title: Clerodane diterpenoids from Ajuga bracteosa Wall.
abstract: The whole plant of Ajuga bracteosa afforded five compounds including one new clerodane diterpenoid designated as Bracteonin-A (1) 6alpha-acetoxy, 15 (R&S)-methoxy, 18-(4'-hydroxy, 3'-beta-methyl, 3'-alpha-acetoxy, butyryloxy) neoclerodane. The other compounds identified were 14,15-dihydroajugapitin, 14-hydro-15-hydroxy ajugapitin, beta-sitosterol, and stigmasterol. The structural elucidation was carried out by spectroscopic techniques.
authors.affiliation: Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur, HP, India.
authors.forename: Vegesana H K
authors.initials: VH
authors.lastname: Verma
authors.forename: Umar
authors.initials: U
authors.lastname: Mahmood
authors.forename: Bikram
authors.initials: B
authors.lastname: Singh
mesh_terms: D031328:Ajuga / Q000737:chemistry*; D002855:Chromatography, Thin Layer; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000493:pharmacokinetics / Q000494:pharmacology; D045785:Diterpenes, Clerodane; D007194:India; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013237:Stereoisomerism; D013265:Stigmasterol / Q000737:chemistry
chemical_list: D004224:Diterpenes; D045785:Diterpenes, Clerodane; D012855:Sitosterols; C469877:bracteonin-A; C025473:gamma-sitosterol; D013265:Stigmasterol