthesia, at an oral dose of 30 mg/kg. Compound (+)-51 was thus proved to be a promising candidate as a nonsedative antiallergic agent.
View MoreZHIJIANG ZENVA SINO COMMERCE AND TRADE CO., LTD.
website:http://www.zenvasino.com
Contact:+86-138-72658998
Address:Shibeishan Road,Zhijiang, Hubei, China
Chongqing KonAo Health Co.,Ltd
Contact:13687578375
Address:wuhan hubei china
Shanghai Dano Pharmaceutical Co.,Ld.(expird)
Contact:+86-592-6266840
Address:Building 1 Room 512, 720 Cailun Rd, Zhangjiang High-Tech Park, Shanghai 201203, China
Contact:+86 21 5017 5386
Address:No 999,Jiangyue Rd, Minhang Dist ,201114,Shanghai ,China
Contact:+86-0311-84455288-844
Address:Mayu Industrial Park, Jinzhou, Hebei, China.
Doi:10.1021/jm00158a021
(1986)Doi:10.1021/jm960128k
(1996)Doi:10.1021/jo01075a629
(1960)Doi:10.1002/anie.201705976
(2017)Doi:10.1016/0040-4039(95)02195-7
(1996)Doi:10.1016/S0968-0896(00)00100-0
(2000)