NOVEL PRODRUGS OF 5-(2,4-DIHYDROXY-5-ISOPROPYLPHENYL)-N-ETHYL-4-(5-METHYL1-1,2,4-OXADIAZOL-3-YL)ISOXAZOLE-3-CARBOXAMIDE

摘要

The present invention relates to the novel compound of Formula I. The compound of Formula I are used as a prodrug of the parent compound, Formula II, and have valuable pharmacological properties. The compound of Formula I have improved solubility by 1,000~20,000 times or more, and increased bioavailability compared to those of the compound of Formula II. Furthermore, they can be absorbed into the body with increased concentration by improved value of AUC0-120min and Cmax, more by 3~5 times and 10~20 times respectively compared to the compound of Formula II. Thus, those improved pharmacokinetic properties can be used very effectively to treat various diseases by inhibition of HSP90 activity, especially for ovarian and gastric cancer.