The present invention relates generally to a compound and/or a composition comprising the compound, useful for the treatment of, or prevention of, a Coronavirus (CoV) infection in particular SARS-CoV/SARS-CoV-1 or SARS-CoV-2.
Mannich reaction of dihydropyridine derivatives I. Reactions with secondary amines.
作者:JIRO ARITOMI、SHOZO UEDA、HARUKI NISHIMURA
DOI:10.1248/cpb.28.3163
日期:——
Dialkyl 4-aryl-1, 4-dihydro-2, 6-dimethylpyridine-3, 5-dicarboxylates (III) were subjected to the Mannich reaction with excess paraformaldehyde and secondary amine hydrochloride in boiling ethanolic solution. When the compounds III were treated with a 5-to 7-fold molar excess of the aldehyde and amine salt, 2, 6-bis (2-disubstituted aminoethyl)-dihydropyridine derivatives (V) were obtained in good yields. On treatment with a 2- to 3-fold molar excess of the reactants, compounds III were converted to 2-(2-disubstituted aminoethyl)-6-methyldihydropyridine derivatives (IV) and V. When dioxane was used as a solvent with a 6-fold molar excess of the reactants, the tetrakis (dimethylaminomethyl) derivative (VII) was obtained.
Piperazine containing dihydronaphthalene derivatives and compositions
申请人:Takeda Chemical Industries, Ltd.
公开号:US04199582A1
公开(公告)日:1980-04-22
Novel 1,2-dihydronaphthalene derivatives of the formula ##STR1## wherein A is a di-lower alkylamino group or a 5- to 7-membered cyclic amino group which may contain one oxygen atom and n is 2 or 3, and its salts have excellent pharmacological activities such as vasodilator, hypotensive and cerebral blood flow increasing actions.
1,2-Dihydronaphthalene derivatives and pharmaceutical composition
申请人:Takeda Chemical Industries, Ltd.
公开号:US04148897A1
公开(公告)日:1979-04-10
Novel 1,2-dihydronaphthalene derivatives of the formula ##STR1## wherein R.sup.1 and R.sup.2, independently of each other, are hydrogen, nitro, amino, halogen, or hydroxyl which may be protected, and R.sup.3 is a piperazinyl or morpholino group which may be substituted by lower alkyl, aralkyl, carboxylic acid-derived acyl, lower alkoxycarbonyl-lower alkyl or cycloaminocarbonyl-lower alkyl, and its salts have excellent pharmacological activities such as vasodilator and cerebral blood flow increasing activities.
Dihydronaphthalene derivatives, their preparation and pharmaceutical compositions
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0000758A1
公开(公告)日:1979-02-21
1,2-dihydronaphthalene derivatives of the formula
wherein A is a di-lower alkylamino group or a 5- to 7- membered cyclic amino group which may contain one oxygen atom and n is 2 or3, and its salts have excellent pharmacological activities such as vasodilator, hypotensive and cerebral blood flow increasing actions. they are prepared by dehydration of