Xixiang Ying

Two new chromones, oleracone H () and oleracone I (), were isolated from L. and identified by UV, IR, UHPLC-ESI-QTOF/MS, 1D NMR, 2D NMR, and CD spectra. In 1,1-diphenyl-2-picryl-hydrazyl (DPPH)...

Two new carbon skeleton compounds, identified as 2-(1-(3-hydroxy-2,2,6-trimethyl-6-vinyltetrahydro-2-pyran-3-yl)-2-methylpropoxy)-6-(hydroxymethyl)tetrahydro-2-pyran-3,4,5-triol named Olerapyran A (), and (E)-3-(6-acetyl-2-methyl-5-((3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2-pyran-2-yl)oxy)cyclooctylidene)butan-2-one named Oleraoctyl (), were first isolated from L., then their structures were determined using spectroscopic methods,...

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Four alkaloids were isolated from L., including two new compounds, 2-(4-amino-6-hydroxy-1,6-dihydropyrimidin-5-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol, named Olerapyrimidine () and (2 R,3S,4S,5R,6S)-2-(hydroxymethyl)-6-((6-hydroxypyridin-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triol, named Olerapyridine (), and two known compounds including 1H-imidazole () and (5S, 6 ...

Two new alkaloids identified as 2-(((S,Z)-1-(1H-azirin-1-yl)-5-methylhex-1-en-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol and (S,Z)-1-(1H-azirin-1-yl)-5-methylhex-1-en-3-ol, named olerazirin A (), olerazirin B (), together with five known alkaloids, identified as cyclo (L-Val-L-Ala) (), cyclo-(glycyl-L-leucine) (), cyclo-(Gly-Phe) (), cyclo...

Background: Pulsatilla saxatilis, a new species of the genus Pulsatilla has been discovered. The morphological information of this species has been well described, but its chloroplast genome characteristics and comparison...

Eleven compounds were obtained from L., including two novel ketone alkaloids, (, ), 4-hydroxy-3-methoxybenzamide () (isolated for the first time), β-adenosine (), oleracrylimide A and B (, ), oleracein H,...

Two novel alkaloids were identified as (E)-N-(4-3,4-dihydroxy-6-(hydroxymethyl)-5-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-2,5-dihydroxyphenyl)-3-(4-hydroxyphenyl)acrylamide , named Oleracrylimide D, (E)-N-(4-3,4-dihydroxy-6-(hydroxymethyl)-5-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-2,5-dihydroxyphenyl)-3-(4-hydroxy-3-methoxyphenyl)acrylamide , named Oleracrylimide E, isolated from L. The structures were identified by spectroscopic methods, including 1D NMR, 2D...

A new isoindole alkaloid, 6-hydroxy-2-(4'''-hydroxy-3'''-methoxyphenethyl)-4-(4'-hydroxy-3'-methoxyphenyl)-7-methoxy-1-benzo[f]isoindole-1,3(2)-dione, named oleraisoindole B was isolated from L., its structure was elucidated using NMR and UHPLC-ESI-Q-TOF/MS spectroscopic methods, and presented anti-inflammatory activity at 5 μM.

A novel skeleton alkaloid was obtained from Portulaca oleracea L., which was identified as 10,11-dihydroxybenzo[5',6'] pentaleno[1',2':3,4]pyrrolo[2,1-b]oxazol-7(11bH)-one, named oleracone M, and its structure was determined using UHPLC-ESI-QTOF/MS, 1D NMR and 2D...