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Two new kaurane-type diterpenoids from Wedelia chinensis (Osbeck.) Merr
TLDR
Two new kaurane-type diterpenoids were isolated from the whole plant of Wedelia chinensis and their structures were elucidated on the basis of extensive spectroscopic analyses (UV, IR, MS and NMR) and comparison with literature data.
Indole alkaloids from Ervatamia chinensis.
Strynuxlines A and B, alkaloids with an unprecedented carbon skeleton from Strychnos nux-vomica.
The investigation of the seeds of Strychnos nux-vomica led to the isolation of two novel indole alkaloids, strynuxlines A (1) and B (2), with an unprecedented 6/5/9/6/7/6 hexacyclic ring system.
Bioactive Limonoid Constituents of Munronia henryi.
TLDR
Fourteen new limonoid, munronins A-N (1-14), and eight known limonoids (15-22) were isolated from the whole plants of Munronia henryi and showed significant anti-tobacco mosaic virus activity and in vitro cytotoxicity against the human cancer cell lines.
Unprecedented Quassinoids with Promising Biological Activity from Harrisonia perforata.
TLDR
Perforalactone A, a new 20S quassinoid with a unique cagelike 2,4-dioxaadamantane ring system and a migrated side chain, was isolated from the plant Harrisonia perforata together with two biosynthetically related new quassinoids and exhibited notable biological properties.
Aphanamixoid A, a potent defensive limonoid, with a new carbon skeleton from Aphanamixis polystachya.
TLDR
The significant antifeedant activity of 1 against the generalist plant-feeding insect Helicoverpa armigera suggested it may be a potent defensive component of A. polystachya.
Novel sesquiterpenoids isolated from Chimonanthus praecox and their antibacterial activities.
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