Ciba-geigy Corporation

Ciba-geigy Ag

Paul Zbinden

Ernst Habicht

Tibur Schmidlin

Peter Buhlmayer

Marc E Ballenegger

Peter B Uhlmayer

The invention relates to N-acyl-N-heterocyclylalkylamino acids of the formula ##STR1## R.sub.1 is C.sub.1 -C.sub.7 alkyl that is unsubstituted or substituted by halogen or by hydroxy, or is C.sub.2 -C.sub.7 -alkenyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloalkoxy, C.sub.1 -C.sub.7 alkoxy or C.sub.3 -C.sub.7 cycloalkyl-C.sub.1 -C.sub.7 alkoxy;

N-acyl-N-heterocyclylalkyamino acids compositions and method of use

Described are 3-hydroxypyridin-4-ones of formula I ##STR1## wherein R.sub.1 -R.sub.4, A and B are as defined in the description. The compounds have valuable pharmaceutical properties and are especially effective as chelators of iron. They can be used to treat excess iron in the bodies of warm-blooded animals.

Hydroxypyridinones

The invention relates to N-acyl-N-heterocyclylalkylamino acids of the formula ##STR1## wherein Y.sub.1 is O, S or N(R) and R is hydrogen or C.sub.1 -C.sub.7 alkyl; X.sub.1 is --CO-- or --S(O).sub.m -- and the index m is 0, 1 or 2; one of the variables X.sub.2 and X.sub.4 is C.sub.1 -C.sub.4 alkylene and the other of the variables X.sub.2 and X.sub.4 is a bond; or each of the variables X.sub.2 and X.sub.4 is a bond; X.sub.3 is C.sub.3 -C.sub.7 cycloalkylidene or the structural element --C(X.sub.a)(X.sub.b)-- and X.sub.a is hydrogen or C.sub.1 -C.sub.7 alkyl and X.sub.b is C.sub.1 -C.sub.7 alkyl; and the rings A, B and C, with the exception of the substituents indicated in the formula, and also aromatic substituents are, independently of one another, unsubstituted or mono- or poly-substituted by substituents selected from the group consisting of halogen, C.sub.1 -C.sub.7 alkyl, C.sub.1 -C.sub.7 alkoxy, C.sub.2 -C.sub.7 alkenyloxy, phenoxy, benzyloxy, trifluoromethyl and S(O).sub.m --R, wherein m is 0, 1 or 2 and R is hydrogen or C.sub.1 -C.sub.7 alkyl; or a salt thereof.

N-acyl-N-heterocyclylalkylamino acid compounds and method of use thereof

The invention relates to N-acyl-N-heterocyclylalkylamino acids of the formula ##STR1## The compounds and their pharmaceutically acceptable salts can be used as antihypertensives, agents for the treatment of glaucoma, or for increasing the flow of the retinal ocular fluid.

N-acyl-n-quinolinyl or isoquinounyl alkylamino acids compositions and

The invention relates to novel benzodioxole derivatives of the general formula I ##STR1## in which R.sub.1 represents an unsubstituted or substituted, aliphatic, aromatic or heteroaromatic radical,

Benzodioxole derivatives, processes for the manufacture thereof and

The invention relates to novel benzodioxole derivatives of the formula I ##STR1## in which R.sub.1 represents an unsubstituted or substituted, aromatic or heteroaromatic radical, alk represents an alkylene or alkylidene radical having a maximum of 5 carbon atoms, n represents O or 1, R.sub.2 and R.sub.3 each represents, independently of the other, hydrogen, lower alkyl, lower alkoxy or halogen, and A represents the radical O-R.sub.4, wherein R.sub.4 represents hydrogen or an unsubstituted or substituted, aliphatic or araliphatic hydrocarbon radical, or A represents the radical ##STR2## in which either R.sub.5 and R.sub.6 each represents, independently of the other, hydrogen or lower alkyl, or R.sub.5 and R.sub.6 are bonded to one another and, together with the adjacent nitrogen atom, represent unsubstituted or lower alkyl-substituted tetra- or hexa-methyleneimino or 4-morpholinyl, to salts of compounds of the formula I in which A represents OR.sub.4 wherein R.sub.4 is hydrogen, with bases, and to acid addition salts of compounds of the formula I in which the radical R.sub.1 has a basic character, and to pharmaceutical compositions that contain them. The novel substances exhibit diuretic and, in addition, uricosuric activity and may be administered, according to the invention, preferably in the form of appropriate pharmaceutical compositions, to mammals for the treatment of oedema and hypertension.

Benzodioxole derivatives

The invention relates to novel dioxaheterocyclic compounds of the formula I ##STR1## in which R.sub.1 represents an unsubstituted or substituted aromatic or heteroaromatic radical or an unsubstituted or lower alkylated, mono- or bi-cyclic cycloaliphatic hydrocarbon radical or an .alpha.-branched aliphatic hydrocarbon radical, each of R.sub.2 and R.sub.3, independently of the other, represents hydrogen or lower alkyl, and each of R.sub.4 and R.sub.5, independently of the other, represents hydrogen, lower alkyl or halogen, and A represents the radical --O--R.sub.6, wherein R.sub.6 represents hydrogen or an unsubstituted or substituted aliphatic or araliphatic hydrocarbon radical or A represents the radical ##STR2## in which each of R.sub.7 and R.sub.8, independently of the other, represents hydrogen or lower alkyl, or R.sub.7 and R.sub.8 are bonded to one another and, together with the adjacent nitrogen atom, represent unsubstituted or lower alkyl-substituted tetra- to hexa-methyleneimino or 4-morpholinyl, and the divalent radical in formula I is either in the 4,5- or the 5,6-position and correspondingly R.sub.4 and R.sub.5 are in positions 6 and 7, or 4 and 7, respectively, of the benzodioxole skeleton, to salts of compounds of the formula I in which A represents OR.sub.6 wherein R.sub.6 represents hydrogen, with bases, as well as acid addition salts of compounds of the formula I in which the radical R.sub.1 is of basic character, and to pharmaceutical compositions containing them. These novel substances have a diuretic activity and, in addition, a uricosuric activity, and can be administered, according to the invention, preferably in the form of corresponding pharmaceutical compositions, to mammals for the treatment of oedema and hypertension.

Dioxaheterocyclic compounds

The invention relates to novel benzodioxole derivatives of the formula I ##STR1## in which R.sub.1 represents an unsubstituted or substituted, aromatic or heteroaromatic radical, alk represents an alkylene or alkylidene radical having a maximum of 5 carbon atoms, n represents 0 or 1, R.sub.2 and R.sub.3 each represents, independently of the other, hydrogen, lower alkyl, lower alkoxy or halogen, and A represents the radical O--R.sub.4, wherein R.sub.4 represents hydrogen or an unsubstituted or substituted, aliphatic or araliphatic hydrocarbon radical, or A represents the radical ##STR2## in which either R.sub.5 and R.sub.6 each represents, independently of the other, hydrogen or lower alkyl, or R.sub.5 and R.sub.6 are bonded to one another and, together with the adjacent nitrogen atom, represent unsubstituted or lower alkyl-substituted tetra- or hexa-methyleneimino or 4-morpholinyl, to salts of compounds of the formula I in which A represents OR.sub.4 wherein R.sub.4 is hydrogen, with bases, and to acid addition salts of compounds of the formula I in which the radical R.sub.1 has a basic character, and to pharmaceutical compositions that contain them. The novel substances exhibit diuretic and, in addition, uricosuric activity and may be administered, according to the invention, preferably in the form of appropriate pharmaceutical compositions, to mammals for the treatment of oedema and hypertension.

Growing community of inventors

Witterswil, Switzerland

Paul Zbinden