摘要:
The invention provides a process for producing an optically active butyric acid compound and a production intermediate therefore at high yield and high purity.The present invention provides a process for producing Compound (6), including reacting Compound (1) with optically active 2-trifluoromethanesulfonyloxybutyrolactone (2a) in the presence of a base or reacting optically active 2-hydroxybutyrolactone (2b) under Mitsunobu reaction conditions, to thereby form Compound (3); reacting Compound (3) with an alcohol and a halogenating agent, to thereby form Compound (4); dehalogenating Compound (4), to thereby form Compound (5); and de-esterifying Compound (5).
摘要:
A compound represented by the following general formula (I) or a salt thereof, or a solvate thereof: (wherein R1, R2, R3, R4 and R5 are the same or different, and represent hydrogen atom, a halogen atom, a lower alkyl group etc., R6, R7 and R8 are the same or different, and represent hydrogen atom, a halogen atom, a lower alkyl group etc., R9 and R10 are the same or different, and represent hydrogen atom, a lower alkyl group, a (lower cycloalkyl)(lower alkyl) group etc., and R11 represents hydrogen atom, a halogen atom, a lower alkoxy group, a (lower alkyl)thio(lower alkoxy) group, a (lower alkyl)sulfinyl(lower alkoxy) group, a (lower alkyl)sulfonyl(lower alkoxy) group etc.), which has potent inhibitory activity on CETP.
摘要:
The invention provides a process for producing an optically active butyric acid compound and a production intermediate therefor at high yield and high purity.The present invention provides a process for producing Compound (6), including reacting Compound (1) with optically active 2-trifluoromethanesulfonyloxybutyrolactone (2a) in the presence of a base or reacting optically active 2-hydroxybutyrolactone (2b) under Mitsunobu reaction conditions, to thereby form Compound (3); reacting Compound (3) with an alcohol and a halogenating agent, to thereby form Compound (4); dehalogenating Compound (4), to thereby form Compound (5); and de-esterifying Compound (5).
摘要:
A process for obtaining a compound (1) and an intermediate thereof in high yield and high optical yield is provided.A process for producing a compound (4), the process including reacting a compound (2) with a compound (3) in the presence of a base; and a process for producing a compound (1), the process including reacting a compound (2) with a compound (3) in the presence of a base to yield a compound (4) and then deesterifying the compound (4). wherein R represents an alkyl group having 1 to 6 carbon atoms or an aralkyl group having 7 to 8 carbon atoms.
摘要:
A process for obtaining a compound (1) and an intermediate thereof in high yield and high optical yield is provided.A process for producing a compound (4), the process including reacting a compound (2) with a compound (3) in the presence of a base; and a process for producing a compound (1), the process including reacting a compound (2) with a compound (3) in the presence of a base to yield a compound (4) and then deesterifying the compound (4). wherein R represents an alkyl group having 1 to 6 carbon atoms or an aralkyl group having 7 to 8 carbon atoms.
摘要:
A process for producing an optically active 2-hydroxybutyric ester represented by formula (1): by reacting an optically active 2,3-epoxypropionic ester represented by formula (2): with a methyl Grignard reagent CH3MgX in the presence of a copper catalyst in an amount of 0.05 to 0.5 mol with respect to 1 mol of the 2,3-epoxypropionic ester.
摘要:
To provide a process for producing an optically active 2-hydroxybutyric ester at high yield and high optical purity.The process for producing an optically active 2-hydroxybutyric ester (1), characterized in that the process includes reacting an optically active 2,3-epoxypropionic ester (2) with a methyl Grignard reagent CH3MgX (wherein X represents a halogen atom) in the presence of a copper catalyst in an amount of 0.05 to 0.5 mol with respect to 1 mol of (2) through the following scheme: (wherein R represents a C1 to C6 alkyl group or a C7 or C8 aralkyl group; X represents a halogen atom; and * represents S- or R-absolute configuration).
摘要:
The present invention provides a production intermediate for compound (A-1) and a method for producing the intermediate at high yield and high optical yield.The present invention provides a method for producing compound (3) characterized in that compound (1) is reacted with compound (2) in the presence of a base. (wherein R represents a C1 to C6 alkyl group or a C7 to C8 aralkyl group).
摘要:
A compound represented by the following general formula (I), wherein R1, R2, R3, R4 and R5 represent hydrogen atom, a halogen atom, a lower alkyl group and the like, R6 represents an alkyl group, a cycloalkyl group and the like, R7 and R8 represent hydrogen atom, a lower alkyl group, a (lower cycloalkyl)(lower alkyl) group and the like, R9 represents hydrogen atom, a halogen atom, a lower alkoxy group and the like, R10 and R11 represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halo(lower alkyl) group and the like, and A represents a heterocyclic ring constituted by 6 to 10 atoms, which has potent inhibitory activity on cholesterol ester transfer protein (CETP).
摘要:
A compound represented by the following general formula (I), wherein R1, R2, R3, R4 and R5 represent hydrogen atom, a halogen atom, a lower alkyl group and the like, R6 represents an alkyl group, a cycloalkyl group and the like, R7 and R8 represent hydrogen atom, a lower alkyl group, a (lower cycloalkyl)(lower alkyl) group and the like, R9 represents hydrogen atom, a halogen atom, a lower alkoxy group and the like, R10 and R11 represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halo(lower alkyl) group and the like, and A represents a heterocyclic ring constituted by 6 to 10 atoms, which has potent inhibitory activity on cholesterol ester transfer protein (CETP).