ABSTRACT
The seco-prezizaane-type sesquiterpenes (SPS), as a special class of sesquiterpenes with a highly oxidative five-ring cage structure and seven consecutive chiral centers, are isolated from the genus Illicium, which have a variety of biological activities, including neurotoxicity and neurotrophic effects, etc. This review summarizes the chemical constituents and pharmacological effects of SPS, and discusses the potential trend and scope of future research.
ABSTRACT
Three seco-prezizaane-type sesquiterpene lactones, one phenylpropanoid, and two lignans were isolated from the 95% ethanol extract of stems and branches of Illicium ternstroemioides with silica gel column chromatography, ODS column chromatography, and preparative HPLC. Based on the spectral data, they were identified as burmanicumolide D(1), veranisatin A(2), veranisatin B(3), dihydroconiferylalcohol(4), pinoresinol(5),(-)-matairesinol(6), respectively. Among them, compound 1 was a new seco-prezizaane-type sesquiterpene lactone, and 2-6 were obtained from this plant for the first time. None of these compounds display antiviral or cytotoxic activities.
Subject(s)
Antiviral Agents , Illicium , Lactones , Molecular Structure , Phytochemicals , SesquiterpenesABSTRACT
Objective: To study the chemical constituents from the twigs and leaves of Illicius majus. Methods: The compound was isolated by column chromatography over silica gel, Sephadex HL-20, and flash chromatography coupled with preparative HPLC. The structure was elucidated by spectroscopic analysis including HR-ESI-MS, 1D-NMR, and 2D-NMR. The cytotoxic activities were assessed by MTT. Results: A new seco-prezizaane-type sesquiterpenoid named majusatone (1) was isolated from the twigs and leaves of I. majus. Compound 1 exhibited the cytotoxic activity against HCT-8, Bel-7402, BGC-823, and A549 with IC50 values of 42.3, 48.5, 51.1, and 39.9 μmol/L, respectively. Conclusion: Compound 1 is a new special seco-prezizaane-type sesquiterpenoid, and shows no significant cytotoxic activities against HCT-8, Bel-7402, BGC-823, and A549.