Abstract: Disclosed are novel unsaturated phosphonate derivatives of certain purines or pyrimidines useful as antiviral agents, methods useful for their preparation and use of these compounds as antiviral agents effective against DNA viruses, retroviruses and viruses involved in tumor formation.

Abstract: Compounds of formula (I): 1

Abstract: Compound of formula (I): wherein: X represents a bond or alkylene, CO, S(O)n, —S(O)n—A1—, —CO—A1—, —A—S(O)n—A′1— or —A1—CO—A′1—, Y represents aryl, heteroaryl, cycloalkyl or heterocycloalkyl, each unsubstituted or substituted, R1, R2, R3 and R4 each independently of the others represent hydrogen or aryl, heteroaryl, cycloalkyl or heterocycloalkyl, each unsubstituted or substituted, or R1, R2, R3 and R4, taken in pairs, together form a bond, or form a fused benzene ring or a fused aromatic or partially unsaturated heterocycle, T represents —CH(R5)—, —N(R5)— or —N(R5)CO—, V represents hydrogen or unsubstituted or substituted aryl or heteroaryl, A2 represents [C(R6)(R′6)]p, R7 and R8 are as defined in the description, their isomers and addition salts thereof with a pharmaceutically acceptable acid or base and medicinal products containing t

Abstract: The invention concerns a compound of formula (I) wherein: n is equal to 0 or 1; R1, R2, R3, R4 represent a hydrogen or an alkyl group, or R1 and R3 together form a cycloalkyl group; R5 represents a hydrogen, an alkyl, cycloalkyl, cycloalkylalkyl, aryl, arylalkyl, heteroaryl, hetereoalkylalkyl, hetereocycloalkyl, hetereocycloalkylalkyl group (all optionally substituted), or a —CO—R6 group; and R6 represents R7 or OR7 or NR7R8, with R7 representing an aryl, arylalkyl, heteroaryl or heteroarylalkyl, heterocycloalkyl, heterocycloalkylalkyl group (all optionally substituted), and R8 representing an alkyl, aryl, arylalkyl, heteroaryl or heteroarylalkyl (all optionally substituted); or R5 and R6 form with the nitrogen atom and the Z group bearing them a saturated monocyclic, bicyclic or tricyclic group, partially unsaturated or unsaturated, with 5 to 16 chain links containing 1 to 7 heteroatoms and optionally substituted; R10 represents a hydrogen atom or a hydroxy group, and in the latter case R1, R2, R

Abstract: Disclosed are novel unsaturated phosphonate derivatives of certain purines or pyrimidines useful as antiviral agents, methods useful for their preparation and use of these compounds as antiviral agents effective against DNA viruses, retroviruses and viruses involved in tumor formation.

Abstract: Compound of formula (I): 1

Abstract: Compound of formula (I): wherein: R1 represents hydrogen or wherein A is as defined in the description, R2 and R3 each independently represents alkyl, cycloalkyl, heterocycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, cycloalkylalkyl, heterocycloalkylalkyl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl,or optionally substituted aminoalkyl or R2 and R3, together with the carbon atom carrying them, form cycloalkyl or monocyclic heterocyclic group, substituted or unsubstituted, R40 represents hydrogen or a group selected from optionally substituted alkyl, optionally substituted alkenyl and optionally substituted alkynyl or Q or —V—Q wherein V represents alkylene, alkenylene or alkynylene and Q represents optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted heterocycloalkyl,or optionally substituted heteroaryl, R41 and R5 together form a bond or each represents hydrogen, R6,

Abstract: Disclosed are novel unsaturated phosphonate derivatives of certain purines or pyrimidines useful as antiviral agents, methods useful for their preparation and use of these compounds as antiviral agents effective against DNA viruses, retroviruses and viruses involved in tumor formation.

Abstract: Disclosed are novel unsaturated acetylene phosphonate derivatives of certain purines or pyrimidines useful as antiviral agents, methods useful for their preparation and use of these compounds as antiviral agents effective against DNA viruses, retroviruses and viruses involved in tumor formation.

Abstract: This invention relates to a novel synthesis of 4-amino-5-hexenoic acid by thermal rearrangements, and to the novel intermediates produced thereby.

Abstract: This invention relates to a novel synthesis of 4-amino-5-hexenoic acid by thermal rearrangements, and to the novel intermediates produced thereby.

Abstract: This invention relates to a novel synthesis of 4-amino-5-hexenoic acid by thermal rearrangements, and to the novel intermediates produced thereby.

Abstract: The adenosine derivatives represented by the following formula: ##STR1## and the pharmaceutically acceptable salts thereof wherein R is H or C.sub.1 -C.sub.7 alkyl,Q is the moiety of the formula ##STR2## wherein V is H or --COOHX is H, F, Cl, Br, andZ is H, F, Cl, or Br.These compounds are inhibitors of S-adenosylmethione decarboxylase and are useful for treating parasitic infections.

Abstract: This invention relates to a novel synthesis of 4-amino-5-hexenoic acid by thermal rearrangements, and to the novel intermediates produced thereby.

Abstract: (R,S)- and (S)-4-amino-hepta-5,6-dienoic acid are novel inhibitors of gamma-aminobutyric acid transaminase (GABA-T).

Abstract: Novel fluorinated diamino-heptene and-heptyne derivatives are inhibitors of ornithine decarboxylase enzyme involved in polyamine formation and have the following general Formula I: ##STR1## wherein: Y represents CH.sub.2 .dbd.CH-- or CH.tbd.C--; andp represents 1 or 2.