The title compound was prepared according to the procedure of Example 6, Step D, from 2,2,2-trichloro-1-{10-[(2′-methoxy-1,1′-biphenyl-4-yl)carbonyl]-10,11-dihydro-5H-pyrrolo[2,1-c][1,4]benzodiazepin-3-yl}ethanone (0.20 g, 0.379 mmol), 2-phenoxy-pyridin-3-ylmethyl-ammonium chloride (0.192 g, 0.78 mmol), triethylamine (0.112 g, 0.8 mmol), dimethylsulfoxide (0.131 mL, 1.85 mmol), and acetonitrile (5 mL). The crude material was purified by hplc using the following conditions: solvent system, 65:35 acetonitrile:water (0.1% trifluoroacetic acid); Primesphere 10 C18, 250 by 50 mm column; flow rate 100 mL/min) to provide the title compound (0.062 g) as a white solid.
