Category: tetrahydropyran. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-(Bis(4-chlorophenyl)methyl)piperazine, is researched, Molecular C17H18Cl2N2, CAS is 27469-61-0, about Synthesis and Topical Antiinflammatory and Antiallergic Activities of Antioxidant o-Aminophenol Derivatives. Author is Sugiyama, Naoki; Akahoshi, Fumihiko; Kuwahara, Shigeki; Kajii, Masahiko; Sakaue, Yoshiko; Yakumaru, Haruko; Sugiura, Masanori; Fukaya, Chikara.
A series of o-aminophenol derivatives I, II, and III (R1, R2 = Ph, 4-ClC6H4, 4-FC6H4, R3 = H, Me, CHMe2, R4 = Me, CMe3, m, n = 2, 3) bearing H1-antihistaminic structures were prepared to develop novel compounds for topical use possessing antiallergic as well as antiinflammatory activities. The effects of I-III were investigated on lipid peroxidation in rat brain homogenates, antiinflammatory effect on arachidonic acid- and 12-O-tetradecanoylphorbol-13-acetate-induced mouse ear edema and antiallergic effect on 48-h homologous passive cutaneous anaphylaxis in rats. Furthermore, the effects of these compounds on delayed-type hypersensitivity reaction in mice were examined Several N-monosubstituted amino-4-methylphenols exert potent inhibitory activities in all of these assays. Of these compounds, I (R1 = R2= 4-FC6H4, R3 = H, R4 = Me, m = 3, n = 2) was chosen for further development as AD0261.
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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics