摘要:
The invention relates to a method for synthesizing 4β-amino-4′-demethyl-4-desoxypodophyllotoxin of formula (1), characterized by comprising the following successive steps: a) reacting, in a pure weak acid or in a mixture consisting of acid, water and of organic solvent, without another solvent, at a temperature higher than the ambient temperature, thiourea with 4β-halogenoacetamido-4′-demethyl-4-desoxypodophyllotoxin, and; b) recovering the 4β-amino-4′-demethyl-4-desoxypodophyllotoxin.
摘要:
The present invention describes a new process for the preparation of (poly)aminoalkylaminoacetamide compounds of epipodophyllotoxin useful for their applications in therapeutics as anticancer agents. This process comprises a step of condensation of a primary-amine-containing reactant, whose amine functions are not protected, with β-chloroacetamido-4′-epipodophyllotoxin in a polar aprotic organic solvent.
摘要:
The invention relates to a method for synthesizing 4β-amino-4′-demethyl-4-desoxypodophyllotoxin of formula (1), characterized by comprising the following successive steps: a) reacting, in a pure weak acid or in a mixture consisting of acid, water and of organic solvent, without another solvent, at a temperature higher than the ambient temperature, thiourea with 4β-halogenoacetamido-4′-demethyl-4-desoxypodophyllotoxin, and; b) recovering the 4β-amino-4′-demethyl-4-desoxypodophyllotoxin.
摘要:
The invention concerns compounds of general formula 1, wherein: A, B, D and E represent one or two nitrogen atoms, the others being carbon atoms; X represents a S or, a O, thereby forming a bicyclic fused heteroaromatic, such as thieno[2,3-b]pyridine, furo[2,3-b]pyridine, thieno[3,2-b]pyridine, furo[3,2-b]pyridine, thieno[2,3-b]pyrazine, furo[2,3-b]pyrazine, thieno[2,3-c]pyridine, furo[2,3-c]pyridine, thieno[3,2-c]pyridine and furo[3,2-c]pyridine; R1 represents a linear or branched C1-C6 alkoxy group, a linear or branched C1-C6 alkylthio group; R2 represents a linear, branched, cyclic C2-C8 group, a 2- or 3-thienylmethyl group, or a benzyl group optionally substituted by one or several halogens, F, Cl, Br, I, C1-C4alkyl, C1-C4 alkoxy, CF3, CN, NO2, OH; and their pharmaceutically acceptable salts. Said compounds are anti-dopaminergic agents.
摘要:
The invention concerns the use of efaroxan or therapeutically-acceptable salts, in its racemic form or in the form of an optically-active isomer, for treating Huntington's disease.
摘要:
A novel process for obtaining an .alpha.-amino-nitrile of the formula ##STR1## by reacting a nitrile with a metallic reducing agent to form a metallic imine of the formula ##STR2## and reacting the latter with a cyaniding agent to obtain the corresponding .alpha.-amino-nitrile.
摘要:
The present invention relates to chromone derivatives, their preparation, their pharmaceutical compositions and their application as D3 dopaminergic ligands as a medicament for disorders of the central nervous system.
摘要:
The present invention relates to chromone derivatives, their preparation, their pharmaceutical compositions and their application as D3 dopaminergic ligands as a medicament for disorders of the central nervous system.
摘要:
The invention relates to compounds of general formula (1) in which R1=H, F or OCH3 and may occupy the 2, 3, 4 or 5 position on the aromatic carbocycle, R2=H or CH3, R3=H, CH3, OH or OCH3, R4=H and R3 and R4 together can be a carbonyl group (C=0), the addition salts and optionally the hydrates of additional salts with pharmaceutically-acceptable mineral or organic acids and the isomers and tautomers thereof.