نتایج جستجو برای: aculeata
تعداد نتایج: 589 فیلتر نتایج به سال:
Several known triterpenoids have been isolated from the roots of Lantana camara L. along with two new ones namely: 3ß,19α-dihydroxy-ursan-28-oic acid (7) and methyl 21,22ß-epoxy-3ß-hydroxy-olean-12-en-28-oate (8a). The hepatoprotective principle, oleanolic acid (1), from the roots has been converted into its 28-->13ß-lactone 10 by a facile photo-oxidation reaction. The leaves of L. camara have ...
Accepted 5 January 1999 Carpenter, J. M. & W. C. Wheeler. (1999). Towards simultaneous analysis of molecular and morphological data in Hymenoptera. Ð Zoologica Scripta 28, 251±260. Principles and methods of simultaneous analysis in cladistics are reviewed, and the first, preliminary, analysis of combined molecular and morphological data on higher level relationships in Hymenoptera is presented ...
An extract of the red alga, Neorhodomela aculeata, exhibited antiviral activity against human rhinoviruses. Bioassay-guided purification was performed to yield six compounds, which were subsequently identified as lanosol (1) and five polybromocatechols (2-6) by spectroscopic methods, including 1D and 2D NMR and mass spectrometric analyses. Structurally, all of these compounds, except compound 5...
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