Total Synthesis of the Proposed Structure of Mycobactin J.

The total synthesis of the proposed structure of mycobactin J (MJ), a metabolite of Mycobacterium tuberculosis, is presented. The highlights of the synthesis include a careful control of the Z-stereochemistry of the unsaturated long chain fatty acid, a biomimetic construction of the oxazoline building block and the carriage of an unprotected phenol throughout the synthesis.