The invention provides methods of increasing immune response by inducing iron- dependent cellular disassembly. The increase in immune response may be used, for example, for treatment of infection or cancer. The invention also provides screening assays for identification of compounds that induce iron-dependent cellular disassembly and are also immuno stimulatory agents. The invention further provides methods for identifying immuno stimulatory agents produced by cells undergoing iron-dependent cellular disassembly.

Increasing immune activity through modulation of postcellular signaling factors

The invention discloses a compound with a piperine skeleton structure as well as preparation and application of the compound, wherein the structural formulas of the compound are shown as a formula I-1and a formula I-2; in the formulas, R1 is hydrogen, halogen, nitryl or cyano, or substituted or unsubstituted hydroxyl, amino, carboxyl, ester group, hydrosulfenyl, acylamino, ureido, C1-C5 straight-chain or branched-chain alkyl and C1-C5 alkoxy; R2 is hydrogen, halogen, nitro or cyano, or substituted or unsubstituted hydroxyl, amino, carboxyl, ester group, hydrosulfenyl, acylamino, ureido, phenyl, aryl and aromatic heterocyclic group, or substituted or unsubstituted C1-C5 straight-chain or branched-chain alkyl, or substituted or unsubstituted C1-C5 alkoxy, or substituted or unsubstituted C6-C30 aryl, fused ring and fused heterocyclic ring. As a chitinase inhibitor, the compound provided by the invention has the advantages of high activity, good broad spectrum and easiness in synthesis, and shows excellent insecticidal ability and insecticidal spectrum.

Compound with piperine skeleton structure as well as preparation and application thereof

The present invention relates to a 3,4-methylenedioxyphenyl substituted tetrahydro-beta-carboline piperazine dione derivative and uses thereof, and specifically discloses a compound represented by a formula I, or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, wherein each group is defined in the specification. According to the present invention, the compound has dual inhibitory activity on acetylcholinesterase and phosphodiesterase 5, and has good blood-brain barrier permeability, such that the compound can be used for preparing drugs for treatment and/or prevention ofAlzheimer's diseases. The formula I is defined in the specification.

3,4-methylenedioxyphenyl substituted tetrahydro-beta-carboline piperazine dione derivative and uses thereof

The invention relates to substituted pyrimidine compounds and an application thereof. The substituted pyrimidine compounds are compounds shown in a formula I (the specific structure is shown in the specification or claims), stereoisomers of the compounds or pharmaceutically acceptable salts of the compounds. An in-vitro activity test proves that the substituted pyrimidine compounds have cholinesterase inhibiting activity, metal ion chelation, inhibition of generation of metal ion induced free radicals, inhibition of metal ion induced Abeta aggregation and the like. Therefore, the substituted pyrimidine compounds are expected to be used for preparing Alzheimer's disease treating and/or preventing drugs.

Substituted pyrimidine compounds and application thereof

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3,4-methylenedioxyphenyl substituted tetrahydro-beta-carboline piperazine dione derivative and uses thereof

Substituted pyrimidine compounds and application thereof