Palynological study of Veronica Sect. Veronica and Sect. Veronicastrum (Scrophulariaceae) and its taxonomic significance

External flavonoid aglycones from Veronica chamaedrys L. (Scrophulariaceae).

External flavone aglycones in the overground parts of Veronica chamaedrys L. (Scrophulariaceae) have been analysed by isocratic reversed-phase high performance liquid chromatography. Luteolin, apigenin, luteolin-3'-methyl ether and scuterallein-6,4'-dimethyl ether have been identified. The latter compound is a new flavonoid identified in Veronica genus.

the study of practical and theoretical foundation of credit risk and its coverage

پس از بررسی هر کدام از فاکتورهای نوع صنعت, نوع ضمانت نامه, نرخ بهره , نرخ تورم, ریسک اعتباری کشورها, کارمزد, ریکاوری, gdp, پوشش و وثیقه بر ریسک اعتباری صندوق ضمانت صادرات ایران مشخص گردید که همه فاکتورها به استثنای ریسک اعتباری کشورها و کارمزد بقیه فاکتورها رابطه معناداری با ریسک اعتباری دارند در ضمن نرخ بهره , نرخ تورم, ریکاوری, و نوع صنعت و ریسک کشورها اثر عکس روی ریسک اعتباری داردو پوشش, وثی...

Calendin, tyrosol and two benzoic acid derivatives from Veronica persica (Scrophulariaceae).

Veronica persica Poiret (Family: Scrophulariaceae), the `Common Field Speedwella or `Persian speedwella, is a neophytic weed originally from south-west Asia and widely distributed in the temperate regions (USDA-ARS GRIN database, 1999; Fischer, 1987; Holm et al., 1979). The plants were garden weeds and collected in #ower near Aberystwyth (Tyn-y-Graig, Wales), and a voucher specimen (N9623) of t...

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Iridoid glucosides from Veronica hederifolia.

A new iridoid glucoside, urphoside A, and six known iridoid glucosides, pikuroside, aucubin, veronicoside, catalposide, amphicoside, and verminoside, were isolated from Veronica hederifolia together with a known megastigmane glucoside, 3-hydroxy-5,6-epoxy-beta-ionol-9-O-beta-D-glucopyranoside, and a hexitol, dulcitol. The structures of the isolated compounds were established by the extensive 1D...