摘要:
Novel β-lactam compounds represented by the following formula (I) or pharmaceutically acceptable salts thereof which are useful as serum cholesterol-lowering agents: (I) wherein A1, A3 and A4 represent each hydrogen, halogen C1-5 alkyl, C1-5 alkoxy, —COOR1, a group represented by the following general formula (b): (b) wherein R1 represents hydrogen or C1-5 alkyl, or a group represented by the following general formula (a): (a) wherein R2 represents —CH2OH, —CH2OC(O)—R1 or —CO2—R1; R3 represents —OH or —OC(O)—R1; R4 represents —(CH2)kR5(CH2)1- wherein K and 1 are each 0 or an integer of 1 or above provided k+1 is an integer of not more than 10; and R5 represents a single bond, —CH═CH—, —OCH2—, carbonyl or —CH(OH)—; provided that at least one of A1, A3 and A4 is a group represented by the above formula (a); A2 represents C1-5 alkyl, C1-5 alkoxy, C1-5 alkenyl, C1-5 hydroxyalkyl or C1-5 carbonylalkyl; and n, p, q and r are each an integer of 0, 1 or 2.
摘要:
A process for producing an azulene derivative useful as a Na+-glucose cotransporter inhibitor, which is high in yield, is simple in operation, is low in cost, is suited for environmental protection, and is advantageous industrially, the process being characterized by reducing and deprotecting at least one compound selected from penta-acyl compounds and tetra-acyl compounds or salts thereof to obtain a C-glycoside compound; and a useful intermediate for synthesis of such an azulene derivative, obtained in the course of the above process.
摘要:
This invention relates to a process for producing optically active alcohols using asymmetric reduction of aromatic ketones. This process gives optically active alcohols in high enantioselectivity at large scale production. Aromatic ketones represented by formula (I) [wherein, R1 are selected from hydrogen atom, halogen atom, lower alkyl group etc. R2 is —(CH2)n-R3 [wherein, n is 1 to 5 integer. R3 are selected from hydrogen atom, halogen atom, lower alkoxycarbonyl group etc. and formula (II) and (III). {wherein, R4 is selected from lower alkyl group (1 to 5 carbon atom) etc. R5 and R6 are the same or different and are selected from hydrogen atom, halogen atom, lower alkyl group etc.}]] are reduced by sodium borohydride, chlorotrimethylsilane and optically active 2-[bis(4-methoxyphenyl)hydroxymethyl]pyrrolidine represented by formula (IV) to give optically active alcohol represented by formula (V) stereoselectively. (wherein, R1 and R2 are as defined above.)
摘要:
A serum cholesterol lowing agent or a preventive or therapeutile agent for atherosclerosis, which each comprises a combination of a compound represented by the following general formula (I) or pharmaceutical acceptable salts thereof with a cholesterol biosynthesis inhibitor and/or a fibrate type cholesterol lowing agent. (I) (b) (a) [In the formula, A1, A2, A3 and A4 each is hydrogen, a group represented by the formula (b), or a group represented by the formula (a), provided that at least one of these is a group represented by the formula (a); A2 is C1-5 alkyl etc; and n. p, q and r each is an integer of 0, 1 or 2.
摘要:
This invention related to a series of new phosphonic acid derivatives having anti-hyperphosphatemia activity. (I)[wherein: A is selected from —(CH2)n—, —CO—, —(CH2)n—CO—(CH2)m—, —(CH2)n—CS—(CH2)m— or branched alkylene group. B ring and C ring are selected from benzene ring, naphthalene ring, azulene ring or, heterocycle or fused heterocycle. D is —(CH2)(n+1)—, —(CH2)-O—(CH2)m—, —(CH2)—S(O)o—(CH2)m—, —CF3 or —(CH2)n—NR10—(CH2)m— (wherein: D ring is connected with the carbon atom composing C ring.) E is selected from oxygen atom or sulfur atom. P is phosphine atom. R1˜R7 (wherein R1 and R2, R4 and R5 are joined together with neighbored carbon atom to form 5˜7 membered saturated or unsaturated hydrocarbon ring, or 5˜6 membered fused heterocycle. R1, R2 and R3 are not hydrogen atom if B ring is benzene ring.) may be the same or different and are substituents. R8 and R9 are may be the same or different and are substituents. R10 is alkyl group. n and m are 0-10. o is 0-2.
摘要:
This invention relates to a process for producing optically active alcohols using asymmetric reduction of aromatic ketones. This process gives optically active alcohols in high enantioselectivity in a large scale production.
摘要:
This invention related to a series of new phosphonic acid derivatives having anti-hyperphosphatemia activity. wherein: A is selected from —(CH2)n—, —CO—, —(CH2)n—CO—(CH2)m—, —(CH2)n—CS—(CH2)m— or a branched alkylene group, B ring and C ring are selected from a benzene ring, naphthalene ring, azulene ring or, heterocycle or fused heterocycle compound, D is —(CH2)(n+1)—, —(CH2)—O—(CH2)m—, —(CH2)—S(O)o—(CH2)m—, —CF3 or —(CH2)n—NR10—(CH2)m— wherein a D ring is connected with the carbon atom composing the C ring, E is selected from an oxygen atom or a sulfur atom, P is a phosphine atom, R1˜R7, wherein R1 and R2, R4 and R5 are joined together with neighbored carbon atom to form 5˜7 membered saturated or unsaturated hydrocarbon ring, or 5˜6 membered fused heterocycle, R1, R2 and R3 are not a hydrogen atom if the B ring is a benzene ring and may be the same or different and are substituents, R8 and R9 are may be the same or different and are substituents, R10 is an alkyl group, n and m are 0-10 and o is 0-2.
摘要:
A serum cholesterol lowing agent or a preventive or therapeutile agent for atherosclerosis, which each comprises a combination of a compound represented by the following general formula (I) or pharmaceutical acceptable salts thereof with a cholesterol biosynthesis inhibitor and/or a fibrate type cholesterol lowing agent. (I) (b) (a) [In the formula, A1, A2, A3 and A4 each is hydrogen, a group represented by the formula (b), or a group represented by the formula (a), provided that at least one of these is a group represented by the formula (a); A2 is C1-5 alkyl etc; and n. p, q and r each is an integer of 0, 1 or 2.
摘要:
The present invention provides an azulene derivative and a salt thereof, wherein an azulene ring is bonded to a benzene ring directly or via a lower alkylene which may be substituted with a halogen atom and the benzene ring is directly bonded to the glucose residue, and it is usable as a Na+-glucose cotransporter inhibitor, especially for a therapeutic and/or preventive agent for diabetes such as insulin-dependent diabetes (type 1 diabetes) and insulin-independent diabetes (type 2 diabetes), as well as diabetes-related diseases such as insulin-resistant diseases and obesity.
摘要:
The present invention provides C-glycoside derivatives and salts thereof, wherein B ring is bonded to A ring via —X— and A ring is directly bonded to the glucose residue, and it is usable as a Na+-glucose cotransporter inhibitor, especially for a therapeutic and/or preventive agent for diabetes such as insulin-dependent diabetes (type 1 diabetes) and insulin-independent diabetes (type 2 diabetes), as well as diabetes related diseases such as an insulin-resistant diseases and obesity.