production method | Method 1: isolated from the stomach of a spiny horn shark and a sea-green horn shark. Method 2: Synthesis of 3-hydroxy -5-bile acid (3 beta-hydroxy-5-hydroxy acid), Chenodeoxycholic acid (Chenodeoxycholic acid), fucosterol (fucosterol 1), Dehydroepiandrosterone (Dehydroepiandrosterone) or vinyl alcohol ketone Acetate (pregnen alone Acetate) as a raw material to prepare. For example, the compound (I) can be obtained by a 12-step reaction using 3 β-hydroxy-5-cholic acid as a starting material, and the product is obtained by the following reaction. Hydrochloric acid acidification of Squalamine trihydrochloride. |