Abstract:
PURPOSE: Benzopyran derivatives substituted by secondary amine containing imidazole and a method for preparing the same are provided. The compounds are useful for treatment of cancer, diabetic retinopathy and external brain wound. CONSTITUTION: Benzopyran derivatives substituted by secondary amine containing imidazole represented by the formula(1), partial stereo isomers thereof and pharmaceutically acceptable salts thereof are provided, wherein R1 is H, CN, NO2 or NH2; R2 is CH3, CHORaRa or CHOOZ; Ra is C1-C4 linear or branched chain alkyl; Z is C2-C6 linear or branched chain alkyl; R3 and R4 are independently H, Cl, Br, F, C1-C3 linear or branched chain alkyl, ORb, CF3, OCF3, NO2 or CO2Rb; Rb is H or C1-C3 alkyl; and * is chiral carbon. A method for preparing the compound of the formula(I) comprises reacting epoxide compounds of the formula(II) with imidazole containing secondary amine compounds of the formula(III) in the presence of metal salt and a solvent, wherein the metal salt is selected from Mg(ClO4)2, COCl2, LiClO4, NaClO4, CaCl2, ZnCl2, LiBF4 and Zn(Tf)2; and the solvent is selected from acetonitrile, tetrahydrofuran and dimethylformamide.
Abstract:
PURPOSE: Provided are novel substituted imidazole derivatives, represented by the formula(1) and their pharmaceutically acceptable salts, a pharmaceutical composition containing them and their preparation method. The compounds are used in inhibiting the high blood pressure by inhibiting the action of Angiotensin II. CONSTITUTION: The imidazole derivatives are represented by the formula(1), wherein A and B are independently -CH2 or -CO- but not -CO- simultaneously; Z is halogen atom or trifluorophenyl, C1-C14 alkenyl group; R is X substituted phenyl or thiophenyl, furanyl and imidazoyl(where x is -(CH2)n-X' and n is an integer of 0-4), and X' is hydrogen, -N-(C1-C4 alkyl)2, C1-C4 alkyl N substituted or unsubstituted piperazine, 3-or 2-oxopiperazine, morpholine, piperidine, thiomorpholine or imidazole. The typical method of synthesis comprises the steps of: manufacturing 5-(4-((thiomorpholine-4-yl)methyl)-2-butyl-4-chloro-1-((2'-(1H- tetrazole-5-yl)bipheyl-4-yl)methyl)imidazole by dissolving 4-chlorobenzoic acid into benzene and adding thionylchloride, refluxing, concentrating and dissolving again in methylene chloride; adding this product to the methylene chloride solution of 2-butyl-4-chloro-5-(hydroxymethyl)-1-((2'-((1-ethoxyethyl)-1H-tetrazole-5-yl)biphenyl-4 -yl)methyl)imidazole and triethylamine; dissolving this compound in tetrahydrofuran(THF) and adding thiomorpholine and refluxing with heating for 20 hours and extracting with ethylacetate; and dissolving this compound in THF, adding 1N HCl, stirring at room temperature for 17 hours, neutralizing with 1N NaOH and extracting with ethyl acetate.
Abstract:
The cpd. of formula (I-a) is prepd. by (a) reacting ketone derivatives of formula (II) with trifluorosulfonic acid anhydride and ter-amine, or making the ketone derivatives (II) to enolate with a base and then reacting N-phenyl trifluoromethane sulfonimide to convert to the vinyl triflate derivs. of formula (III); and (b) reacting the derivs. (III) with pyridyl trialkyline derivs. of formula (IV) in the presence of palladium catalyst and chloride. In the formulas, R1 is -CN, -NO2, -OCX1X2X3, -NH2, -NHSO2Ra etc; X1, X2, and X3 are F, Cl or H; R3 is H or C1-6 alkyl or phenyl; R4 is C1-4 alkyl.
Abstract:
Novel benzopyran derivatives of formula (I) are prepared by O- nitration at C-3 hydroxy group of cromakalim of formula (II) in the anhydride acetic acid or C.H2SO4. In the formula (I), R1 R2=H, NO2, nitryl; R3= 2-oxo-1-pyrrolidinyl. Compound (I) are useful as antihypertensive and vasodilating agents.
Abstract:
Indane derivs. of formula (I) are new. In (I), R1= nitro, nitrile, halogen, amino, CF3, -(C=NH)-OMe, -NHCOCS3, -NHCSCX3, - COR4, -OCX3 OR -CSR4; X=H or halogen; R4=H, amino, lower alkyl or alkoxy, or opt. substd. phenyl; R2=-NO5R6, a gp. of formula (II), a gp. of formula (III), a gp. of formula (IV), etc.; R5 and R6 each=H, lower alkyl, cyclopropyl, cyclopropyl methyl or benzyl; n = 1 or 2; Y=CH2, O, S or -NR4; R3=H, OH, nitrooxy, formyloxy, alkanoyloxy, haloalkanoyloxy, alkoxycarbonyl, aroyloxy or carbamoyloxy. The cpds. (2) may be used in the treatment of hypertension.