naphthoquinones has been researched along with phthalide* in 3 studies
3 other study(ies) available for naphthoquinones and phthalide
| Article | Year |
|---|---|
Isoindolinones, Phthalides, and a Naphthoquinone from the Fruiting Body of Daldinia concentrica.
A chemical investigation of the ascomycetes of Daldinia concentrica was performed using silica gel column chromatography, ODS column chromatography, and preparative HPLC. Two new isoindolinone compounds, daldinans B (1) and C (2), two new phthalide compounds, daldinolides A (3) and B (4), and a new naphthoquinone, daldiquinone (5), were isolated together with two known compounds (6 and 7). The structures of 1, 2, and 5 were established using NMR, MS, and IR methods, and the structures of 3 and 4 were determined by derivatization from known compounds (6 and 7). 5 exhibited antiangiogenesis activity against HUVECs (IC Topics: Ascomycota; Benzofurans; Cell Line; Chromatography, High Pressure Liquid; Human Umbilical Vein Endothelial Cells; Humans; Magnetic Resonance Spectroscopy; Naphthoquinones; Phthalimides | 2018 |
Asymmetric Synthesis of Dihydronaphthoquinones Containing Adjacent Stereocenters via a Sulfa-Michael Addition Triggered Ring-Expansion Approach.
A novel asymmetric synthetic approach for the construction of enantioenriched functionalized dihydroquinones incorporating adjacent quaternary and tertiary stereocenters has been reported, in which enantioenriched 3-allylic phthalides engaged in an unprecedented sulfa-Michael addition-triggered stereoselective ring-expansion reaction, and furnished the desired sulfur-incoporated dihydronaphthoquinones with high stereoselectivity. Topics: Allyl Compounds; Benzofurans; Molecular Structure; Naphthoquinones; Stereoisomerism | 2015 |
Biomimetic studies towards the cardinalins: synthesis of (+)-ventiloquinone L and an unusual dimerisation.
Studies towards the biomimetic synthesis of cardinalin 3 are described. Despite the successful enantioselective synthesis of the monomeric pyranonaphthoquinone ventiloquinone L, it subsequently failed to undergo a proposed biomimetic homodimerisation to cardinalin 3 using a range of oxidants. However, treatment of a related naphthopyran with cerium ammonium nitrate (CAN) facilitated a tandem biaryl bond formation-oxidative demethylation sequence furnishing a dimeric pyranonaphthoquinone that had exclusively dimerised at C6. The nature of this unusual sequence is discussed and the product subsequently converted to the C6 regioisomer of cardinalin 3. Topics: Benzofurans; Benzoquinones; Biological Products; Biomimetics; Dimerization; Naphthoquinones; Plant Roots; Pyrans; Rhamnaceae; Stereoisomerism | 2009 |