Water → HCID 68008756, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (2R,6S,13aS,14aR,16aS,Z)-ethyl 6-(5-methylisoxazole-3-carboxamido)-5,16-dioxo-2-(phenanthridin-6-yloxy)-1,2,3,5,6,7,8,9,10,11,13a,14,14a,15,16,16a-hexadecahydrocyclopropa[e]pyrrolo [1,2-a][1,4]diazacyclopentadecine-14a-carboxylate (Example 18c, 3.4 g, 5.0 mmol) in tetrahydrofuran (16.7 ml), ethanol (8.4 mL), and water (8.4 mL) was added lithium hydroxide monohydrate (1.36 g, 32.5 mmol). The mixture was stirred at 50° C. for 2 h, the solvent was evaporated under reduced pressure, and the residue partitioned between water and ethyl acetate. The aqueous layer was separated, diluted with ethyl acetate, and washed with 1N HCl. The organic layer was dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to give (2R,6S,13aS,14aR,16aS,Z)-6-(5-methylisoxazole-3-carboxamido)-5,16-dioxo-2-(phenanthridin-6-yloxy)-1,2,3,5,6,7,8,9,10,11,13a,14,14a,15,16,16a-hexadecahydrocyclopropa[e]pyrrolo[1,2-a][1,4]diazacyclopentadecine-14a-carboxylic acid (3.05 g, 94% yield)as a white solid.

Provenance & Evidence