Modification of sugar chains in glycoalkaloids and variation of anticancer activity

作者：Li Sheng yu; He Da jun; Zhang Xu; Ni Wei hua; Zhou Yi fa^*; Zhang Li ping

来源：Chemical Research in Chinese Universities, 2007, 23(3): 303-309.

DOI：10.1016/S1005-9040(07)60065-8

• solamargine
• solasonine
• anticancer
• sulfation
• acidic hydrolysis

To study the effect of the sugar chains in glycoalkaloids against cancer cells, 6-O-sulfated solamargine and acidcatalyzed hydrolytic products of a-solamargine and a-solasonine were prepared. The sulfation at 0-6 of solamargine was proceeded in five steps. The 6-OH group was first selectively protected with DMT-Cl, and then the secondary hydroxyl groups on the sugar ring were acetylated. After the protective group DMTr was removed, the free 6-OH group was sulfated. Finally, the acetyl groups were removed to give 6-O-sulfated solamargine in a good yield. The hydrolyses of solamargine and solasonine were performed in diluted hydrogen chlorede. Three and two hydrolyzed products were obtained from solamargine and solasonine, respectively. The antiproliferative activities against HCT-8 tumor cells of two glycoalkaloids and their derivaties were examined via a MTT assay. The results show that alpha-solamargine and a-solasonine exhibit strong cytotoxic activities with an IC(50) of 10.63 and 11.97 mu mol/L, respectively, wheras their derivaties seem to be less activities.

• 出版日期2007-5
• 单位东北师范大学