Institution
University of Antananarivo
Education•Antananarivo, Madagascar•
About: University of Antananarivo is a education organization based out in Antananarivo, Madagascar. It is known for research contribution in the topics: Population & Lemur. The organization has 1561 authors who have published 1703 publications receiving 30922 citations. The organization is also known as: Tananarive University & Antananarivo University.
Topics: Population, Lemur, Biodiversity, Animal ecology, Species richness
Papers published on a yearly basis
Papers
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TL;DR: This study shows that A. theiformis is a reservoir of xanthones and makes it possible to define a framework for its reasoned management, although the micrantha variety is richer in mangiferin.
Abstract: Xanthones, and more specifically mangiferin, are molecules used in cosmetics for their photoprotective and anti-aging properties. The richness in xanthones of Aphloia theiformis leaves, a common shrub in Madagascar, can reach almost 12% (in relation to dry biomass). Amongst the A. theiformis studied, two major groups of individuals have been determined: those presenting a high proportion of mangiferin (up to 80% of the xanthones) and those presenting a high proportion of polar xanthones (not yet identified). Our study shows that: i) for each subject, the xanthone content remains stable over time (no seasonal variation); ii) the majority of the trees developing in the light belong to the first group (rich in mangiferin), whereas the individuals growing in the undergrowth are richer in polar xanthones; iii) the distribution of the two groups seems not to have any correlation with taxonomy and, moreover, with the known varieties of A. theiformis, although the micrantha variety is richer in mangiferin. Overall, this information indicates that A. theiformis is a reservoir of xanthones and makes it possible to define a framework for its reasoned management.
19 citations
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TL;DR: In this paper, the authors argue that allowing the sale of these stocks would encourage further illegal harvest and that no suitable tools are available to identify, control or monitor standing trees or cut timber, and substantial knowledge gaps regarding species limits, population sizes, distribution and abundance.
19 citations
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TL;DR: In this article, a series of enantiopure 1,4-amino alcohols with a [3]ferrocenophane backbone have been synthesized and used in the asymmetric ethylation of benzaldehyde by diethylzinc and gave good catalytic properties.
Abstract: A series of enantiopure 1,4-amino alcohols with a [3]ferrocenophane backbone have been synthesized. Candida rugosa lipases were used in a key step allowing the resolution of amino alcohol (1S,Rp)-1. Two other amino alcohols (1S,2S,Rp)-2 and (1S,2S,Rp)-3 were prepared starting from (1S,Rp)-1. The new ligands have been used in the asymmetric ethylation of benzaldehyde by diethylzinc and gave good catalytic properties. One of these ligands was particularly efficient, while the yield of the catalytic test reaction was near to 100% and the enantiomeric excess was about 80%. All the ligands directed the catalytic process towards the same (1R)-1-phenylpropanol.
19 citations
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19 citations
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TL;DR: Four benzo[c]phenanthridine alkaloids have been isolated from the stem bark of Zanthoxylum madagascariense by extensive use of NMR spectroscopy.
19 citations
Authors
Showing all 1572 results
Name | H-index | Papers | Citations |
---|---|---|---|
Patricia C. Wright | 49 | 156 | 7970 |
Marc Lemaire | 48 | 399 | 9317 |
Steven M. Goodman | 39 | 249 | 7256 |
Patrick Mavingui | 37 | 114 | 4914 |
Elise Buisson | 31 | 130 | 3394 |
Jean-Michel Heraud | 29 | 124 | 3535 |
Steven M. Goodman | 28 | 77 | 4414 |
Florian Marks | 27 | 123 | 2844 |
L. Rakotondravohitra | 25 | 41 | 2490 |
Jonah Ratsimbazafy | 23 | 74 | 2174 |
Jérôme Ballet | 22 | 143 | 1741 |
Carine E. Chan-Thaw | 22 | 49 | 1809 |
Lydie Chapuis-Lardy | 22 | 46 | 2408 |
Arsène Ratsimbasoa | 21 | 58 | 1767 |
R. Raboanary | 20 | 29 | 2032 |