摘要:
The invention relates to new 1,4-dihydropyridine derivatives of the general formula I
in which R¹, R², R³ and n have the meaning stated in the patent claims. The compounds of the invention have a vasodilatory effect and are therefore suitable for the treatment of hypertension. Some of the compounds have a vasoconstrictory effect and can therefore be used for the treatment of hypotension.
摘要:
The present invention refers to 1,4-dihydropyridines,to processes for their preparation and to their use as antithrombotic drugs. Said new 1,4-dihydropyridines have the following general formula (I) wherein R represents hydrogen or a saturated or unsaturated alkyl group, with a linear or branched chain of 1 to 8 carbon atoms, R¹ represents an alkyl radical with a linear, branched or cyclic, saturated or unsaturated chain of 1 to 12 carbon atoms, which may be interrupted by an oxygen or by a 2-(N-salicylamido)ethyl group, n is a number equal to 1 or 2. These 1,4-dihydropyridines are obtained by processes based on the Hantzch reaction or on modifications thereof.
摘要:
4-alkyl-1,4-dihydropyridines with activity antagonistic of the PAF-"aceter" of formula (I) are described, in which R is a saturated alkyl chain C1-2; R' is a saturated or unsaturated C1-16 lineal, branched or cyclic chain that can be interrupted by an oxygen atom and can also represent a 2-(N-morpholine) ethyl group; n is 2 or 3; X is oxygen, sulphur or SO2; Ar represents an aromatic ring that cannot be phenyl when X=S and n=2. The compounds (I) can be prepared (a) by reaction of (II) with (III) and with (IV); or (b) by reacting (V) with (VI) and (IV); or (c) by reaction of (VII) with (VI). In these formulas the different radicals have the meaning given above. Compounds of formula (I) are used for the treatment of pathologic states and disorders in which the PAF-"aceter" participates, being used, for example, in treatment of inflammatory processes, psoriasis, glomerulitis, transplant rejection, acute and chronic bronchitis, bronchial asthma, states of shock and allergies Likewise it is used for the treatment of pathologic states and disorders in which it is necessary to stimulate the cellular immunity such as in immunodeficient syndromes and other situations in which the defense capacity is reduced.
摘要:
The invention relates to new 1,4-dihydropyridine derivatives of the general formula I
in which R¹, R², R³ and n have the meaning stated in the patent claims. The compounds of the invention have a vasodilatory effect and are therefore suitable for the treatment of hypertension. Some of the compounds have a vasoconstrictory effect and can therefore be used for the treatment of hypotension.
摘要:
4-alkyl-1,4-dihyropyridines, with PAF-antagonist activity, of formula (I) wherein R is saturated C₁-C₄, R′ is saturated C₁-C₆ alkyl which may be interrupted by an oxygen atom, or 2-tetrahydrofurfuryl and R² is saturated C₁-C₄ or phenyl, the compound wherein R is methyl, R′ is ethyl and R² is phenyl remain excluded, are described. The compounds (I) are prepared by: (a) reaction of (II) with (III); (b) reaction of (IV) with (V); (c) reaction of (VI) with (III) and with (VII); (d) reaction of (VIII) with (V) and with (VII); or (e) reaction of (VIII) with (VI) and with (VII) in the presence of ammonia. The compounds (I) are useful due to their antagonist activity of the platelet activating factor.
摘要:
Quaternary ammonium salts of general formula (I) wherein: R is a saturated or unsaturated, linear or branched alkyl radical of C₁ to C₈. Rʹ is a saturated or unsaturated, linear or branched alkyl radical of C₁ to C₁₂, or a benzyl radical. n is a number equal to 2 or 3. X ⊖ is a halogenide anion, such as Cl ⊖ , Br ⊖ , I ⊖ , are used as phase transfer catalysts, in heterogeneous ionic reactions wherein the reagents are in different phase and have different polarity.
摘要:
Quaternary ammonium salts of general formula (I) wherein: R is a saturated or unsaturated, linear or branched alkyl radical of C₁ to C₈. Rʹ is a saturated or unsaturated, linear or branched alkyl radical of C₁ to C₁₂, or a benzyl radical. n is a number equal to 2 or 3. X ⊖ is a halogenide anion, such as Cl ⊖ , Br ⊖ , I ⊖ , are used as phase transfer catalysts, in heterogeneous ionic reactions wherein the reagents are in different phase and have different polarity.