摘要:
The invention relates to a method of preparing an optically active cyanohydrin carboxylic acid ester from an optically active cyanohydrin of opposite configuration, wherein said starting cyanohydrin is converted with a carboxylic acid in the presence of a dialkyl azodicarboxylate and a triarylphosphine.The invention also relates to a method of preparing an optically active cyanohydrin of opposite configuration by a subsequent solvolysis of the ester obtained under conservation of the configuration.
摘要:
The present invention is concerned with the preparation of N-substituted vicinal aminoalcohol derivatives from the corresponding hydroxyl-protected cyanohydrin derivatives by successive partial reduction, transimination using a primary amine, reduction of the resulting imine and optional removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the starting cyanohydrin derivatives.The present invention is also concerned with certain new enantiomerically pure hydroxyl-protected vicinal aminoalcohols.
摘要:
The invention relates to a method of preparing optically active alcohols which consist substantially (at least 75% e.e.) or entirely of one enantiomer of formula 4 ##STR1## wherein R and A are as defined therein. The method comprises, which maintaining enantiomeric excess, converting an optically active cyanohydrin of formula 1 ##STR2## into optically active protected cyanohydrin of formula 2 ##STR3## converting the protected cyanohydrin of formula 2 into an optically active compound of formula 3 ##STR4## removing the protecting group B.
摘要:
The present invention is concerned with the preparation of erythro N-substituted vicinal aminoalcohol derivatives from hydroxyl-protected cyanohydrin derivatives by successive Grignard reaction, transimination using a primary amine, reduction of the resulting imine and removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the cyanohydrin derivatives.
摘要:
The present invention is concerned with the preparation of erythro N-substituted vicinal aminoalcohol derivatives from hydroxyl-protected cyanohydrin derivatives by successive Grignard reaction, transimination using a primary amine, reduction of the resulting imine and removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the cyanohydrin derivatives.
摘要:
The present invention relates to allosteric modulation of A3 adenosine receptor (A3AR) and provides for the use of an A3 adenosine receptor modulator (A3RM), for the preparation of pharmaceutical compositions for modulating the A3AR in a subject, as well as pharmaceutical compositions comprising the same and therapeutic methods comprising administering to a subject an amount of an A3RM, the amount being effective to modulate A3AR activity. The A3RM according to the invention are 1H-Imidazo-[4,5-c]quinolin-4-amine derivatives. The invention also provides some of such novel 1H-Imidazo-[4,5-c]quinolin-4-amine derivatives.
摘要:
Provided are 2,4-disubstituted quinoline derivatives that are A3 adenosine receptor modulators (A3RM), for use in the treatment of a condition which is treatable by adenosine, an A3 adenosine receptor (A3AR) agonist, or an A3 adenosine receptor antagonist. The 2,4-disubstituted quinoline derivatives can be used in the treatment of a condition treatable by an adenosine or an A3AR agonist, by enhancing activity of a protein (by binding of said 2,4-disubstituted quinoline derivative to the A3AR). Some conditions treatable by the 2,4-disubstituted quinoline derivative when used for enhancing activity include, malignancy, an immuno-compromised affliction, high intraocular pressure, or a condition associated with high intraocular pressure. Further provided is a method for treatment of a subject having a condition treatable by adenosine, an A3AR agonist, or an A3AR antagonist making use of the defined 2,4-disubstituted quinoline derivative (s), and pharmaceutical composition and comprising said derivative and a kit comprising the derivative and instructions for use thereof. One specific 2,4-disubstituted quinoline derivative includes N-{2-[(3,4-dichlorophenyl)amino]quinolin-4-yl}cyclohexanecarboxamide. The 2,4-disubstituted quinoline derivatives can be formulated in a form suitable for oral administration.
摘要:
The invention relates to pharmaceutical compositions for topical application containing at least one physiologically active agent and an effective amount of 1-oleylazacycloheptan-2-one as the human or animal epithelial membrane permeability enhancer, to the application of such pharmaceutical compositions by means of locally contacting the skin or other membrane of the human or animal with the above composition and to the 1-oleylazacycloheptan-2-one compound per se.
摘要:
The present invention relates to allosteric modulation of A3 adenosine receptor (A3AR) and provides for the use of an A3 adenosine receptor modulator (A3RM), for the preparation of pharmaceutical compositions for modulating the A3AR in a subject, as well as pharmaceutical compositions comprising the same and therapeutic methods comprising administering to a subject an amount of an A3RM, the amount being effective to modulate A3AR activity. The A3RM according to the invention are 1H-Imidazo-[4,5-c]quinolin-4-amine derivatives. The invention also provides some of such novel 1H-Imidazo-[4,5-c]quinolin-4-amine derivatives.
摘要:
The invention provides a compound of formula (I) wherein R and R′ are selected from hydrogen, alkyl, alkenyl, alkynyl, or aryl; R″ and R′″ are selected from hydrogen, acyl, thio-acyl, seleno-acyl, alkyl, alkenyl, alkynyl, or aryl; or a pharmaceutically acceptable salt thereof, to interact with the adenosine receptors in the beneficial treatment and/or prevention of a (dis)order arising from the said receptors. The invention further provides pharmaceutical compositions comprising said compounds. The invention also relates to the use of said compositions for treating an/or preventing a variety of diseases.