Abstract: The purpose of the present invention is to provide novel complexes that improve the effect of nucleic acid medicines. Provided is a complex in which a multibranched lipid(s) binds through a linker to a strand of an oligonucleotide comprising a nucleic acid medicine having suppressing activity of the target gene expression.

Abstract: The purpose of the present invention is to provide novel miR-143 derivatives described herein that can be used as oligonucleotide therapeutics.

Abstract: The purpose of the present invention is to provide double-stranded oligonucleotides comprising the CpG oligonucleotide mentioned below, as a nucleic acid derivative having an immunostimulatory activity. An adjuvant comprising a double-stranded oligonucleotide, wherein a first strand is a CpG oligonucleotide consisting of 8 to 50 nucleotides, a second strand is an oligonucleotide consisting of 8 to 60 nucleotides and comprising a sequence capable of hybridizing with the first strand, and a lipid binds to the second strand through a linker.

Abstract: The purpose of the present invention is to provide novel miR-143 derivatives described herein that can be used as oligonucleotide therapeutics.

Abstract: The purpose of the present invention is to provide double-stranded oligonucleotides comprising the CpG oligonucleotide mentioned below, as a nucleic acid derivative having an immunostimulatory activity. An adjuvant comprising a double-stranded oligonucleotide, wherein a first strand is a CpG oligonucleotide consisting of 8 to 50 nucleotides, a second strand is an oligonucleotide consisting of 8 to 60 nucleotides and comprising a sequence capable of hybridizing with the first strand, and a lipid binds to the second strand through a linker.

Abstract: The present invention provides compounds shown by the formula: wherein Y1 is CR6 or N, Y2 is CR7 or N, Y3 is CR8 or N, R6, R7 and R8 are each independently, a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like, Bx is a nucleic acid base moiety, Z1 and Z2 are each independently, a hydrogen atom, a hydroxyl protecting group or a reactive phosphorus group, R1 to R5 are each independently, a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like, and n is an integer of 0 to 3, or salts thereof, that are novel nucleosides or nucleotides that can be useful as materials for synthesizing nucleic acid pharmaceuticals.

Abstract: The present invention provides compounds shown by the formula: wherein Y1 is CR6 or N, Y2 is CR7 or N, Y3 is CR8 or N, R6, R7 and R8 are each independently, a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like, Bx is a nucleic acid base moiety, Z1 and Z2 are each independently, a hydrogen atom, a hydroxyl protecting group or a reactive phosphorus group, R1 to R5 are each independently, a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like, and n is an integer of 0 to 3, or salts thereof, that are novel nucleosides or nucleotides that can be useful as materials for synthesizing nucleic acid pharmaceuticals.

Abstract: The present invention provides compounds shown by the formula: wherein Y1-Y2 is S(?O)2—NR6, NR6—S(?O)2 or the like, R6 is a hydrogen atom, substituted or unsubstituted alkyl or the like, Bx is a nucleic acid base moiety, Z1 and Z2 are each independently, a hydrogen atom, a hydroxyl protecting group or a reactive phosphorus group, R1 to R5 are each independently, a hydrogen atom, halogen, cyano, substituted or unsubstituted alkyl or the like, and n is an integer of 0 to 3, or salts thereof, that are novel nucleosides or nucleotides that can be useful as materials for synthesizing nucleic acid pharmaceuticals.

Abstract: The present invention provides, for example, the following compound: wherein ring Z is pyridine or a carbocycle, each of which is substituted or unsubstituted, ring A is a carbocycle or a heterocycle, each of which is substituted or unsubstituted, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R4a and R4b are each independently hydrogen or substituted or unsubstituted alkyl or the like, its pharmaceutically acceptable salt or a solvate thereof having an effect of inhibiting amyloid ? production, especially a BACE1 inhibitory activity, and useful as a medicament for treating diseases induced by production, secretion or deposition of amyloid ? proteins.

Abstract: The present invention provides a compound of formula (I): wherein —X? is —CR7? or —N?, ring B is a substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, R1 is substituted or unsubstituted alkyl or the like, R2 a and R2 b are each independently hydrogen, substituted or unsubstituted alkyl or the like, R3 and R4 are each independently hydrogen, halogen, substituted or unsubstituted alkyl or the like, R5 is hydrogen, substituted or unsubstituted alkyl or the like, each R6 is independently halogen, hydroxy, substituted or unsubstituted alkyl or the like, R7 is hydrogen, halogen, hydroxy, substituted or unsubstituted alkyl or the like, p is an integer of 0 to 3, or a pharmaceutically acceptable salt thereof which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins.

Abstract: The present invention provides a compound of formula (I): wherein —X? is —CR7? or —N?, ring B is a substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, R1 is substituted or unsubstituted alkyl or the like, R2 a and R2 b are each independently hydrogen, substituted or unsubstituted alkyl or the like, R3 and R4 are each independently hydrogen, halogen, substituted or unsubstituted alkyl or the like, R5 is hydrogen, substituted or unsubstituted alkyl or the like, each R6 is independently halogen, hydroxy, substituted or unsubstituted alkyl or the like, R7 is hydrogen, halogen, hydroxy, substituted or unsubstituted alkyl or the like, p is an integer of 0 to 3, or a pharmaceutically acceptable salt thereof which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins.

Abstract: The present invention provides, for example, the following compound: wherein ring Z is pyridine or a carbocycle, each of which is substituted or unsubstituted, ring A is a carbocycle or a heterocycle, each of which is substituted or unsubstituted, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R4a and R4b are each independently hydrogen or substituted or unsubstituted alkyl or the like, its pharmaceutically acceptable salt or a solvate thereof having an effect of inhibiting amyloid ? production, especially a BACE1 inhibitory activity, and useful as a medicament for treating diseases induced by production, secretion or deposition of amyloid ? proteins.

Abstract: Provided is a compound or a pharmaceutically acceptable salt thereof which inhibits the activity of PI3K to regulate many biological processes including the growth, differentiation, survival, proliferation, migration, metabolism, and the like of cells and is therefore useful for the prophylaxis/therapy of diseases including inflammatory diseases, arteriosclerosis, vascular/circulatory diseases, cancer/tumors, immune system diseases, cell proliferative diseases, infectious diseases, and the like. The above problem was solved by providing a urea derivative shown in the present specification, or a pharmaceutically acceptable salt thereof.

Abstract: Provided are a compound represented by general formula (1) and having a TTK inhibitory action and a medicine containing the compound. In formula (1), (X, Y, V, W) is (—N?, ?CR1—, ?N—, —CR7?), (—CR2?, ?N—, ?N—, —CR7?), etc.; A is an (un)substituted aromatic hydrocarbon ring, etc.; L is a single bond, —C(?O)—NRA—, etc.; Z is a group represented by the formula —NR3R4 or a group represented by the formula —OR5; R1 to R3, R6, and R7 each is a hydrogen atom, etc.; R4 and R5 each is an (un)substituted alkyl, etc.; and R8 is an (un)substituted cycloalkyl, etc.

Abstract: It is an object of the present invention to provide a compound or a pharmaceutically acceptable salt thereof which inhibits the activity of PI3K to regulate many biological processes including the growth, differentiation, survival, proliferation, migration, metabolism, and the like of cells and is therefore useful for the prophylaxis/therapy of diseases including inflammatory diseases, arteriosclerosis, vascular/circulatory diseases, cancer/tumors, immune system diseases, cell proliferative diseases, infectious diseases, and the like. The above problem was solved by providing a ring-fused azole compound shown in the present specification, or a pharmaceutically acceptable salt thereof.

Abstract: The purpose of the present invention is to provide a compound or a pharmaceutically acceptable salt thereof which inhibits the activity of PI3K to regulate many biological processes including the growth, differentiation, survival, proliferation, migration, metabolism, and the like of cells and is therefore useful for the prevention/treatment of diseases including inflammatory diseases, arteriosclerosis, vascular/circulatory diseases, cancer/tumors, immune system diseases, cell proliferative diseases, infectious diseases, and the like. This was achieved by providing a substituted 2-amino-5,6-nitrogenated fused ring compound shown in the present specification, or a pharmaceutically acceptable salt thereof.