摘要:
A composition for use in the treatment of heart failure of mammals which comprises, as its active ingredient, an N.sup.6 -substututed-adenosine-3',5'-cyclic phosphate represented by the following general formula (I) or a physiologically acceptable salt thereof: ##STR1## wherein R represents alkyl or aralkyl group and a pharmaceutically acceptable carrier, as well as a method for treating heart failure of mammals which comprises administering said composition.
摘要:
The present invention relates to a N.sup.6,N.sup.6 -disubstituted-cyclic adenosine-3',5'-monophosphate represented by the formula ##STR1## wherein R represents a linear alkyl group having 3 or more carbon atoms or a branched alkyl group having 4 or more carbon atoms, an aralkyl group or an alkenyl group; A.sup..sym. represents a hydrogen ion, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or an organoammonium ion, or a salt thereof, and a cardiac composition comprising it as an effective component, and further includes a process for preparing a compound represented by the formula ##STR2## wherein R.sub.1 represents an alkyl group, an aralkyl group or an alkenyl group and A.sup..sym. has the same meanings as defined above, or a salt thereof, characterized in that a 2'-O-protected-cyclic adenosine-3',5'-monophosphate represented by the formula ##STR3## wherein Y represents a protecting group and A.sup..sym. has the same meanings as defined above, or a salt thereof is reacted with an organic halide represented by the formulaR.sub.1 X (III) wherein X represents a halogen atom and R.sub.1 has the same meanings as defined above, and the protecting group is then removed.
摘要:
A method for the preparation of an N.sup.6 -substituted 3',5'-cyclic adenosine monophosphate or a salt thereof represented by the general formula ##STR1## wherein R.sub.1 represents a straight chain or branched chain alkyl group of 1 to 13 carbon atoms or an aromatic group and B.sym. represents a hydrogen ion or an alkali metal ion, which comprises allowing a 3',5'-cyclic adenosine monophosphate or a salt thereof represented by the general formula ##STR2## wherein A.sym. represents a hydrogen ion, alkali metal ion, organic ammonium ion, or ammonium ion, to react with an aldehyde represented by the general formulaR.sub.1 CHO (III)wherein R.sub.1 is as defined above, under the conditions such that pH is 7.0 or below, the temperature is -10.degree. to 120.degree. C., and the molar ratio of the compound (II) to the compound (III) is 1:1-40, and reducing the resulting compound with a metal hydride or nascent hydrogen.
摘要:
A process for producing ellagic acid comprising reacting a tannin having gallic acid residues attached as constituents with an oxidizing agent at pH 7 or higher.
摘要:
A health diet for preventing life-habit diseases (adult diseases) is provided.The health diet is prepared by directly encapsulating or tableting an organic solvent extract of soy sauce cakes or an aqueous alkali extract of a soy sauce oil, or blending the extracts with a diet.
摘要:
A method for preparing an N.sup.6,8-disubstituted 3',5'-cyclic adenosine monophosphate or a salt thereof represented by the general formula ##STR1## wherein X denotes a halogen atom or ##STR2## N.sub.3, OH or OR, R being an alkyl or aralkyl group; A.sup..sym. denotes a hydrogen ion, alkali metal ion, ammonium ion or organic ammonium ion; and R.sub.1 denotes an alkyl or aromatic group, which method comprises reacting an 8-substituted 3',5'-cyclic adenosine monophosphate or a salt thereof represented by the general formula (II) ##STR3## wherein X and A.sup.61 are as defined above, with an aldehyde represented by the general formulaR.sub.1 --CHO (III)wherein R.sub.1 is as defined above, to form an imine compound represented by the general formula ##STR4## wherein X, R.sub.1 and A.sup..sym. are as defined above, as an intermediate, and then reducing the imine compound.
摘要:
Triesters of adenosine cyclic 3',5'-phosphoric acid having cardiotonic, diuretic and anti-tumor activities represented by the following formula ##STR1## wherein R represents a linear or branched alkyl group having 5 to 15 carbon atoms, and the acid addition salts thereof; and a process for production thereof.
摘要:
3' ,5'-Cyclic-adenylic acid or 3' ,5'-cyclic-deoxadenylic acid can be obtained in a high purity and a high yield by adding a water-soluble organic solvent such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, tert-butyl alcohol, acetone, N,N'-dimethylformamide, dioxane, tetrahydrafuran, ethyleneglycolmonomethylether and the like singly or in combination to an aqueous solution containing as impurities one or more kinds of nucleotides other than 3' ,5'-cyclicadenylic acid and 3' ,5'-cyclic-deoxyadenylic acid, nucleosides, nucleobases, colored substances, proteins and the like in addition to 3' ,5'-cyclic-adenylic acid or 3', 5'-cyclic-deoxyadenylic acid.The said 3' ,5'-cyclic-adenylic acid or 3' ,5'-cyclic-deoxyadenylic acid are useful and valuable as a biochemical reagent.
摘要:
An N.sup.6,O.sup.2' -diacyladenosine-3',5'-cyclic phosphoric ester alkali metal salt can be obtained with ease and in a high yield by reacting an adenosine-3',5'-cyclic phosphoric ester alkali metal salt with a carboxylic anhydride having 4 or less carbon atoms at a temperature of 70.degree. C. or above.
摘要:
According to this invention are provided a method for determining an exo-type saccharide hydrolase activity which comprises adding to a sample a .beta.-maltoside derivative represented by the general formula ##STR1## wherein R is a chromophoric organic group, as a substrate, conducting reaction in the presence of a coupled enzyme, and optically determining the substance liberated, and a method for differentially determining glucoamylase and .alpha.-glucosidase activities which comprises adding, to a sample, the above .beta.-maltoside derivative as the first substrate and a coupled enzyme, and an .alpha.-glucoside derivative represented by the general formula ##STR2## wherein R' is a chromophoric organic group, as the second substrate, subjecting the mixtures to separate enzymatic reactions, and then optically quantitatively determine the substances liberated.