Abstract: A system according to the present invention comprises: a power source which generates a first low voltage from a supplied high voltage; a capacitor which suppresses fluctuations in the high voltage; and a first device which operates by using the first low voltage as an electric power source and which increases its own current consumption when supply of the high voltage to the power source has stopped.

Abstract: The invention provides a method for producing a peptide which includes a step of reacting a peptide in which a C-terminal carboxy group is activated which is obtained by reacting an N-protected peptide represented by the formula (I): P-AA1-OH??(I) a tertiary amine represented by the formula (II): and an acid halide in a flow reactor, with a silylated amino acid or peptide obtained by reacting an amino acid or peptide represented by the formula (III): H-AA2-OH??(III) with a silylating agent, in a flow reactor, wherein, in the formulae (I) to (III), AA1, AA2, P, R1, R2 and R3 are as defined herein.

Abstract: A method for stereoselectively producing an optically active alcohol compound. The optically active alcohol compound of Formula (8) can be produced in high yield and high selectivity from the compound of Formula (3), and the production method that is useful industrially and the intermediates therefor can be provided. In formulae, R1 is a hydrogen atom, C1-6 alkyl, C1-6 alkyl optionally substituted with R3, or the like, R2 is cyano or —CH2N(R5)R4, and R3 is C3-8 cycloalkyl.

Abstract: A novel method for producing a stereoselective epoxyketone compound is provided. A method for producing an epoxyketone compound represented by the formula (1), as represented by the following scheme, whereby it is possible to obtain an epoxyketone derivative in good yield and at high selectivity and to provide an industrially useful production method and an intermediate thereof. wherein R1 is a hydrogen atom, a linear, branched or cyclic alkyl group, an aromatic group which may have a substituent, or a heterocyclic group which may have a substituent, and R2 is a protective group for an amino group. R is a hydrogen atom or a C1-10 alkyl group, and R's may be the same or different, provided that at least one R is a C1-10 alkyl group.

Abstract: A novel method for producing a stereoselective epoxyketone compound is provided. A method for producing an epoxyketone compound represented by the formula (1), as represented by the following scheme, whereby it is possible to obtain an epoxyketone derivative in good yield and at high selectivity and to provide an industrially useful production method and an intermediate thereof. wherein R1 is a hydrogen atom, a linear, branched or cyclic alkyl group, an aromatic group which may have a substituent, or a heterocyclic group which may have a substituent, and R2 is a protective group for an amino group. R is a hydrogen atom or a C1-10 alkyl group, and R's may be the same or different, provided that at least one R is a C1-10 alkyl group.

Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2 may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.

Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2 may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.

Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.

Abstract: Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R1 and R2 each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R1 and R2may be combined to form an alkylene group, thereby forming a ring; and R3 and R4 each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R3 and R4 may be combined to form an alkylene group, thereby forming a ring.