| abstract |
PROBLEM TO BE SOLVED: To (5Z, 7E)-(1R, 2R, 3R) -2- (3-hydroxypropoxy) -9,10-secocholesta 5,7,10 (19) -trien-1,3,25-triol ( Provided is a method for suppressing oxidation or decomposition of ED-71). (5Z, 7E)-(1R, 2R, 3R) -2- (3-hydroxypropoxy) -9,10-secocholester-5,7,10 (19) -trien-1,3,25- Oxidation of ED-71, comprising the step of preparing a mixed solution containing triol (ED-71) and a water-soluble polymer or basic compound in a solvent, and the step of removing the solvent from the obtained mixed solution. It is a method of suppressing. [Selection diagram] Fig. 1 |