Diisopropylethylamine → (2S)-2-{[6-{2-[(2R)-3-cyclopentyl-2-({formyl[(phenylmethyl)oxy]amino}methyl)propanoyl]hydrazino}-5-fluoro-2-(methyloxy)-4-pyrimidinyl]amino}-N,N-dimethylbutanamide

Participants

Reaction Conditions

Reaction Steps

[(2R)-3-{2-[6-Chloro-5-fluoro-2-(methyloxy)-4-pyrimidinyl]hydrazino}-2-(cyclopentylmethyl)-3-oxopropyl][(phenylmethyl)oxy]formamide (0.133 g, 0.28 mmol), (2S)-2-amino-N,N-dimethylbutanamide, hydrochloride salt (Example 83) (0.075 g, 0.45 mmol) and diisopropylethylamine (0.1 mL, 0.62 mmol) were stirred in DMSO (2 mL) overnight at 65° C. Then additional diisopropylethylamine (0.2 mL) was added, and the reaction was stirred for 7 days at 80° C. Purified by RP-HPLC to provide (2S)-2-{[6-{2-[(2R)-3-cyclopentyl-2-({formyl[(phenylmethyl)oxy]amino}methyl)propanoyl]hydrazino}-5-fluoro-2-(methyloxy)-4-pyrimidinyl]amino}-N,N-dimethylbutanamide (0.036 g, 23%). LCMS: (M+H)+=574.3.

Provenance & Evidence