Abstract: A compound selected from 14-O-[((Alkyl-, cycloalkyl-, heterocycloalkyl-, heteoroaryl-, or aryl)-sulfanyl)-acetyl]-12-epi-mutilins, or 14-O-[((Alkyl-, cycloalkyl-, heterocycloalkyl-, heteoroaryl-, or aryl)-oxy)-acetyl]-12-epi-mutilins, wherein 12-epi-mutilin is characterized in that the mutilin ring at position 12 is substituted by two substituents, the first substituent at position 12 of the mutilin ring is a methyl group which methyl group has the inverse stereochemistry compared with the stereochemistry of the methyl group at position 12 of the naturally occurring pleuromutilin ring, the second substituent at position 12 of the mutilin ring is a hydrocarbon group comprising at least one nitrogen atom and all other substituents of the mutilin ring having the same stereochemistry compared with the stereochemistry of the substituents at the corresponding positions in the naturally occurring pleuromutilin ring; optionally in the form of a salt and/or solvate, wherein the naturally occurring pleuromutilin is of

Abstract: Compounds selected from the group of N-unsubstituted or N-alkylated or N-acylated 14-O-[(amino(C0-4)alkyl-hydroxy-cycloalkyl- or bicycloalkylsulfanyl)-acetyl]-mutilins which are 14-O-[(amino(C0-4)alkyl-hydroxy-cyclobutylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cyclopentylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cycloheptylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cyclooctylsulfanyl)-acetyl]-mutilins, or 14-O-[(amino(C0-4)alkyl-hydroxy-bicycloalkylsulfanyl)-acetyl]-mutilins, optionally in the form of a salt and/or a solvate, a pharmaceutical compositions comprising such compounds and their use as pharmaceuticals, e.g. for the treatment of microbial infections and for the treatment of acne, optionally in combination with other pharmaceutically active agents.

Abstract: Process for the preparation of a compound of formula I in the form of a single stereoisomer in crystalline form, comprising deprotecting the amine group in a compound of formula IIa or in a mixture of a compound of formula IIa with a compound of formula IIb and isolating a compound of formula I from the reaction mixture; compounds and salts of compounds of formula I in crystalline form; pharmaceutical compositions comprising such salts; processes for the preparation of intermediates and intermediates in a process for the preparation of a compound of formula I.

Abstract: The present invention relates to compounds of formula I and to compounds of formula II wherein the substituents have various meanings. These compounds are useful as beta lactamase inhibitors.

Abstract: A compound of formula (I) wherein Y is oxygen or sulfur, and X1, X2 and X3 are independently of each other hydrogen, halogen, hydroxy or linear or branched (C1-6)-alkoxy, or hydroxy-(C1-6)alkyl or (C1-6)alkoxy-(C1-6)alkyl, mono- or dihalogenated (C1-6)-alkyl, amino(C1-6)-alkyl, hydroxy(C1-6)-alkyl, with one of the two provisos that: (1) at least of X1, X2 and X3 is other than hydrogen, and (2) X2 is other than hydroxy, when X1 and X3 are hydrogen.

Abstract: A compound of formula wherein PROT is an amine protecting group and PROT? is hydrogen; or PROT and PROT? together with the nitrogen atom to which they are attached form a heterocyclic ring as an amine protecting group, and PROT? is a thiol protecting group, processes for its production, intermediates in their production and production of intermediates in stereoisomerically pure form, and their use for the production of pharmaceutically active compounds.

Abstract: Pleuromutilin derivative compounds of the following formula, and uses thereof for the treatment of diseases mediated by microbes, are disclosed:

Abstract: A process for the preparation of 14-O—[(N-(3-methyl-2-amino-butyryl-piperidinyl)sulfanyl)acetyl]mutilins of formula feasible for large-scale production of high purity products, and wherein the carbon atom at the piperidine ring attached to the sulphur atom is either in the (S)-configuration or in the (R)-configuration, and a new crystalline form of 14-O—[(N-3-methyl-2-(R)-amino-butyryl-piperidine-3(S)-yl)sulfanyl)acetyl]mutilin-hydrochloride.

Abstract: Compounds selected from the group of N-unsubstituted or N-alkylated or N-acylated 14-O-[(amino(C0-4)alkyl-hydroxy-cycloalkyl- or bicycloalkylsulfanyl)-acetyl]-mutilins which are 14-O-[(amino(C0-4)alkyl-hydroxy-cyclobutylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cyclopentylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cycloheptylsulfanyl)-acetyl]-mutilins, 14-O-[(amino(C0-4)alkyl-hydroxy-cyclooctylsulfanyl)-acetyl]-mutilins, or 14-O-[(amino(C0-4)alkyl-hydroxy-bicycloalkylsulfanyl)-acetyl]-mutilins, optionally in the form of a salt and/or a solvate, a pharmaceutical compositions comprising such compounds and their use as pharmaceuticals, e.g. for the treatment of microbial infections and for the treatment of acne, optionally in combination with other pharmaceutically active agents.

Abstract: Process for the preparation of a compound of formula I in the form of a single stereoisomer in crystalline form, comprising deprotecting the amine group in a compound of formula IIa or in a mixture of a compound of formula IIa with a compound of formula IIb and isolating a compound of formula I from the reaction mixture; compounds and salts of compounds of formula I in crystalline form; pharmaceutical compositions comprising such salts; processes for the preparation of intermediates and intermediates in a process for the preparation of a compound of formula I.

Abstract: A compound of formula wherein PROT is an amine protecting group and PROT? is hydrogen; or PROT and PROT? together with the nitrogen atom to which they are attached form a heterocyclic ring as an amine protecting group, and PROT? is a thiol protecting group, processes for its production, intermediates in their production and production of intermediates in stereoisomerically pure form, and their use for the production of pharmaceutically active compounds.

Abstract: A process for the preparation of 14-O—[(N-(3-methyl-2-amino-butyryl-piperidinyl)sulfanyl)acetyl]mutilins of formula feasible for large-scale production of high purity products, and wherein the carbon atom at the piperidine ring attached to the sulphur atom is either in the (S)-configuration or in the (R)-configuration, and a new crystalline form of 14-O—[(N-3-methyl-2-(R)-amino-butyryl-piperidine-3(S)-yl)sulfanyl)acetyl]mutilin-hydrochloride.

Abstract: The present invention relates to compounds selected from the group consisting of 14-0-[((Mono- or dialkylamino)-cycloalkylsulfanyl- or -cycloalkyl-oxy)-acetyl, -thioacetyl or -imino-oxy]-mutilins, 14-O-[((Cycloalkyl- or heterocyclylamino)-cycloalkylsulfanyl- or -cycloalkyl-oxy)-acetyl, -thioaceyl or -imino-oxy]-mutilins, 14-O-[((Heterocyc-N-yl-cycloalkyl)-sulfanyl- or -oxy)-acetyl, -thioacetyl or -imino-oxy]-mutilins, 14-O-[(((Mono- or dialkylamino)-cycloalkyl)-alkylsulfanyl- or -alkyl-oxy)-acetyl, -thioacetyl or -imino-oxy]-mutilins, 14-O-[(((Cycloalkyl- or heterocyclylamino)-cycloalkyl)-alkylsulfanyl- or -alkyl-oxy)-acetyl, -thioacetyl or -imino-oxy]-mutilins, and 14-O-[((Heterocyc-N-yl-cycloalkyl)-alkylsulfanyl- or -alkyl-oxy)-acetyl, -thioacetyl or -imino-oxy]-mutilins, and their use as pharmaceuticals.

Abstract: A process for the preparation of 14-O-[(N-(3-methyl-2-amino-butyryl-piperidinyl)sulfanyl) acetyl]mutilins of formula (I) feasible for large-scale production of high purity products, and wherein the carbon atom at the piperidine ring attached to the sulphur atom is either in the (S)-configuration or in the (R)-configuration, and a new crystalline form of 14-O-[(N-3-methyl-2-(R)-amino-butyryl-piperidine-3(S)-yl)sulfanyl)acetyl]mutilin-hydrochloride.

Abstract: The present invention relates to compounds of formula I and to compounds of formula II wherein the substituents have various meanings. These compounds are useful as beta lactamase inhibitors.

Abstract: Compounds of formula (I), which are 14-O-{[(optionally substituted hydroxy)cyclohexyl)sulfanyl]acetyl}mutilins further substituted at the cyclohexyl group by an acylated amino group, salts and solvates thereof, pharmaceutical compositions comprising such compounds and their use as a pharmaceutical, e.g. for the treatment of diseases mediated by microbes and for the treatment of inflammation where microbes are mediating said inflammation.

Abstract: A compound of formula (I) or of formula (II) wherein X is oxygen or sulfur, and Y is a residue of pipecolic acid or a residue of an amino acid, preferably a naturally occurring amino acid.

Abstract: Disclosed are pleuromutilin derivatives of formula (I) and their use in the treatment of diseases mediated by microbes.

Abstract: A method of preventing or treating diseases caused by Mycobacterium, comprising administering to a subject in need of such treatment an effective amount of a pleuromutilin.

Abstract: A method of preventing or treating diseases caused by Mycobacterium, comprising administering to a subject in need of such treatment an effective amount of a pleuromutilin.