Anti-HIV-1 protease activity of lanostane triterpenes from the vietnamese mushroom Ganoderma colossum.
Four new lanostane triterpenes, colossolactone V (1), colossolactone VI (2), colossolactone VII (3), and colossolactone VIII (4), were isolated from the fruiting bodies of the Vietnamese mushroom Ganoderma colossum, together with the known compound colossolactone E (5). The structures of 1- 4 were assigned on the basis of spectroscopic evidence, and their absolute configurations were determined by CD spectroscopy and the Mosher ester method. Compounds 1- 5, as well as two previously isolated compounds [schisanlactone A (6) and colossolactone G (7)] from the same mushroom, were evaluated for inhibition of HIV-1 protease, with IC 50 values for the most potent compounds ranging from 5 to 13 microg/mL.
Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama 930-0194, Japan.
Riham Salah
RS
El Dine
Ali M
AM
El Halawany
Chao-Mei
CM
Ma
Masao
M
Hattori
D032902:Ganoderma / Q000737:chemistry*; D016333:HIV Protease / Q000187:drug effects; D017320:HIV Protease Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans; D020128:Inhibitory Concentration 50; D007810:Lanosterol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D014744:Vietnam
D017320:HIV Protease Inhibitors; D014315:Triterpenes; C497083:lanostanoid; D007810:Lanosterol; D016333:HIV Protease; C514803:p16 protease, Human immunodeficiency virus 1