Abstract: The invention relates to N2,N6-disubstituted-9-(2-oxacycloalkyl)-9H-purine-2, 6-diamine derivatives and their use as drugs and cosmetics. The compounds of the present invention exhibit a number of biological activities associated with oxidative stress inhibition, especially anti-aging, anti-inflammatory and anti-neurodegenerative biological activities. The invention also relates to cosmetic and pharmaceutical compositions containing such derivatives as active agents.

Abstract: Adenine derivatives substituted at the C2, N6, and N9 purine positions having antisenescent and combined photoprotective UVA/UVB effects. These substances are particularly suitable as anti-senescent and UV-photoprotective component in cosmetic preparations, plant protection preparations and in preparations for the treatment/application of tissue cultures.

Abstract: The invention relates to substituted 6-anilino-9-heterocyclylpurine derivatives of formula I wherein R denotes one to five substituents independently selected from the group hydrogen, halogen, hydroxy, amino, alkyloxy and alkyl group, R2 is selected from the group comprising amino, halogen, hydroxy, thio, and alkylthio group, Cyc is five- or six-membered heterocyclic ring containing one oxygen atom. The derivatives are useful for inhibition of plant stress.

Abstract: The invention relates to N2,N6-disubstituted-9-(2-oxacycloalkyl)-9H-purine-2, 6-diamine derivatives and their use as drugs and cosmetics. The compounds of the present invention exhibit a number of biological activities associated with oxidative stress inhibition, especially anti-aging, anti-inflammatory and anti-neurodegenerative biological activities. The invention also relates to cosmetic and pharmaceutical compositions containing such derivatives as active agents.

Abstract: Adenine derivatives substituted at the C2, N6, and N9 purine positions having antisenescent and combined photoprotective UVA/UVB effects.

Abstract: 6-aryl-9-glycosidpurines of general formula I and pharmaceutically acceptable salts thereof with alkali metals, ammonia, amines, or addition salts with acids, wherein Gly represents ?-D-arabinofuranosyl or ?-D-2?-deoxyribofuranosyl, Ar represents benzyl or furfuryl, each of which can be unsubstituted or substituted by one or more, preferably one to three, substituents selected from the group comprising hydroxyl, alkyl, halogen, alkoxy, amino, mercapto, carboxyl, cyano, amido, sulfo, sulfamido, acyl, acylamino, acyloxy, alkylamino, dialkylamino, alkylmercapto, trifluoromethyl, trifluoromethoxy, for use as antisenescent and UV protective compounds in animals.

Abstract: Substituted 1,2,3-thiadiazol-5yl-urea derivatives, their use as anti-senescence and anti-stress factors of plant cells, organs and the whole plant, and preparations containing these derivatives.

Abstract: The invention relates to substituted 6-anilino-9-heterocyclylpurine derivatives of formula I wherein R denotes one to five substituents independently selected from the group hydrogen, halogen, hydroxy, amino, alkyloxy and alkyl group, R2 is selected from the group comprising amino, halogen, hydroxy, thio, and alkylthio group, Cyc is five- or six-membered heterocyclic ring containing one oxygen atom. The derivatives are useful for inhibition of plant stress.

Abstract: 6-aryl-9-glycosidpurines of general formula I and pharmaceutically acceptable salts thereof with alkali metals, ammonia, amines, or addition salts with acids, wherein Gly represents ?-D-arabinofuranosyl or ?-D-2?-deoxyribofuranosyl, Ar represents benzyl or furfuryl, each of which can be unsubstituted or substituted by one or more, preferably one to three, substituents selected from the group comprising hydroxyl, alkyl, halogen, alkoxy, amino, mercapto, carboxyl, cyano, amido, sulfo, sulfamido, acyl, acylamino, acyloxy, alkylamino, dialkylamino, alkylmercapto, trifluoromethyl, trifluoromethoxy, for use as antisenescent and UV protective compounds in animals.

Abstract: Substituted 1,2,3-thiadiazol-5yl-urea derivatives, their use as anti-senescence and anti-stress factors of plant cells, organs and the whole plant, and preparations containing these derivatives.

Abstract: The invention relates to 6-substituted 9-halogenalkyl purine derivatives of the general formula I wherein R6 is selected from the group comprising —NH-furfuryl, —NH-(4-hydroxy-3-methylbut-2-en-1-yl), —NH-(3-methylbut-2-en-1-yl), —NH-(4-hydroxy-3-methylbutyl), —NH-(4-hydroxy-1,3-dimethylbut-2-en-1-yl), —NH-(4-hydroxy-1,3-dimethylbutyl), —NH-benzyl, —NH-phenyl, wherein benzyl, furfuryl and phenyl can be unsubstituted or optionally substituted with 1 to 3 substituents selected from the group comprising hydroxy, halogen, methyl and methoxy, and R9 is selected from the group comprising C1-C3 alkyl or C1-C3 alkenyl wherein each of the groups is substituted with one or more halogen atoms, for use in the regulation of growth and development of plant cells, organs and/or whole plants. The invention also relates to preparations containing these derivatives and to novel to 6-substituted 9-halogenalkyl purines.

Abstract: The invention relates to substitution derivatives of N6-benzyladenosine-5?-monophosphate of the general formula I, wherein (R)n represents 1 to 4 substituents (n is in the range 1-4), which can be the same or different, and R is selected from the group comprising C1 to C8 alkyl, C1 to C8 alkoxy, amino, halogen, hydroxy, mercapto and nitro groups, and the pharmaceutically acceptable salts thereof. This invention also relates to methods of their preparation, their use as medicaments and in other biotechnological applications, and a therapeutic composition containing these derivatives.

Abstract: A method of treatment using 2-substituted-6-(substituted benzylamino)purine riboside derivatives of the general formula I. These compounds possess antiapoptotic, anti-inflammatory and differentiating activities.

Abstract: Certain 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts of the general formula are provided wherein R6 and R9 are as defined in the specification. These 6,9-disubstituted purine derivatives and their pharmaceutically acceptable salts are useful in compositions for treating mammalian cells, and especially human skin cells, in order to ameliorate the adverse effects of aging, treat skin disease states, treat immunological responses resulting from or associated with inflammation, and the like.

Abstract: The invention relates to 6-substituted 9-halogenalkyl purine derivatives of the general formula I wherein R6 is selected from the group comprising —NH-furfuryl, —NH-(4-hydroxy-3-methylbut-2-en-1-yl), —NH-(3-methylbut-2-en-1-yl), —NH-(4-hydroxy-3-methylbutyl), —NH-(4-hydroxy-1,3-dimethylbut-2-en-1-yl), —NH-(4-hydroxy-1,3-dimethylbutyl), —NH-benzyl, —NH-phenyl, wherein benzyl, furfuryl and phenyl can be unsubstituted or optionally substituted with 1 to 3 substituents selected from the group comprising hydroxy, halogen, methyl and methoxy, and R9 is selected from the group comprising C1-C3 alkyl or C1-C3 alkenyl wherein each of the groups is substituted with one or more halogen atoms, for use in the regulation of growth and development of plant cells, organs and/or whole plants. The invention also relates to preparations containing these derivatives and to novel to 6-substituted 9-halogenalkyl purines.

Abstract: The present invention provides methods and compositions for countering the adverse effects of aging on mammalian cells in vitro and in vivo, especially human skin cells and human skin, and treatment of hyperproliferative and related skin diseases in mammals by administering compositions containing 6,9-disubstituted purine derivatives.

Abstract: 6,8-Disubstituted purines which can be used in drug and cosmetic compositions and/or applications are provided. These 6,8-disubstituted purines have a wide range of biological activities, including for example anti-inflammatory, anti-senescent, as well as well as other activities which are especially useful in pharmaceutical and cosmetic applications. The 6,8-disubstituted purine compounds and compositions containing such 6,8-disubstituted purines provide growth-regulatory, differentiating, antisenescent and antiaging properties with improved selectivities and efficiencies and lower toxicities than analogues known heretofore.

Abstract: Substitution derivatives of N6-benzyladenosine-5?-monophosphate of the general formula I, wherein (R)n represents 1 to 4 substituents (n is in the range 1-4), which can be the same or different, and R is selected from the group comprising C1 to C8 alkyl, C1 to C8 alkoxy, amino, halogen, hydroxy, mercapto and nitro groups, and the pharmaceutically acceptable salts thereof. A Method for their preparation, their use as medicaments and in other applications, and a therapeutic composition containing these derivatives is also disclosed.

Abstract: The invention relates to substituted 6-anilinopurine derivatives of the general formula I, wherein R denotes one to five substituents independently selected from the group consisting of hydrogen, halogen, hydroxyl, amino, alkyloxy and alkyl group, and R2 denotes amino, halogen, nitro, thio, alkylthio or alkyl group for use as inhibitors of cytokinin oxidase/dehydrogenase. The invention also relates to the compositions containing these derivatives.

Abstract: The invention relates to 2-substituted-6-(substituted benzylamino)purine riboside derivatives of the general formula I. These compounds possess antiapoptotic, anti-inflammatory and differentiating activities. The invention relates also to the compositions, which contain these derivatives as active ingredients.