10624
This review gives a broad overview of synthetic approaches to canthines over a 30 - year period from 1982 to 2012 and summarizes recent reports on the synthesis of less well known ring - truncated congeners .
 Chemical: canthines
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: canthines