N-(2-formyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide → 7-N-acetyldemethyllavendamycin methyl ester

Participants

Reaction Conditions

Reaction Steps

7-N-Acetyllavendamycin N-N-Dimethylaminoethyl Ester (Compound 19. Table l): 7-Acetamido-2-formylquinoline-5,8-dione (23) (prepared as described in Example 23) (317 mg, 0.13 mmol) was dissolved in 16 ml of dry anisole and heated to 80° C. b-methyltryptophan N,N-dimethylaminoethyl ester (41) (prepared as described in Example 41) (37.5 mg, 0.13 mmol) was added with stirring, and the stirred mixture was heated at 100° C. for 5.5 hr. The reaction mixture was allowed to cool to room temperature and the solid was filtered. The filtrate was distilled under vacuum to dryness. Ethyl acetate (3 ml) was added, and the mixture was stirred. Upon filtration 24.5 mg (a yield of 36%) of an orange solid was obtained.

Provenance & Evidence