4-Methyl-2-Pentanol → 4-[(2-cyclopentyl-4,4-diethyl-6-methyl-5-oxo-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-10-yl)amino]-N-(2,2-dimethyl-3-pyrrolidin-1-yl-propyl)-3-methoxy-benzamide

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10-chloro-2-cyclopentyl-4,4-diethyl-6-methyl-2,6,9,11-tetrazabicyclo[5.4.0]undeca-7,9,11-trien-5-one (Intermediate 250; 111 mg, 0.33 mmol), p-toluenesulphonic acid monohydrate (155 mg, 0.81 mmol) and 4-amino-N-(2,2-dimethyl-3-pyrrolidin-1-yl-propyl)-3-methoxy-benzamide (Intermediate 206; 100 mg, 0.33 mmol) were added to 4-methyl-2-pentanol (7 mL). The reaction was heated at 120° C. over the weekend. The sample was transferred to an SCX cartridge (10 g) pre-wet with methanol, then washed with methanol and eluted with methanolic ammonia. Product containing fractions were combined and evaporated and the resultant material purified by base modified reverse phase preparative HPLC to yield the title compound as a white solid (55 mg, 27%).

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