A fluorescent probe is capable of detecting breast cancer, lung cancer, and squamous cell carcinoma. The fluorescent probe is also capable of detecting a benign tumor of a mammary gland. The fluorescent probe includes a compound represented by the following general formula or a salt thereof:

##STR00001##

A fluorescent probe is capable of detecting breast cancer, lung cancer, and squamous cell carcinoma. The fluorescent probe is also capable of detecting a benign tumor of a mammary gland. The fluorescent probe includes a compound represented by the following general formula or a salt thereof:

##STR00001##

Disclosed are aminocoumarin compounds, pharmaceutical compositions containing aminocoumarin compounds, and methods of their use, e.g., in the treatment of a Gram-negative bacterial infection.

Disclosed are aminocoumarin compounds, pharmaceutical compositions containing aminocoumarin compounds, and methods of their use, e.g., in the treatment of a Gram-negative bacterial infection.

The disclosure provides processes for preparing the compound of formula (VIa-1) and pharmaceutically acceptable salts thereof. Intermediates useful in preparing the compound of formula (VIa-1) are also provided.

##STR00001##

The disclosure provides processes for preparing the compound of formula (VIa-1) and pharmaceutically acceptable salts thereof. Intermediates useful in preparing the compound of formula (VIa-1) are also provided.

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