Patent ID: 8013190

Claim:
A HIV protease inhibitor composition comprising a compound of formula: A—Z—(CH 2 CH 2 O) 2 —A wherein A is an anionic metallacarborane cluster; [(C 2 B 9 H 11 ) 2 -3-M(III)] (−) wherein M is Fe or Co; wherein Z is —(OCH 2 CH 2 ) 2 —N + H(R 1 )—, —(OCH 2 CH 2 ) 2 —N + (CH 2 CH 3 ) 2 —, —(OCH 2 CH 2 ) 2 —N(p-toluenesulfonyl)—, —(OCH 2 CH 2 ) 2 —X—, —N + H 2 — or —S—; wherein R 1 represents hydrogen, C 4 alkyl, tert-butyl, 2-hydroxyethyl, benzyl, A, or —(CH 2 CH 2 O) 2 —A, wherein X represents —O—, —CH(C 6 H 5 )—CH(C 6 H 5 )—, —OCH 2 C(CH 2 OCH 2 C 6 H 5 ) 2 CH 2 O—,