“…The crude product was purified by semi-preparative RP-HPLC gave the title compound as a fluffy white solid (6.6 mg, 16%). 1 6,169.5,158.6,158.5,137.2,135.0,133.9,129.3,128.7,128.51,128.45,128.4,127.2,126.7,56.1,55.0,49.2 (HSQC),48.8 (HSQC),42.0,41.5,40.4,40.2,36.2,34.6,30.6,…”