Patent ID: 6878820

Claim:
A group A streptogramin compound of formula (I) or a salt thereof: wherein: R 1 represents a halogen atom, a hydroxyl, alkyloxy, azido or thiocyanato radical, a radical —NR′R,″ or a radical —OR′″, wherein R′ represents a hydrogen atom or a methyl radical; R″ represents a hydrogen atom, an alkyl, cycloalkyl, allyl, propynyl or benzyl radical, or a radical —NR°R°°, wherein R° and R°° each represent a methyl radical, or form, together with the nitrogen atom to which they are attached, a saturated or unsaturated 4- or 5-membered heterocycle comprising at least one hetero atom chosen from nitrogen, oxygen and sulfur, and R′″ represents a hydrogen atom or an alkyl, cycloalkyl, allyl, propynyl or benzyl radical; and R′ 1 represents a hydrogen atom, or R 1 and R′ 1 together form an oxo radical, R 2 represents a halogen atom, an alkyl, alkenyl, alkynyl, phenyl or heteroaryl radical, or an alkylthio, phenylthio or heteroarylthio radical, wherein said heteroaryl radical is chosen from pyridyl, thienyl, furyl, pyrrolyl, imidazolyl, pyrazinyl, quinolyl, isoquinolyl, indolyl, oxazolyl, thiazolyl, pyrazolyl, indazolyl, thiadiazolyl or oxadiazolyl, R 3 represents a hydrogen atom or a methyl or ethyl radical, and the bond {umlaut over (-)}{umlaut over ( )}{umlaut over (-)}{umlaut over ( )}{umlaut over (-)} represents a single bond (27R stereochemistry) or a double bond, the alkyl radicals containing from 1 to 6 carbons in a straight or branched chain, the alkenyl radicals containing from 2 to 6 carbons in a straight or branched chain, and the alkynyl radicals containing from 2 to 6 carbons in a straight or branched chain.