title: Anti-HIV diterpenes from Coleus forskohlii.
abstract: Various extracts of the aerial parts of Coleus forskohlii (Labiatae) were prepared and evaluated at their non cytotoxic concentration against HIV-1 NL4-3. Chloroform, ethyl acetate and n-butanol extracts showed 45.6, 66.5 and 37.7% inhibition of HIV, respectively in CEM-GFP cells infected with HIV-1(NL4-3) at 5 microg/mL. Four diterpenes, 1-deoxyforskolin, 1,9-dideoxyforskolin, forskolin and isoforskolin were isolated from the chloroform extract and tested against the virus. Six semi-synthetic derivatives of forskolin have been prepared to study SAR. 1-Deoxyforskolin and forskolin were found to be active against HIV(NL4-3). This is first report of anti HIV activity of this plant and its isolated constituents.
authors.affiliation: Department of Natural Products, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Punjab - 160062, India.
authors.forename: Hardik S
authors.initials: HS
authors.lastname: Bodiwala
authors.forename: Sudeep
authors.initials: S
authors.lastname: Sabde
authors.forename: Debashis
authors.initials: D
authors.lastname: Mitra
authors.forename: Kamlesh Kumar
authors.initials: KK
authors.lastname: Bhutani
authors.forename: Inder Pal
authors.initials: IP
authors.lastname: Singh
mesh_terms: D019380:Anti-HIV Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D015496:CD4-Positive T-Lymphocytes / Q000821:virology; D002460:Cell Line; D031330:Coleus / Q000737:chemistry*; D005576:Colforsin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D004797:Enzyme-Linked Immunosorbent Assay; D016655:HIV Core Protein p24 / Q000032:analysis; D015658:HIV Infections / Q000188:drug therapy; D015497:HIV-1 / Q000187:drug effects* / Q000254:growth & development; D006801:Humans; D013058:Mass Spectrometry; D019906:Nuclear Magnetic Resonance, Biomolecular; D035261:Plant Components, Aerial / Q000737:chemistry
chemical_list: D019380:Anti-HIV Agents; D016655:HIV Core Protein p24; D005576:Colforsin