摘要:
A subject of the invention is a preparation process for the products of formula (I): ##STR1## in which R.sub.1 and R.sub.2 represent in particular hydrogen, cyano, halogen or amino,R.sub.3 represents in particular hydrogen or hydroxyl alkyl,R.sub.4 and R.sub.5 represent in particular optionally substituted alkyl,X and y represent oxygen or sulphur, characterized in that a product of formula (A): ##STR2## is prepared in which W represents a halogen atom or a hydantoin derivative,which is subjected to various reactions in order to obtain the products of formula (I), all their isomers and their salts.
摘要:
A compound of the formula ##STR1## wherein alc.sub.1, alc.sub.2 and alc.sub.3 are alkyl of up to 8 carbon atoms, n is an integer from 0 to 8, R.sub.1 and R.sub.2 are O-alkyl of up to 8 carbon atoms, or form together with the carbon atom to which they are linked a cyclic acetal which are useful intermediates to produce the compounds of the formula ##STR2##
摘要:
The invention relates to a novel process for preparing compounds of the formula (IV) or (I): from the racemic alkoxyfuranone of the formula (II): R1 and R2 being as defined in the description, to the novel compounds of the formula (IV) as well as to the intermediate compounds of this process, and to the use of the compounds of the formula (IV) or (I) in the process for the synthesis of compounds which inhibit interleukin-1beta converting enzyme.
摘要:
The invention concerns a method for preparing compounds of formula (I) wherein R represents a hydrogen atom or an allyl radical containing up to 8 carbon atoms, characterised in that it consists in subjecting a compound of formula (II) wherein alc represents the residue of an alkyl radical containing up to 4 carbon atoms to the action of a compound of formula (III): RCONH2, wherein R retains its previous meaning, to obtain the compound of formula (IV) wherein R retains its previous meaning which is subjected to cyclization to obtain the desired product of formula (I).
摘要:
A compound in all possible stereoisomeric forms and their mixtures of the formula ##STR1## wherein X is selected from the group consisting of hydrogen, --CN, alkyl, alkenyl and alkynyl of up to 4 carbon atoms and aralkynyl of up to 10 carbon atoms, Y is selected from the group consisting of halogen, --CF.sub.3, --CH.sub.2 F and --CHF.sub.2 and R.sub.1 is hydrogen and R.sub.2 is halogen or R.sub.1 and R.sub.2 are --CF.sub.3 or R.sub.1 and R.sub.2 are individually halogen.