Abstract:
A quinoline derivative represented by general formula (1), a medicinally acceptable salt thereof, and a remedy for cardiac diseases containing the same, wherein ring A represents a furan, dihydrofuran or dioxolane ring, R1 represents hydroxy, carboxy, alkoxycarbonyl, etc., R2s may be the same or different from each other and each represents hydrogen, alkyl, etc., R?3 and R4¿ may be the same or different from each other and each represents hydrogen, halogen, alkyl, amino, alkoxy, etc., R?5, R6, R7 and R8¿ may be the same or different from one another and each represents hydrogen or alkyl, m represents an integer of 0 to 3, and symbol ...... means that there may be a double bond formed by R?6 and R8¿. The compound (1) has a positively inotropic effect on myocardia and an antiarrhythmic effect and can dilate blood vessels without extremely increasing the heart rate. Therefore, a remedy for cardiac diseases containing the same as the active ingredient is remarkably useful for treating cardiac insufficiency, arrhythmia, and so forth.
Abstract:
Compounds of the general formula (I) or salts thereof; and drugs containing the compounds or the salts: (I) [wherein R1 is optionally substituted phenyl, pyridyl, or the like; R2 is lower alkoxy, lower alkylthio, lower alkylsulfinyl, lower alkylsulfonyl, or the like; R3 is hydrogen, lower alkoxy, or the like; and R4 is hydrogen, substituted alkyl, or the like]. The compounds exhibit an excellent interleukin 1ß production inhibiting activity and are useful as preventive and therapeutic drugs for immunologic diseases, inflammatory diseases, ischemic disease, and so on.
Abstract:
Pyridazine derivatives represented by general formula (1) or salts thereof, wherein R1 represents lower alkoxy, lower alkylthio or halogeno; R2 represents H, lower alkoxy, lower alkylthio or halogeno; R3 represents OH, CN, halogeno, lower cycloalkyl, lower alkyl or lower alkenyl optionally substituted by an optionally substituted aromatic group or optionally substituted carbamoyl; R4 represents COOH, lower alkoxycarbonyl, optionally substituted carbamoyl, optionally substituted amino or optionally substituted ureido; and the broken line means a single bond or a double bond between the carbon atoms at the 4- and 5-positions. Because of having an excellent effect of regulating interleukin-1β production, these compounds are useful as preventives/remedies for immunologic diseases, inflammatory diseases, ischemic diseases, etc.
Abstract:
PROBLEM TO BE SOLVED: To obtain a large amount of the subject compound useful as a therapeutic agent for heart diseases under mild conditions in a high yield by treating a specific phthalimide compound with a base. SOLUTION: (2-RS,3-SR)-2,3,5,8,8-Pentamethyl-2-(N-phthaliminomethyl)-2,3,7,8- tetrahydro-6H-furo[2,3-e]indol-7-one of formula I is treated with a base (e.g. methylamine) to give the objective (2-RS,3-SR)-2-aminomethyl-2,3,5,8,8- pentamethyl-2,3,7,8-tetrahydro-6H-furo[2,3-e]indole-7-one of formula II. When an organic amine is used as the base, preferably the compound of formula I is reacted with 1-5 equivalents of the amine at 50-120 deg.C for 1-10 hours. The compound of formula I is preferably obtained by reacting an iodine compound of formula III with a phthalimide alkali salt in an aprotic polar solvent.
Abstract:
PURPOSE:To provide a new pyrano[2,3-f]quinoline derivative having excel lent antiarrhythmic action, cardiac action, vasodilative action, etc., and useful as a cardiac disease therapeutic agent represented by cardiac failures. CONSTITUTION:The compound of formula 1 (R is lower alkyl; R is H, halogen, OH, lower alkylsulfonyloxy, lower alkanoyloxy, lower alkoxy, azido, amino; R is H, lower alkyl; R is H, lower alkyl, OH, lower alkylamino, pyrrolidinyl or piperazinyl which may have a substituent; when a double bond exists between the 3,4 positions, the substituent R does not exist), e.g. 3acetoxy-6-methyl-3,4,7,8- tetrahydro-2H-pyrano[2,3-f]quinoline. The compound of formula 1-1 among the compounds of formula 1 is obtained by reacting a quinoline compound with an allyl halide compound, thermally subjecting the obtained compound of formula 3 to a Claisen rearrangement, reacting the reaction product with an aliphatic acid anhydride, reacting the obtained compound of formula 5 with a peracid, and subsequently treating the produced epoxy compound of formula 6 with an alkali halide.
Abstract:
NEW MATERIAL:A sulfonamide compound shown by the formula (R1 is lower alkyl, lower alkoxy or halogen; R2 is H, lower alkyl, aryl or arylalkyl; R3 is aryl or arylalkyl; R4 and R4' may be the same or different and H, lower alkyl or lower alkoxy; m is 0-3; n is 1-8) and an acid addition salt thereof. EXAMPLE:1-Diphenylmethyl-4-(3-benzenesulfonylaminopropyl)piperazine. USE:Useful as a drug for cardiovascular system. PREPARATION:For example, a compound shown by formula II is reacted with a compound shown by formula III in a solvent such as methylene chloride or chloroform at -10-+100 deg.C, preferably in the presence of a base such as sodium hydroxide to give a compound shown by formula I wherein R2 is H. Further this compound is reacted with a compound shown by the formula R2'Y (R2' is R2 except H; Y is halogen, alkylsulfonyloxy, etc.) and converted to a compound shown by formula I wherein R2 is except H.