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A series of compounds containing an alpha , beta - unsaturated carbonyl moiety , such as chalcones and coumarins were designed , synthesized and tested in a variety of assays to assess their potential as anti - Alzheimer ' s disease ( AD ) agents .
 Chemical: alpha , beta - unsaturated carbonyl; Chemical: chalcones; Chemical: coumarins
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: alpha , beta - unsaturated carbonyl; Chemical: chalcones; Chemical: coumarins