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Six compounds were isolated from alcoholic extracts of Meconopsis quintuplinervia Regel.. On the basis of spectroscopic methods, their structures were identified as 8,9 -dihydroxy-1,5,6,10b-tetrahydro-2H-pyrrolo [ 2,1-a ] isoquinolin-3-one (1), o-methylflavinantine (2), amurine (3), tricin (4), luteolin (5) and β-sitosterol (6). Among them, compounds 1 and 4 were isolated from the plant for the first time.
From the aerial parts of <i>Senecio dianthus</i>, four new eremophilenolides (<b>1</b>-<b>4</b>, resp.) and one new eremophilenolide alkaloid (<b>5</b>), of the relatively uncommon eremophilenoid-type sesquiterpenoid lactones, were isolated together with three known sesquiterpenoid lactones, 10<i>β</i>-hydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>6</b>), 8<i>β</i>,10<i>β</i>-dihydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>7</b>), and 10<i>α</i>-hydroxy-1-oxoeremophila-7(11),8(9)-dien-12,8-olide (<b>8</b>). On the basis of IR, MS, and NMR data, particularly 2D-NMR analyses, the structures of the new compounds were established as: 2<i>β</i>-(angeloyloxy)-10<i>β</i>-hydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>1</b>), 6<i>β</i>-(angeloyloxy)-10<i>β</i>-hydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>2</b>), 2<i>β</i>-(angeloyloxy)-8<i>β</i>,10<i>β</i>-dihydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>3</b>), 2<i>β</i>-(angeloyloxy)-8<i>α</i>-hydroxyeremophila-7(11),9(10)-dien-12,8<i>β</i>-olide (<b>4</b>), and 8<i>β</i>-amino-10<i>β</i>-hydroxyeremophil-7(11)-en-12,8<i>α</i>-olide (<b>5</b>). In addition, the relative configuration of <b>1</b> was corroborated by X-ray diffraction analysis.
Three new flavone C-glycosides, paraquinins A-C, were isolated from the aerial parts of Paraquilegia microphylla (Royle) Dromm. et Hutch, a Tibetan medicine distributed in the Qinghai-Tibet plateau. On the basis of 1D and 2D NMR evidence, their structures were elucidated as acacetin-6-C-β-D-glucopyranosyl-(1 → 2)-β-D-glucopyranoside (1), acacetin-6-C-α-L-rhamnopyranosyl-(1 → 2)-β-D-glucopyranosyl-(1 → 2)-β-D-glucopyranoside (2), and acacetin-6-C-α-L-rhamnopyranosyl-(1 → 2)-(6'''-O-E-feruloyl)-β-D-glucopyranosyl-(1 → 2)-β-D-glucopyranoside (3).