Patent ID: 8664200

Claim:
A compound of formula (II): or a pharmaceutically acceptable salt or boronic acid anhydride thereof, wherein: P is R D —C(O)—; R D is a substituted or unsubstituted mono- or bicyclic ring system selected from the group consisting of phenyl, pyridinyl, pyrimidinyl, pyrazinyl, naphthyl, benzimidazolyl, quinolinyl, isoquinolinyl, quinoxalinyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, tetrahydroquinoxalinyl, and dihydrobenzoxazinyl; each saturated ring carbon atom in R D is unsubstituted or is substituted with R d ; each unsaturated ring carbon atom in R D is unsubstituted or is substituted with R d ; each R d is -Q-R E ; Q is —O—, —NH— or —CH 2 —; R E is a substituted or unsubstituted aryl, heteroaryl, heterocyclyl or cycloaliphatic ring; and Z 1 and Z 2 are each independently hydroxy, alkoxy, aryloxy, or aralkoxy: or Z 1 and Z 2 together form a moiety derived from a boronic acid complexing agent.