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0029065123
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Helichrysum aureonitens is a hairy perennial herb that grows in the Kwazulu-Natal province of South Africa. It belongs to a large genus of about 500 species. According to folklore, it has been used for centuries by the people of this province against infection. In 1995, Meyer (Meyer, J. J. M.; Afolayan, A. J. J. Ethnopharmacol. 1995, 47, 109-111.) found that the dichloromethane extract of H. aureonitens was active against a wide range of gram-positive bacteria, yet inactive against all gram-negative bacteria tested (including Escherichia coli).
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Helichrysum aureonitens is a hairy perennial herb that grows in the Kwazulu-Natal province of South Africa. It belongs to a large genus of about 500 species. According to folklore, it has been used for centuries by the people of this province against infection. In 1995, Meyer (Meyer, J. J. M.; Afolayan, A. J. J. Ethnopharmacol. 1995, 47, 109-111.) found that the dichloromethane extract of H. aureonitens was active against a wide range of gram-positive bacteria, yet inactive against all gram-negative bacteria tested (including Escherichia coli).
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4
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53049092962
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Chaetomium spp. are filamentous fungi found in soil, air, and plant debris. As well as being a contaminant, Chaetomium spp. are also causative agents of infections in humans. The Chaetomium genus contains over 100 species, with the most common being C. atrobrunneum, C. funicola, C. globosum, and C. strumarium.
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Chaetomium spp. are filamentous fungi found in soil, air, and plant debris. As well as being a contaminant, Chaetomium spp. are also causative agents of infections in humans. The Chaetomium genus contains over 100 species, with the most common being C. atrobrunneum, C. funicola, C. globosum, and C. strumarium.
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6
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53049094573
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53049096473
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Ph.D. thesis, Heinrich-Heine-Universität, Germany
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Teuscher, F. Ph.D. thesis, Heinrich-Heine-Universität, Germany, 2005.
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Teuscher, F.1
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48249088035
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29044439317
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18
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53049088802
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Activation of the ring oxygen could potentially result in the opening of the tetrahydrofuran ring at C-2 to generate a stabilized pentadienyl cation
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Activation of the ring oxygen could potentially result in the opening of the tetrahydrofuran ring at C-2 to generate a stabilized pentadienyl cation.
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19
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34447096864
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(a) Goubert, M.; Toupet, L.; Sinibaldi, M. E.; Canet, I. Tetrahedron 2007, 63, 8255-8266.
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20
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0035920876
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22
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53049083820
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Confirmation that no loss of stereochemical integrity had occurred along the synthetic sequence was confirmed by chiral HPLC analysis of 18 and comparison with a racemic sample see the Supporting Information
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Confirmation that no loss of stereochemical integrity had occurred along the synthetic sequence was confirmed by chiral HPLC analysis of 18 and comparison with a racemic sample (see the Supporting Information).
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23
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11144313032
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(a) Dewi, P.; Randl, S.; Blechert, S. Tetrahedron Lett. 2005, 46, 577-580.
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24
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13444259632
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27
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53049109566
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A sealed tube was employed owing to the volatility of diene 19 (bp 42°C).
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A sealed tube was employed owing to the volatility of diene 19 (bp 42°C).
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28
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53049088380
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Metathesis catalyst 20 and 21 were provided by Dr. David Lindsay, University of Reading, UK.
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Metathesis catalyst 20 and 21 were provided by Dr. David Lindsay, University of Reading, UK.
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0030878066
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0034535447
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46
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0035954862
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8344266759
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51
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53049098514
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The ratio of (E,E)-33:(E,Z)-33 improved from 4:1 to 5:1 after purification by column chromatography.
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The ratio of (E,E)-33:(E,Z)-33 improved from 4:1 to 5:1 after purification by column chromatography.
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53
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53049108688
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3OD.
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3OD.
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54
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34447289464
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