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The selective functionalization of a vancomycin aglycon derivative through direct conversion of the E - ring aryl chloride to a reactive boronic acid , and its use in the synthesis of a systematic series of vancomycin E - ring analogues are described .
 Chemical: vancomycin; Chemical: aryl chloride; Chemical: boronic acid; Chemical: vancomycin
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: vancomycin; Chemical: aryl chloride; Chemical: boronic acid; Chemical: vancomycin