14470
Novel C - 11 - deoxy ( 5b ) and A - ring - saturated ( 6 ) tryptanthrin analogues were discovered that maintained activity against Mtb and showed improved solubility compared to tryptanthrin as well as evidence of oral bioavailability in rodents .
 Chemical: tryptanthrin; Chemical: tryptanthrin
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: tryptanthrin; Chemical: tryptanthrin