Ciba-geigy Corporation

Novartis Ag

Stuart J Mickel

Wolfgang Frostl

Helmut Bittiger

Ludwig Maier

Eric K Baylis

Roger G Hall

Hans-Rudolf Olpe

Gottfried Sedelmeier

Raymond Bernasconi

Christian Marescaux

Markus Schmutz

Pascal Furet

Heinrich Rueeger

Wolfgang Marterer

Walter Prikoszovich

Michael Foulkes

Georg Von Sprecher

Hans Hirt

Klemens Kaupmann

Wolfgang Froostl

Bernhard Bettler

Wolfgang Fr Ostl

Wolfgang Fröstl

Frank Schäfer

The present invention relates to synthetic routes to prepare a compound of the formula wherein Ris halogen, Chalogenalkyl, Calkoxy-Calkyloxy or Calkoxy-Calkyl; Ris halogen, Calkyl or Calkoxy; Rand Rare independently branched Calkyl; and Ris cycloalkyl, Calkyl, Chydroxyalkyl, Calkoxy-Calkyl, Calkanoyloxy-Calkyl, Caminoalkyl, Calkylamino-Calkyl, Cdialkylamino-Calkyl, Calkanoylamino-Calkyl, HO(O)C&#x2014;Calkyl, Calkyl-O&#x2014;(O)C&#x2014;Calkyl, HN&#x2014;C(O)&#x2014;Calkyl, Calkyl-HN&#x2014;C(O)&#x2014;Calkyl or (Calkyl)N&#x2014;C(O)&#x2014;Calkyl; or a pharmaceutically acceptable salt thereof as well as key intermediates obtained when following these routes as well as their preparation.

Alternative synthesis of renin inhibitors and intermediates thereof

The invention related to a novel process, novel process steps and novel intermediates useful in the synthesis of pharmaceutically active compounds, especially renin inhibitors, such as Aliskiren. Inter alia, the invention relates to a process for the manufacture of a compound of the formula III, wherein R, R, and R' are as defined in the specification, or a salt thereof, and a compound of formula IV wherein R, R, Rand R&#x2032; are as defined in the specification, and processes of manufacturing these.

Synthesis of renin inhibitors involving a cycloaddition reaction

The present invention provides a novel process, novel process steps and novel intermediates useful in the synthesis of pharmaceutically active compounds, especially renin inhibitors, such as Aliskiren. Inter alia, the invention provides a process for the manufacture of a compound of the formula III, wherein R, R, R, Rand PG are as defined in the specification, or a salt thereof. The manufacture comprises (preferably consists of) reacting a compound of the formula I, with a reagent able to transform hydroxy into X where X is for example a leaving group.

Process for preparing renin inhibitors

The present invention provides purified GABAreceptors and receptor proteins derived from rat and human sources, as well as nucleic acids which encode such proteins. The proteins and nucleic acids of the invention share significant homology with the GABAreceptor and the DNA encoding it as specifically disclosed herein. The invention moreover provides methods for isolating other members of the GABAreceptor family using DNA cloning technology and probes derived from the sequences provided herein, as well as novel members of the GABAreceptor family isolated by such methods. Furthermore, the invention relates to the use of GABAreceptors and receptor proteins and cells transformed with a gene encoding a GABAreceptor protein in a method for identifying and characterising compounds which modulate the activity of the GABAreceptor, such as GABAreceptor agonists and antagonists, which may be useful as pharmacological agents for the treatment of disorders associated with the central and peripheral nervous systems.

[object Object]

Compounds having GABA.sub.B -antagonistic properties, for example those of formula I ##STR1## wherein one of the radicals R.sub.1, R.sub.2 and R.sub.3 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another is hydrogen or, in the case of R.sub.1 or R.sub.2, hydroxy or, in the case of R.sub.1, halogen or, in the case of R.sub.2 together with R.sub.2 ', oxo, and the remaining radical is hydrogen, R.sub.1 ' is hydrogen or halogen, R.sub.2 ' is hydrogen, hydroxy or, together with R.sub.2, is oxo, R.sub.4 and R.sub.5 are hydrogen or R.sub.4 is an araliphatic or heteroarylaliphatic radical and R.sub.5 is hydrogen or an aliphatic radical, and R is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic, heteroarylaliphatic or aromatic radical having at least 2 carbon atoms or, when R.sub.1 is hydrogen or hydroxy, R.sub.2 is an aromatic radical and R.sub.1 ', R.sub.2 ' and R.sub.3 are hydrogen. R is methyl, and their pharmaceutically acceptable salts, can be used as active ingredients in medicaments for the treatment of epilepsies of the 'petit mal' type. The invention relates also to novel compounds of formula I and processes for the preparation thereof.

N-substituted aminoalkanephosphinic acid derivatives, compositions

Compounds of formula I ##STR1## wherein R is diethoxymethyl, R.sub.1 is hydrogen, R.sub.2 is pyrid-3-ylmethyl and R.sub.3 is hydrogen, or R is cyclohexylmethyl, R.sub.1 is hydrogen and R.sub.2 is quinolin-4-ylmethyl, or R.sub.1 is hydroxy and R.sub.2 is 3,4-methylenedioxybenzyl, 1-(3,4-methylenedioxyphenyl)ethyl, and R.sub.3 is hydrogen, or R is benzyl, R.sub.1 is hydroxy, R.sub.2 is 1-(3,4-methylenedioxyphenyl)ethyl, and R.sub.3 is hydrogen, and salts thereof have GABA.sub.B -antagonistic properties and can be used for the treatment of diseases responsive to GABA.sub.B -antagonists.

Aminoalkanephosphinic acids and salts thereof

N-aralkyl- and N-heteroaralkyl-aminoalkanephosphinic acids of formula I ##STR1## wherein R is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic or heteroarylaliphatic radical having at least 2 carbon atoms, R.sub.1 is hydrogen or hydroxy, R.sub.2 is an araliphatic or heteroarylaliphatic radical substituted by free or functionally modified carboxy that is bonded directly or by way of a spacer, and R.sub.3 is hydrogen, lower alkyl or a group R.sub.2, and the salts thereof have valuable nootropic and anti-epileptic properties and can be used in the preparation of a nootropic or anti-epileptic medicament.

N-aralkyl-and N-heteroaralkyl-aminoalkanephosphinic acids

Compounds having GABA.sub.B -antagonistic properties, for example those of formula I ##STR1## wherein one of the radicals R.sub.1, R.sub.2 and R.sub.3 is hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another is hydrogen or, in the case of R.sub.1 or R.sub.2, hydroxy or, in the case of R.sub.1, halogen or, in the case of R.sub.2 together with R.sub.2 ', oxo, and the remaining radical is hydrogen, R.sub.1 ' is hydrogen or halogen, R.sub.2 ' is hydrogen, hydroxy or, together with R.sub.2, is oxo, R.sub.4 and R.sub.5 are hydrogen or R.sub.4 is an araliphatic or heteroarylaliphatic radical and R.sub.5 is hydrogen or an aliphatic radical, and R is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic, heteroarylaliphatic or aromatic radical having at least 2 carbon atoms or, when R.sub.1 is hydrogen or hydroxy, R.sub.2 is an aromatic radical and R.sub.1 ', R.sub.2 ' and R.sub.3 are hydrogen, R is methyl, and their pharmaceutically acceptable salts, can be used as active ingredients in medicaments for the treatment of epilepsies of the 'petit mal' type. The invention relates also to novel compounds of formula I and processes for the preparation thereof.

Certain N-substituted-amino-alkane phosphinic acid derivatives having

Novel compounds of formula I ##STR1## wherein R is selected from butyl, diethoxymethyl, cyclohexylmethyl, cyclohex-3-enylmethyl, benzyl, 4-chlorobenzyl, 4-methylbenzyl and 4-methoxybenzyl, R.sub.1 is selected from hydrogen and hydroxy, R.sub.2 is selected from hydrogen, chlorobenzyl, dichlorobenzyl, .alpha.-cyclopropyl-dichloro-benzyl, dichlorophenyl-2-hydroxy-ethyl, dimethylbenzyl, trimethoxybenzyl, methylenedioxybenzyl, chlorophenylethyl, dichlorophenylethyl, chloro-iodo-phenylethyl, dimethoxyphenylethyl, methylenedioxyphenylethyl, trimethoxyphenylethyl, 3-phenylprop-2-yl, 3-phenyl-3-hydroxy-prop-2-yl, dichlorophenylpropyl, dichlorophenyl-3-hydroxyprop-2-yl, dichlorophenylbutyl and quinolin-4-ylmethyl, and R.sub.3 is selected from hydrogen and methyl, and salts thereof, have GABA.sub.B -antagonistic properties and can be used for the treatment of diseases responsive to GABA.sub.B -antagonists.

N-aralkyl- and N-heteroaralkyl-aminoalkanephosphinic acids of formula I ##STR1## wherein R is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, araliphatic or heteroarylaliphatic radical having at least 2 carbon atoms,

N-aralkyl- and N-heteroaralkyl-aminoalkanephosphinic acids

Compounds of the formula I ##STR1## wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms, and wherein one of the groups R.sup.1, R.sup.2 and R.sup.3 represents hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, another one of R.sup.1, R.sup.2 and R.sup.3 is hydrogen or, in the case of R.sup.1 and R.sup.2, is hydroxy, and the remaining one of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, or wherein R denotes methyl, R.sub.1 denotes hydrogen or hydroxy, R.sub.2 denotes an aromatic radical and R.sub.3 represents hydrogen, and their salts have GABA.sub.B -antagonistic properties and can be used as GABA.sub.B -antagonists. They are obtained when in a compound of formula II ##STR2## in which R, R.sup.1, R.sup.2 and R.sup.3 have their previous significances, Z represents --NH.sub.2 and R.sup.4 denotes a hydroxy-protective group R.sup.5 or, when R.sup.1 and R.sup.3 denote hydrogen and R.sup.2 denotes hydrogen or alkyl, denotes an alkali metal or ammonium ion R.sup.6, or Z represents a protected or latent amino group Z.sup.o and R.sup.4 denotes hydrogen or a hydroxy-protective group R.sup.5, any group R.sup.5 or R.sup.6 is replaced by hydrogen, and/or any group Z.sup.o is converted into --NH.sub.2.

Substituted propane-phosphinic acid compounds

Compounds of the formula I ##STR1## wherein either R.sub.1 is halogen, R.sub.1 ' is halogen or hydrogen and R.sub.2 and R.sub.2 ' denote hydrogen or R.sub.1 and R.sub.1 ' represent hydrogen, R.sub.2 is an aliphatic or aromatic radical and R.sub.2 ' is hydroxy or R.sub.2 and R.sub.2 ' together represent oxo, and wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms or, if R.sub.1 and R.sub.1 ' denote hydrogen, R.sub.2 represents an aromatic radical and R.sub.2 ' is hydroxy, R represents methyl, and their salts are useful as nootropics, antidepressants and/or anxiolytics. The can be manufacture by replacing any group R.sub.5 by hydrogen and/or converting any group Z.sub.0 into amino in a compound of formula II ##STR2## in which R, R.sub.1, R.sub.1 ', R.sub.2 and R.sub.2 ' have their previous significances, Z represents a protected or latent amino group Z.sub.0 and R.sub.4 denotes hydrogen or a hyddroxy-protective group R.sub.5, and wherein amino as a constituent of R and/or hydroxy R.sub.2 ' or oxo R.sub.2 +R.sub.2 ' may be present in a temporarily protected form.

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Lausen, Switzerland

Stuart J Mickel