The present invention relates to the novel compound 2-O-(9z,12z-octadecadienoyl)-3-O--D-galactopyranosyl-(1-6)-O--D-galactopyranosylglycerol (Generic name: shinbarometin) having the chemical structure represented by the following formula: ;or its acetate having an excellent effect on arthritis, osteoporosis and ruptured disc, and to a pharmaceutical composition containing said compound as an effective component, in combination with a pharmaceutically acceptable auxiliary, diluent, isotonic agent, preservative, lubricant and solubilizing aid, which is formulated in the form of a pharmaceutically acceptable preparation and has a potent effect for osteoporosis, arthritis and ruptured disc.
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