Abstract: An aromatic heterocyclic compound, a pharmaceutical composition and use thereof. Specifically disclosed are a compound as shown in formula I, a stereoisomer thereof, a diastereomer thereof, or a pharmaceutically acceptable salt of any one of the foregoing, or a crystal form or solvate of any one of the foregoing. The aromatic heterocyclic compound has a novel structure, good CDK7 inhibitory activity, and good selectivity.

Abstract: An aromatic heterocyclic compound, and a pharmaceutical composition and an application thereof. Specifically disclosed are a compound as represented by formula I-A, a stereoisomer thereof, a diastereoisomer thereof, or a pharmaceutically acceptable salt of any one of the described substances, or a crystalline form or a solvate of any one of the described substances. The aromatic heterocyclic compound is novel in structure, and has good CDK7 inhibitory activity and good selectivity.

Abstract: The invention relates to oligopeptides used as elicitors of the natural defences of plants in order to control fungal and/or bacterial and/or viral pathogens and/or crop pests, by means of foliar or root application or by injection. According to the invention, said oligopeptides are characterised in that they are obtained by organic or enzymatic synthesis, in that they are heteropolymers and/or homopolymers of protein and/or non-protein amino acids, and in that said amino acids form sequences of said polymers selected for the capacity thereof to form spiral structures.

Abstract: The invention concerns a photopolymerizable composition comprising: at least one epoxyvinylester resin, at least one urethane acrylate resin, at least one organic silicon-free particulate filler having an average particle size less than 10 ?m and a specific surface more than 10 m2/g, at least one photoinidator. Said composition is in particular useful for making dental prosthesis preforms and models.