We have recently reported profound antimycobacterial activity for 6-aryl-9-benzylpurines as in compound 1 (Fig. 1), 10., and whereas the 9-phenylethylpurine derivative 2 was only moderately active. In order to gain further insight into the structural requirements for active antimycobacterial purines, we needed easy access to 9-arylpurines such as compound 3. ... Structure of known and potential antimycobacterial purines 1–3 as well as ... Structure of known and potential ...