6'-(1-Adamanta necarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-glucopyranose sulfate salts
AssigneeAmerican Cyanamid Company
InventorsVijay G. Nair, Seymour Bernstein
Life of this patent
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Abstract
6'-(1-Adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluco pyranose sulfate salts, useful as complement inhibitors, and the process for making such compounds.
Claims13
A compound selected from those of the formula:
- ##STR5## wherein A is a pharmaceutically acceptable cation salt, wherein the salt forming moiety is selected from the group consisting of alkali metal, alkaline earth metal, ammonia and substituted ammonia selected from the group consisting of trialkylamine (C.sub.1 -C.sub.6), piperidine, pyrazine, alkanolamine (C.sub.2 -C.sub.6) and cycloalkylamine (C.sub.3 -C.sub.6).
The compound according to claim 1, 6'-(1-adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluc opyranose, heptakis (H-sulfate), heptasalt with trimethylamine.
The compound according to claim 1, 6'-(1-adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluc opyranose, heptakis (H-sulfate), heptasodium salt.
A method of inhibiting the complement system in a body fluid which comprises subjecting said body fluid to the action of an effective complement inhibiting amount of a compound selected from those of the formula:
- ##STR6## wherein A is a pharmaceutically acceptable cation salt, wherein the salt forming moiety is selected from the group consisting of alkali metal, alkaline earth metal, ammonia and substituted ammonia selected from the group consisting of trialkylamine (C.sub.1 -C.sub.6), piperidine, pyrazine, alkanolamine (C.sub.2 -C.sub.6) and cycloalkylamine (C.sub.3 -C.sub.6).
A method of inhibiting the complement system in a warm-blooded animal which comprises administering to said warm-blooded animal an effective complement inhibiting amount of a compound selected from those of the formula:
- ##STR7## wherein A is a pharmaceutically acceptable cation salt, wherein the salt forming moiety is selected from the group consisting of alkali metal, alkaline earth metal, ammonia and substituted ammonia selected from the group consisting of trialkylamine (C.sub.1 -C.sub.6), piperidine, pyrazine, alkanolamine (C.sub.2 -C.sub.6) and cycloalkylamine (C.sub.3 -C.sub.6).
A process for the preparation of a compound of the formula:
- ##STR8## wherein A is a pharmaceutically acceptable cation salt, wherein the salt forming moiety is selected from the group consisting of alkali metal, alkaline earth metal, ammonia and substituted ammonia selected from the group consisting of trialkylamine (C.sub.1 -C.sub.6), piperidine, pyrazine, alkanolamine (C.sub.2 -C.sub.6) and cycloalkylamine (C.sub.3 -C.sub.6), which comprises suspending 6-O-.alpha.-D-galactopyranosyl-.alpha.-D-glucopyranose in pyridine, adding calcium sulfate, heating at 75.degree.-100.degree. C. for 15-60 minutes, adding trityl chloride, heating and stirring for 2 hours, cooling, adding acetic anhydride, standing overnight, collecting solid 6-O-(6-O-trityl-.alpha.-D-galactopyranosyl)-.alpha.-D-glucopyranose, heptaacetate, heating with glacial acetic acid at 40.degree.-70.degree. C. for 4 hours, cooling and extracting with dichloromethane, evaporating extracts to a glass and purifying giving 6-O-.alpha.-D-galactopyranosyl-.alpha.-D-glucopyranose, heptaacetate, treating with 1-adamantoylchloride in pyridine with stirring for 20 hours, pouring into ice, giving 6'-(1-adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluc opyranose, heptaacetate, dissolving in methanol:water:triethylamine (6:2:3), stirring for 24 hours and evaporating, giving 6'-(1-adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluc opyranose, adding to a mixture of trimethylamine-sulfur trioxide in dimethylformamide and stirring for 24 hours, giving 6'-(1-adamantanecarboxylate)-6-O-.alpha.-D-galactopyranosyl-.alpha.-D-gluc opyranose, heptakis (H-sulfate), heptasalt with trimethylamine and treating with an alkali metal or alkaline earth metal cation-containing compound or ammonia or a substituted ammonia other than trimethylamine selected from the group consisting of trialkylamine (C.sub.1 -C.sub.6), piperidine, pyrazine, alkanolamine (C.sub.2 -C.sub.6) and cycloalkylamine (C.sub.3 -C.sub.6).
Dependencies are inferred from the claim text.