نتایج جستجو برای: pestalotiopsis
تعداد نتایج: 371 فیلتر نتایج به سال:
As there is a continuous search for the alternative source for taxol, a million dollar drug due to its scarcity scientists have chosen microorganism as one of the alternate sources.Pestalotiopsis breviseta CR01 produces taxol invitro which was isolated from the plant Catharanceus roceus. The optimum growth of this fungus was analyzed by varying different growth parameters. The presence of taxol...
Chemical investigations of a fermentation culture from the endophytic fungus Pestalotiopsis sp. yielded three novel caprolactams, pestalactams A-C (). The structures of were determined by analysis of 1D and 2D-NMR, UV, IR, and MS data. The structure of pestalactam A was confirmed following single crystal X-ray diffraction analysis. Pestalactams A-C are the first C-7 alkylated caprolactam natura...
Six new ambuic acid (1) derivatives (2-7) and a new torreyanic acid analogue (8) have been isolated from the crude extract of endophytic fungus Pestalotiopsis sp. inhabiting the lichen Multiclavula [corrected] sp. The structures of these compounds were elucidated primarily by NMR and MS methods, and their absolute configurations were assigned by application of the CD excitation chirality method...
The title compound, C11H18O5, was isolated from a liquid culture of Pestalotiopsis sp. In the mol-ecule, the pyran-2-one ring assumes a half-chair conformation. The two terminal C atoms of the pentyl group were refined as disordered over two sets of sites, with refined occupancies of 0.881 (10) and 0.119 (10). In the crystal, mol-ecules are linked via O-H⋯O hydrogen bonds forming a three-dimens...
Two new sesquiterpenes, 1β,5α,6α,14-tetraacetoxy-9α-benzoyloxy-7β H-eudesman-2β,11-diol (1) and 4α,5α-diacetoxy-9α-benzoyloxy-7βH-eudesman-1β,2β,11, 14-tetraol (2), were produced as stress metabolites in the cultured mycelia of Pestalotiopsis sp. Z233 isolated from the algae Sargassum horneri in response to abiotic stress elicitation by CuCl2. Their structures were established by spectroscopic ...
Photinides A-F (1-6), six new unique benzofuranone-derived gamma-lactones, have been isolated from the crude extract of the plant endophytic fungus Pestalotiopsis photiniae. The structures of these compounds were elucidated primarily by NMR spectroscopy, and their absolute configurations were assigned by application of the CD excitation chirality method. Compounds 1-6 displayed modest cytotoxic...
چکیده طی بازدیدها از میوهفروشیهای شهرستان ارومیه در طول تابستان و پاییز سال 1392، نشانههای پوسیدگی بهطور معمول روی میوههای موز دیده شد. ابتدا سطح پوست میوهها قهوهای رنگ شده و به تدریج قهوهای شدن به داخل گوشت میوه گسترش مییابد و بعد از مدتی، کل بافت میوه دچار پوسیدگی میشود. در سطح بافتهای قهوهای شده میوه، ریسههای سفید رنگ قارچ به فراوانی رشد نموده و بعد از گذشت یک هفته، ر...
Bioremediation is an important approach to waste reduction that relies on biological processes to break down a variety of pollutants. This is made possible by the vast metabolic diversity of the microbial world. To explore this diversity for the breakdown of plastic, we screened several dozen endophytic fungi for their ability to degrade the synthetic polymer polyester polyurethane (PUR). Sever...
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