<p><strong>Secalonic Acid A from Pseudoparmelia sphaerospora (Nyl.) Hale and P. hypomilta (Fée) Hale (Parmeliaceae)</strong></p>
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چکیده
منابع مشابه
Bioactive derivatives obtained from lecanoric acid, a constituent of the lichen Parmotrema tinctorum (Nyl.) Hale (Parmeliaceae)
With the aim of obtaining new compounds with potential antifungal activity, lecanoric acid, a chemical constituent of the lichen Parmotrema tinctorum and its derivatives prepared from structural modification were tested against the fungus Cladosporium sphaerospermum, by employing the bioautographic method. Activity of the derivatives ranged from 10to 1-μg concentrations. Results demonstrated th...
متن کاملPhenolic constituents from the lichen Parmotrema stuppeum (Nyl.) Hale and their antioxidant activity.
Lichen, Parmotrema stuppeum (P. stuppeum) was successively extracted with benzene and acetone. Both the extracts were fractionated on 1% oxalic acid impregnated silica gel column to obtain four phenolic compounds. The structures of compounds were identified by 1H and 13C NMR spectra as methyl orsenillate, orsenillic acid, atranorin and lecanoric acid respectively. Antioxidant activity of benzen...
متن کاملHale Stain for Sialic Acid-containing Mucins
The feasibility of using the Hale stain to identify cellular sialic acid-containing mucins by electron microscopy was investigated. Three kinds of mouse ascites tumor cells were fixed in neutral buffered formalin, exposed to fresh colloidal ferric oxide, treated with potassium ferrocyanide, imbedded in Selectron, and sectioned for electron microscopy. Additional staining with uranyl acetate and...
متن کاملAre there a“Hale” and a“Bopp” in comet Hale-Bopp?
Comet C/1995 O1 Hale-Bopp was observed with the adaptive optics system adonis on the ESO 3.6 m telescope at La Silla, Chile, through the broadband J, H, K, SK (Short K) filters on 6 November 1997 and 15 January 1998. After processing of the images using different restoration techniques, the maximum brightness in the coma appeared as a double peak. The separation between the two components was 0...
متن کاملSir William Hale-White, K.B.E.
The Fellowship ofPost Graduate Medicine has to record with great regret the passing of yet another of its original friends and supporters. As we write we have before us a copy of the POST GRADUATE MEDICAL JOURNAL, Vol. I, No. i, of October, I925, with the Foreword written by its founder, who subsequently held office as President of the Fellowship. ' In Great Britain' said Sir William 'the best ...
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ژورنال
عنوان ژورنال: Bryophyte Diversity and Evolution
سال: 1995
ISSN: 2381-9685,2381-9677
DOI: 10.11646/bde.10.1.16