Sb. Singh et al., EQUISETIN AND A NOVEL OPPOSITE STEREOCHEMICAL HOMOLOG PHOMASETIN, 2 FUNGAL METABOLITES AS INHIBITORS OF HIV-1 INTEGRASE, Tetrahedron letters, 39(16), 1998, pp. 2243-2246
Integration is an essential step in HN replication and is catalyzed by
an enzyme called integrase. We have isolated equisetin (la), and a no
vel opposite stereochemical homolog, phomasetin (2a), from Fusarium he
terosporum and a Phoma sp. respectively. They inhibit the invitro reco
mbinant integrase enzyme with IC50 values of 7-20 mu M. Unlike known i
nhibitors, these compounds also inhibit the integration reactions cata
lyzed by preintegration complexes isolated from HIV-I infected cells.
(C) 1998 Elsevier Science Ltd. All rights reserved.