5805
Using a newly developed strategy whose key step is the regioselective propargylation of hydroxyxanthone substrates , 99 structurally diverse Garcinia natural - product - like xanthones based on gambogic acid were designed and synthesized and their in vitro antitumor activity was evaluated .
 Chemical: hydroxyxanthone; Chemical: xanthones; Chemical: gambogic acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: hydroxyxanthone; Chemical: xanthones; Chemical: gambogic acid