3-Alkanoyl-5-hydroxymethyl tetronic acid homologues and resistomycin: New inhibitors of HIV-1 protease. I. Fermentation, isolation and biological activity.

Abstract

In the course of a screening program for HIV-1 protease inhibiting activity, six new homologues of 3-alkanoyl-5-hydroxymethyl tetronic acids (1 approximately 6) and the known natural product resistomycin (7) were isolated from cultures of the Actinomycete strain DSM 7357. The substituted tetronic acids belong to a recently described structural class of secondary metabolites. The HIV-1 activity of resistomycin (7) has not been reported before.