Trimethylsilyl iodide → (+/-)-cis-1-(Acetyloxy)-6methoxy-3,3,14-trimethyl-7-oxo-2,3,7,14-tetrahydro-1h-benzo[b]chromeno[6,5-g][1,8]naphthyridin-2-yl aminoacetate

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Reaction Steps

Add 0.14 μl of iodotrimethylsilane to a solution, at ambient temperature, of 0.1 mmol of the compound of Example 10 in 1 ml of chloroform. The reaction mixture is stirred for 5 min. at ambient temperature and then evaporated to dryness under reduced pressure. Chromatography on silica gel (dichloromethane/methanol:85/15) allows the expected product to be isolated.

Provenance & Evidence