نتایج جستجو برای: apocynaceae
تعداد نتایج: 1238 فیلتر نتایج به سال:
The first host plant record for Anastrepha fumipennis Lima (Diptera: Tephritidae) in Geissospermum laeve (Vell.) Baill (Apocynaceae) and for A. nascimentoi Zucchi found in Cathedra bahiensis Sleumer (Olacaceae) was determined in a host plant survey of fruit flies undertaken at the "Reserva Natural da Companhia Vale do Rio Doce". This reserve is located in an Atlantic Rain Forest remnant area, i...
While much work have been done on Catharan thus roseus (Apocynaceae) resulting in the isolation of about 100 alkaloids, there is persistent interest in the plant and new alkaloids continue to be reported. In continuation of our isolation and synthetic studies on the alkaloids of Catharanthus roseus [1 — 15], we have isolated a new alkaloid from the leaves of this plant by a combination of sele...
Stemmadenia tomentosa var. palmeri, Voacanga africana, Apocynaceae, Cell Suspension Cultures, Indole Alkaloids Cell suspension cultures of Stemmadenia tomentosa synthesized under normal growth condition the eight major indole alkaloids: (-)-tabersonine, (—)-minovincinine, (+)-conoflorine (voaphylline), condylocarpine, (+)-tubotaiwine (dihydrocondylocarpine), (-)-norfluorocurarine (vincanine), (...
Extracts of seven medicinal plants used specifically against cutaneous leishmaniasis in the Madre de Dios region of Peru were evaluated in vitro against promastigote and axenic amastigote forms of Leishmania amazonensis. One of them showed interesting leishmanicidal activities (IC(50)=5 microg/ml in amastigotes). Bio-guided isolation of the stem bark's ethanol extract of Himatanthus sucuuba (Sp...
Extracts from leaves and stem bark of Peschiera van heurkii (Muell. Arg.) L. Allorge (syn. Tabernaemontana van heurkii Muell. Arg., Apocynaceae) have been assayed for antileishmanial and antibacterial activities. The activities were concentrated in the alkaloid fractions which yielded 20 indole and bisindole alkaloids. The strongest leishmanicidal and antibacterial activities were observed with...
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