A compound of the formula: in which R
1
is optionally substituted phenyl, optionally substituted naphthyl, optionally substituted bicyclic heterocyclic group, optionally substituted lower alkenyl or optionally substituted lower alkynyl, and R
2
is carboxy or protected carboxy, or a salt thereof, useful for treating and/or preventing MMP- or TNF-&agr; mediated diseases.
1
一种化合物的公式:其中R1为可选取的取代苯基、可选取的取代
萘基、可选取的取代双环杂环基、可选取的取代较低烯基或可选取的取代较低炔基,R2为羧基或保护羧基,或其盐,用于治疗和/或预防MMP或TNF-α介导的疾病。