HIV-1 ribonuclease H inhibitory phenolic glycosides from Eugenia hyemalis.
Three new galloyl arbutins, hyemalosides A-C (1-3), along with nine known compounds were isolated from the evergreen tree Eugenia hyemalis. The structures of compounds 1-3 were determined by analysis of NMR and MS data. Compounds 1-3 inhibited HIV-1 RNase H in vitro with IC50 values of 1.46, >18, and 1.19 microM, respectively. However, in a XTT-based cell viability assay using the human T-cell line CEM-SS infected with HIV-1 RT, none of the compounds inhibited the cytopathic effect of HIV-1 infection at the highest dose tested (20 microg/mL).
Bokesch
Heidi R
HR
Molecular Targets Development Program, SAIC-Frederick, Inc., Frederick, Maryland 21702, USA.
Wamiru
Antony
A
Le Grice
Stuart F J
SF
Beutler
John A
JA
McKee
Tawnya C
TC
McMahon
James B
JB