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Synthesis of the conjugates was achieved via selective nucleophilic monofunctionalization of 5 , 10 , 15 , 20 - tetrahydroxyphenylporphyrins with propargyl bromide followed by Cu ( I ) mediated cycloaddition with bile acid azides in good yields .
 Chemical: 5 , 10 , 15 , 20 - tetrahydroxyphenylporphyrins; Chemical: propargyl bromide; Chemical: Cu ( I ); Chemical: bile acid azides
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 5 , 10 , 15 , 20 - tetrahydroxyphenylporphyrins; Chemical: propargyl bromide; Chemical: Cu ( I ); Chemical: bile acid azides