nonhuman 8 unclassified drug 8 3beta bromo 5alpha,22,23 trihydroxystigmastan 6 one 6 antiviral activity 6 article 6 brassinosteroid 6 controlled study 6 priority journal 6 Animals 4 Antiviral 4 Antiviral Agents 4 Brassinosteroid derivatives 4 Cercopithecus aethiops 4 Cholestanones 4 Herpes simplex 4 Herpes simplex virus 4 Herpes simplex virus 1 4 Herpesvirus 1, Human 4 Measles virus 4 aciclovir 4 animal cell 4 antivirus agent 4 foscarnet 4 ribavirin 4 structure activity relation 4 (22S,23S)-3β- Bromo-5α,22,23-trihydroxystigmastan-6-one 2 (22S,23S)-3β-bromo- 5α,22,23-trihydroxystigmastan-6-one 2 2 alpha 3 alpha 22,23 tetrahydroxy 5 alpha stigmastan 6 one 2 2 alpha 3 alpha 22,23 tetrahydroxy homo 7 oxastigmastan 6 one 2 2 alpha 3 alpha 5 alpha 22,23 pentahydroxystigmatan 6 one 2