نتایج جستجو برای: piperaceae

تعداد نتایج: 452  

Journal: :Pure and Applied Chemistry 2007

2009
Clécio S. Ramos Massuo J. Kato

O 3-geranil-4-hidroxibenzoato de metila (1), um novo produto natural, foi isolado das folhas de Piper arboreum (Piperaceae). O metabolismo das folhas de P. arboreum pelo besouro Naupactus bipes (Germar, 1824 Coleoptera: Curculionidae) resultou na biotransformação de 1 para o ácido 3-geranil-4-hidroxibenzoico (2). As estruturas dos metabólitos 1 e 2 foram determinadas com base na interpretação d...

Journal: :Molecules 2013
Fernando M dos S Junior Leosvaldo S M Velozo Erika M de Carvalho André M Marques Ricardo M Borges Ana Paula F Trindade Maria Isabel S dos Santos Ana Carolina F de Albuquerque Fabio L P Costa Maria Auxiliadora C Kaplan Mauro B de Amorim

3-Ishwarone, (1), a sesquiterpene with a rare ishwarane skeleton, was isolated from Peperomia scandens Ruiz & Pavon (Piperaceae). Its structure was unambiguously determined by 1D- and 2D-NMR and infrared analyses, as well as by comparative theoretical studies which involved calculations of 13C-NMR chemical shifts, using the Density Functional Theory (DFT) with the mPW1PW91 hybrid functional and...

Journal: :Journal of helminthology 2011
L N Rapado E Nakano F P Ohlweiler M J Kato L F Yamaguchi C A B Pereira T Kawano

Schistosomiasis is a tropical disease caused by Schistosoma and occurs in 54 countries, mainly in South America, the Caribbean region, Africa and the eastern Mediterranean. Currently, 5 to 6 million Brazilian people are infected and 30,000 are under infection risk. Typical of poor regions, this disease is associated with the lack of basic sanitation and very frequently to the use of contaminate...

2016
Arpron Leesombun Sookruetai Boonmasawai Naomi Shimoda Yoshifumi Nishikawa

Herbal medicines and natural herb extracts are widely used as alternative treatments for various parasitic diseases, and such extracts may also have potential to decrease the side effects of the standard regimen drugs used to treat toxoplasmosis (sulfadiazine-pyrimethamine combination). We evaluated how effective the Thai piperaceae plants Piper betle, P. nigrum and P. sarmentosum are against T...

2003
Suresh Gandhi Sree Rama rajasekhar

The Piper betle (Tamil: vetrilai) is a glabrous climbing vine belonging to the family Piperaceae . Essential oil from vellaikodi variety of Piper betle L leaves (Piperaceae) was extracted by hydro-distillation method in a clevenger type apparatus. The essential oil thus obtained was analyzed by gas chromatography and gas chromatography – mass spectroscopy. Sixty five components were identified ...

Journal: :Annals of the Missouri Botanical Garden 1966

2015
Carlo L. Seifert Florian Bodner Gunnar Brehm Konrad Fiedler

The very species-rich tropical moth genus Eois Hübner (Lepidoptera: Geometridae) is a promising model group for studying host plant specialization and adaptive radiation. While most Eois species are assumed to be specialized herbivores on Piper L. species, records on other plant taxa such as Peperomia Ruiz & Pavón (Piperaceae) are still relatively scarce. Moreover, little is known about life hi...

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