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Open AccessOcellatuspyrones A‒G, new antibacterial polypropionates from the Chinese mollusk Placobranchus ocellatus
Marine invertebrates serve as rich sources of secondary metabolites with intriguing chemical diversities and a wide spectrum of biological activities. Particularly, marine shell-less sacoglossan mollusks have ...
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Open AccessMarine alkaloids as the chemical marker for the prey–predator relationship of the sponge Xestospongia sp. and the nudibranch Jorunna funebris
The dietary relationship study between marine sponge Xestospongia sp. and its nudibranch predators Jorunna funebris based on the discovery of isoquinolinequinones has long been studied. In this study, chemical in...
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Open AccessNovel and Neuroprotective Tetranortriterpenoids from Chinese Mangrove Xylocarpus granatum Koenig
Eight new tetranortriterpenoids (1–8) were isolated from the twigs and leaves of the Chinese mangrove plant Xylocarpus granatum, together with four related known ones (9–12). The structures of new compounds were ...
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Lysophospholipids from the Guangxi Sponge Spirastrella purpurea
Four known (1–4) and two new (5 and 6) lysophospholipids were isolated from the sponge Spirastrella purpurea from Weizhou Island, Guangxi Autonomous Region, China. The structures of the new compounds (5 and 6) we...
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A new kalihinol diterpene from the Hainan sponge Acanthella sp.
A new kalihinol diterpene, 10-epi-kalihinol X (1), together with two known related diterpenes (2 and 3), and two sesquiterpenes (4 and 5) were isolated from the Hainan sponge Acanthella sp. The structure of the n...
