摘要:
A compound of the formula ##STR1## wherein R.sub.1 is C.sub.3 -C.sub.6 branched alkyl group, e.g., an isopropyl group or a tert-butyl group, R.sub.2 is a C.sub.1 -C.sub.6 alkoxy group, e.g., a methoxy, an ethoxy or a propoxy group, and X is a CHOH group or a (CH.sub.2).sub.n --group where n=0, 1 or 2 and a process for making this compound are disclosed.This compound is useful in human and veterinary therapeutics.
摘要:
This invention relates to quercetin or fisetin derivatives substituted on the oxygen in the 3 position by groups such as lower alkyl, cycloalkyl, methanesulfonyl or paratoluenesulfonyl.The derivatives substituted by methanesulfonyl or paratoluenesulfonyl are obtained from a 3-O-glycoside whose phenol OH groups are blocked in the form of benzoate, and from which the OH in the 3 position is released by the action of concentrated HCl; this OH is esterified by mesityl chloride or paratoluenesulfonic acid chloride, and the benzoate groups are eliminated by soda treatment. The O derivatives substituted by alkyl or cycloakyl are prepared from a suitably substituted acetonitrile or metadiphenol; the resulting derivative reacts with 3,4-dibenzyloxybenzoic acid and the resulting flavone is debenzylated by hydrogenolysis.The derivatives, object of this invention, are useful in preventive or curative therapy of ocular and nervous complications from diabetes and are also useful as hypolipidemic or hypoglycemic agents.
摘要:
Compounds, exhibiting central nervous system activity, of the formula ##STR1## wherein R.sub.1 is phenyl which is unsubstituted or substituted by at least one member selected from the group consisting of halogen, CF.sub.3, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and COOH, orR.sub.1 is ##STR2## or R.sub.1 is a heterocycle selected from the group consisting of ##STR3## R.sub.2 R.sub.3 R.sub.4 and R.sub.5, which may be identical or different, are H or CH.sub.3 ;R.sub.6 and R.sub.7, which may be identical or different, are C.sub.1 -C.sub.6 alkyl, which may be straight-chained or branched, orR.sub.7 can be H when R.sub.6 is a branched-chain alkyl, orR.sub.6 and R.sub.7 can form, with the nitrogen to which they are bonded, a heterocycle selected from the group consisting of ##STR4## R.sub.8 R.sub.9 R.sub.10 and R.sub.11, which may be identical or different, are H, halogen, CF.sub.3, hydroxy or C.sub.1 -C.sub.4 alkoxy, or two contiguous members of R.sub.8 R.sub.9, R.sub.10 and R.sub.11 may together form a chain --O--(CH.sub.2).sub.n --O--, where n=1 or 2, or a chain --O--CH.sub.2 --O--CH.sub.2 --;and pharmaceutically acceptable addition salts thereof are disclosed, along with a method of producing the same, and pharmaceutical compositions comprising the same.
摘要:
The present invention concerns a new triterpenic saponin derived from caulophyllogenin, the process for extracting it from varieties of Chrysanthellum, and its therapeutic use.This saponin is characterized as being the ester of O-.beta.-D-glucosyl-3.beta.-caulophyllogenin and an oligosaccharide comprising two units of L-rhamnose and two units of D-xylose. It is extracted from vegetable matter and purified using pressurized liquid preparative chromatographic techniques.This saponin is useful in human and veterinary therapeutics in phlebology, rheumatology, and traumatology.
摘要:
3-Amino 3H-isobenzofuranones substituted on the nitrogen atom with benzodioxol-1,3, benzodioxane-1,4 or benzodioxane-1,3 rings are described which possess analgesic and anti-edematous properties.
摘要:
A method for reducing serum lipid levels in humans and animals is provided which comprises administering a hypolipidemically effective amount of p-chlorophenyl 2-(p-chlorophenoxy)-2-methylpropionate. A hypolipidemic composition is provided which comprises p-chlorophenyl 2-(p-chlorophenoxy)-2-methylpropionate, as principal active ingredient, in combination with a pharmaceutically acceptable carrier. Total serum lipids and serum cholesterol levels are significantly reduced.
摘要:
Acetals and ketals of benzopyran glycosides, prepared by condensing a benzopyran glycoside with a carbonyl compound using a chloroformate ester as condensing agent, show enhanced activity in treating capillary fragility and related pathologies, as well as effectiveness in modifying the evolution of diabetic cataracts.
摘要:
A plant extract rich in triterpenic constituents obtained from chrysanthellum and containing as principle component a triterpenic saponin derivative of echinocystic acid whose glycoside contains rhamnose, glucose and xylose may be prepared by extraction of chrysanthellum plants. The extract has been shown to have pharmacological activity, especially analgesic, anti-inflammatory, capillaroprotective and anti-ulcer activity.