摘要:
The invention relates to new addition salts comprising lercanidipine and an acid counterion selected from the group consisting of: (i) inorganic acids, (ii) sulphonic acids, (iii) monocarboxylic acids, (iv) dicarboxylic acids, (v) tricarboxylic acids, and (vi) aromatic sulphonimides, with the proviso that said acid counterion is not hydrochloric acid. In particular, both amorphous and crystalline salts of lercanidipine with benzenesulphonic and naphthalene- 1,5-disulphonic acids are disclosed, as are amorphous salts of lercanidipine with several other acid counterions.
摘要:
The invention provides a substantially pure amorphous lercanidipine hydrochloride having a purity of at least 95% pure, preferably at least about 97% pure, more preferably at least about 99% pure, and still more preferably at least about 99.5% pure. The invention further relates to methods of preparing substantially pure amorphous lercanidipine, as well as methods of providing rapid relief from hypertension by administering the substantially pure amorphous lercanidipine hydrochloride of the present invention to a patient in need of such treatment.
摘要:
Compounds of formula (I) (R and R1 are a wide range of substituents, Q is CO, CHOH or CHOR2, R2 is alkyl, alkenyl, alkynyl or cycloalkyl group, each of which is optionally substituted, or is alkanoyl, alkanoyoxy, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, aminothiocarbonyl, alkylaminothiocarbonyl or dialkylaminothiocarbonyl, R3 is H, alkyl, -alkenyl, alkynyl, cycloalkyl, aryl or heterocyclic group, each of which is optionally substituted, n is 1 or 2, A is a bond or a methylene or ethylene group and R4 is an aryl or heteroaryl group, either of which is optionally substituted) have affinity for serotoninergic receptors. These compounds and their enantiomers, diastereoisomers, N-piperazine oxides, polymorphs, solvates and pharmaceutically acceptable salts are useful in the treatment of patients with neuromuscular dysfunction of the lower urinary tract and diseases related to 5-HT1A receptor activity.
摘要:
N,N-Disubstituted diazocycloalkanes of the formula (I): (R = halogen, R = (C3-C8)-cycloalkyl, R = (C1-C4)-alkoxy or (C1-C4)-haloalkoxy group, m is 1 or 2, n is 1 or 2) have affinity for serotoninergic receptors. These compounds and their enantiomers, diastereoisomers, N-oxides, polymorphs, solvates and pharmaceutically acceptable salts are useful in the treatment of patients with neuromuscular dysfunction of the lower urinary tract and diseases related to 5-HT1A receptor. 1,4-Disubstituted-piperazines (n = 1) are preferred. R is preferably F in the 2-position, R is preferably cyclohexyl, and R is preferably a methoxy or 2,2,2-trifluoroethyl group. Preferably, m = 1.
摘要:
The invention provides substantially pure lercanidipine free base, having a purity of at least 95 %, preferably at least about 97 %, more preferably at least about 99 %, and still more preferably at least about 99.5 %. The lercanidipine free base of the present invention is formed as an amorphous solid that is easily handled and particularly well suited to the formulation of pharmaceutical compositions.
摘要:
Described is the use in the treatment of either male or female sexual dysfunction of selective antagonists of the alpha1B-adrenergic receptor and the pharmaceutical compositions containing them as compounds capable of helping the sexual act avoiding at the same time excessive side effects due to acute hypotension.
摘要:
Compounds of formula (I) are thus useful for treating disorders of the urinary tract. In the compounds I, R1 = one or more substituents selected from H, halogen, OH, alkyl, haloalkyl, alkoxy, haloalkoxy, NO2, nitro, phenyl, substituted phenyl, heterocycle, substituted heterocycle, NR3R4(R3 and R4 being H, alkyl, acyl or alkoxycarbonyl); R2 = one or two substituents selected from H, alkyl; Y = CH2 or a bond; Q = CO, CS or SO2; A = alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, heterocyclic, alkylamino, dialkylamino, arylamino or arylalkylamino, each of which is optionally substituted; n is 1 or 2; X = an amino moiety selected from formula (a), (b) and -N(R5)-CH2-(R5 = H, methyl, benzyl group; W = bond, N, CH, CH2, C(CN) C(OH) or C(COCH3) (when W represents a nitrogen atom or a CH, C(CN) C(OH) or C(COCH3) group, the group Z-B attaches to the W ring atom); when X is (a) or (b), Z = bond, O, S, CH2, CH2CH2, CO, CHOH, OCH2, NH, NHCO or NHCONHCH2, but when X is -N(R5)-CH2-group, Z represents a CH2CH2 or CH2O group or Z and B together represent a 2,3-dihydro-benzo[1,4]dioxin-2-yl group; and B is a monocyclic or bicyclic aryl group or a monocyclic or bicyclic heterocycle, each of which is optionally substituted.
摘要:
A process for the preparation of methyl 1,1,N-trimethyl-N-(3,3-diphenyl-propyl)-2-aminoethyl 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-pyridine-3,5-dicarboxylate (lercanidipine) of formula I comprises reacting an acid halide of 2,6-dimethyl-5-methoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid with 2,N-dimethyl-N-(3,3-diphenylpropyl)-1-amino-2-propanol in an aprotic solvent. The product can be isolated by industrially applicable crystallization techniques and is obtained in high yield as its anhydrous hydrochloride, a form which possesses high stability and low hygroscopicity.