摘要:
Di-p-toluoyl tartrate, di-t-butylacetyl tartrate, di-butyryl tartrate and di-i-valeryl tartrate of (dialkylamino-2 alkyl)sulphonyl-26 pristinamycin II.sub.B having general formula (I) wherein Alk represents a straight or branched alkylene radical and R represents straight or branched alkyl radicals, said radicals having from 1 to 10 carbon atoms.
摘要:
The invention provides compounds of formula: ##STR1## in which R=H, halogen, alkyl, alkyloxy, alkythio, NH.sub.2, alkylamino, dialkylamino or CF.sub.3, R.sub.3 =H or alkyl,either R.sub.4 and R.sub.5 =H and R.sub.1 and R.sub.2 =H or alkyl, optionally substituted by alkenyl (2 to 4 C) or alternatively R.sub.1 and R.sub.2 form together a saturated heterocyclic ring containing 4 to 7 ring members and optionally containing another heteroatom such as O, S or N optionally substituted by alkyl,or R.sub.4 =H, R.sub.1 =H or alkyl and R.sub.2 and R.sub.5 together form an alkylene (3 to 4 C) radical and(i) either A=alkyl or phenyl which is unsubstituted or substituted by one or two substituents chosen from halogen, alkyl, alkyloxy, alkylthio, NH.sub.2, alkylamino, dialkylamino, NO.sub.2 or CF.sub.3 or alternatively A=pyridyl, benzyl or cycloalkyl (3 to 6 C), Y=S, SO or SO.sub.2 or a radical: ##STR2## in which R.sub.6 =H or alkyl and R.sub.7 =H or alkylcarbonyl, alkyloxycarbonyl, alkylaminocarbonyl or benzoyl, optionally substituted by one or two halogen, alkyl, alkyloxy, alkylthio, NH.sub.2, alkylamino, dialkylamino, NO.sub.2 or CF.sub.3 groups,(ii) or Y and A together form a 1-hydroxycycloalkyl radical, the ring of which contains 5 or 6 C, optionally joined to a benzene ring,it being understood that the alkyl radicals and alkyl parts contains 1 to 4 C as a straight or branched chain, and that the invention relates to all the possible geometric and optical isomers as well as their mixtures.These compounds are useful as antidepressants.
摘要:
The invention provides compounds of formula: ##STR1## in which R=H, halogen, alkyl, alkyloxy, alkythio, NH.sub.2, alkylamino, dialkylamino or CF.sub.3, R.sub.3 =H or alkyl, either R.sub.4 and R.sub.5 =H and R.sub.1 and R.sub.2 =H or alkyl, optionally substituted by alkenyl (2 to 4 C) or alternatively R.sub.1 and R.sub.2 form together a saturated heterocyclic ring containing 4 to 7 ring members and optionally containing another heteroatom such as O, S or N optionally substituted by alkyl, or R.sub.4 =H, R.sub.1 =H or alkyl and R.sub.2 and R.sub.5 together form an alkylene (3 to 4 C) radical and (i) either A=alkyl or phenyl which is unsubstituted or substituted by one or two substituents chosen from halogen, alkyl, alkyloxy, alkylthio, NH.sub.2, alkylamino, dialkylamino, NO.sub.2 or CF.sub.3 or alternatively A=pyridyl, benzyl or cycloalkyl (3 to 6C), Y=S, SO or SO.sub.2 or a radical: ##STR2## in which R.sub.6 =H or alkyl and R.sub.7 =H or alkylcarbonyl, alkyloxycarbonyl, alkylaminocarbonyl or benzoyl, optionally substituted by one or two halogen, alkyl, alkyloxy, alkylthio, NH.sub.2, alkylamino, dialkylamino, NO.sub.2 or CF.sub.3 groups, (ii) or Y and A together form a 1-hydroxycycloalkyl radical, the ring of which contains 5 or 6 C, optionally joined to a benzene ring, it being understood that the alkyl radicals and alkyl parts contain 1 to 4 C as a straight or branched chain, and that the invention relates to all the possible geometric and optical isomers as well as their mixtures.These compounds are useful as antidepressants.
摘要:
Pristinamycin II.sub.B derivatives of formula I in which R represents: ##STR1## either a 4- to 7-membered nitrogen-containing heterocyclic radical, optionally containing 1 or more other hetero atoms chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form, and unsubstituted or substituted by alkyl,or alkyl of 2 to 4 carbon atoms, substituted by 1 or 2 radicals chosen from phenyl, cycloalkylamino or N-alkyl-N-cycloalkylamino having 3 to 6 ring carbon atoms, alkylamino, dialkylamino or dialkylcarbamoyloxy (the alkyl parts of these last 2 radicals being optionally joined to form, with the nitrogen atom to which they are attached, a 4- to 7-membered saturated or unsaturated heterocycle optionally containing another hetero atom chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form, and unsubstituted or substituted by alkyl) or a said alkyl substituted by one or more 4- or 7-membered nitrogen-containing heterocycles optionally containing 1 or 2 other hetero atoms chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form and unsubstituted or substituted by an alkyl radical, the said heterocycles being attached to the alkyl via a carbon atom, at least one of the substituents carried by the alkyl being a nitrogen-containing substituent capable of forming salts,or a [(S)-1-methyl-2-pyrrolidinyl]methyl radical, the aforesaid alkyl radicals being straight-chain or branched and containing, unless otherwise stated, 1 to 10 carbon atoms each, including isomeric forms thereof and mixtures thereof, and the salts thereof, are made by oxidizing a pristinamycin II.sub.B derivative of formula II ##STR2## with potassium peroxymonosulphate.
摘要:
Novel group B streptogramin-like compounds of general formula (I), and a method for preparing streptogramines by mutasynthesis using a mutated micro-organism to influence the biosynthesis of at least one of the precursors of group B streptogramins are disclosed. Novel nucleotide sequences involved in the biosynthesis of said precursors, and their uses, are also disclosed.
摘要:
The invention provides a method for preparing streptogramins using genetically-modified microorganisms to influence the biosynthesis of at least one of the precursors of the group B streptogramins. Cultures of the genetically-modified microorganisms are supplemented with a least one precursor that is different from the streptogramin precursor whose biosynthesis is altered and the streptogramins produced are recovered.
摘要:
Streptogramine derivatives of general formula (I) below, wherein the radical R.sub.1 is a methyl or ethyl radical, the radical R.sub.2 is a bromine or chlorine atom, or is an alkenyl radical with 3 to 5 carbon atoms when R.sub.3 and R.sub.4 are methyl, and one of R.sub.3 and R.sub.4 is a hydrogen atom or a methyl radical and the other is a methyl radical are disclosed. The streptogramine derivatives of general formula (I) have particularly useful antibacterial properties, and may be used in combination with a pristinamycin II derivative. ##STR1##
摘要:
A Streptogramine derivative of formula (I) is disclosed, wherein the symbol Y is a hydrogen atom, a methyl amino or dimethylamino radical, or a protected methylamino radical, and the symbol R represents a methyl or ethyl radical. ##STR1##
摘要:
The invention provides new synergistin derivatives of formula ##STR1## in which Y is hydrogen or dimethylamino and R is a 3- or 4-quinuclidinyl radical, the isomers thereof and their mixtures, and their salts, also the preparation thereof. These compounds may be made by reaction of the corresponding 5-methylene compounds with the appropriate mercaptoquinuclidine. The products of formula (I), optionally combined with pristinamycin II.sub.A or a derivative of pristinamycin II.sub.B of the formula ##STR2## are useful as antimicrobials.
摘要:
Purified form of streptogramines, characterised in that it contains at least one component from group B streptogramines of general formula (I), wherein R1 is Me or Et, R2 is H or OH, and R3 is substituted benzyl of general formula (III), such that 1) if R2 is H, R is NR4R5, wherein one of R4 and R5 is H or an Me radical and the other is Me, and R′ is Cl or Br, or R is (C3-5)alkenyl if R4 and R5 are Me, or 2) R is H and R′ is halogen, alkylamino or dialkylamino, an ether-oxide residue, alkylthio, (C1-3)alkyl or trihalogenomethyl, or R is halogen, (C2-4)alkylamino, (C2-4)dialkylamino or methyl ethyl amino, pyrrolidino alkenyl alkyl amino, dialkylamino, an alkyl cycloalkylmethyl amino radical or in ether-oxide residue, alkylthio, alkylthiomethyl, (C1-6)alkyl, aryl or trihalogenomethyl, and R′ is H, or R is halogen, amino, alkylamino or dialkylamino, an ether-oxide residue, an alkylthio radical, (C1-6)alkyl or trihalogenomethyl and R′ is halogen, alkylamino or dialkylamino, an ether-oxide residue or alkylthio, (C1-3)alkyl, cocrystallised with one or more minor components of group A of general formula (II) wherein R″ is H, Me or Et.