1,723,240 research outputs found
Bellina Robineau-Desvoidy 1863
No full text<p> <b>55</b>. <b>Bellina Robineau-Desvoidy</b>, <b>1863b</b>: <b>194</b>.</p> <p> ORIGINALLY INCLUDED SPECIES: <i>Bellina melanura</i> Robineau-Desvoidy, 1863.</p> <p> TYPE SPECIES: <i>Bellina melanura</i> Robineau-Desvoidy, 1863, by monotypy.</p> <p> CURRENT STATUS: Valid genus [<i>teste</i> Crosskey (1977: 591)].</p> <p>FAMILY: TACHINIDAE.</p>Published as part of <i>Evenhuis, Neal L., O'Hara, James E., Pape, Thomas & Pont, Adrian C., 2010, 2373, pp. 1-265 in Zootaxa 2373</i> on page 4
Le port protohistorique de Khao Sam Kaeo en Thaïlande péninsulaire
No full textBellina Bérénice. Le port protohistorique de Khao Sam Kaeo en Thaïlande péninsulaire. In: Bulletin de l'Ecole française d'Extrême-Orient. Tome 89, 2002. pp. 329-343
C. GOLDONI, Drammi per musica, sito internet, a cura di D. Albanese (progetto grafico), A. L. Bellina (progetto scientifico e cura dei testi), M. I. Biggi (ricerca iconografica), L. Tessarolo (progetto informatico), S. Urbani e A. Vencato (cura dei testi) (carlogoldoni.it), 2015.
No full text[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 4 (220)]
No full textBellina, Tochter des verstorbenen Bertinus, seinerseits genannt Sargezius, und Frau des Bertollus, Sohn des verstorbenen Petrus de Porauis, aus Gessate, wohnhaft in Ripalta, bestellt Bertrammus und Zoanollus, beide aus Carugo, und Bellotollus aus Desio, alle Bürger Mailands, zu ihren procuratores.Handschrift DE-3, GND 2024680-8, Signatur: Morbio 4 (220)Die Illustrationen sind: NotarszeichenÜberlieferungsart: originalBeschreibstoff: PergamentErhaltungszustand: moderatHandschriftUrkund
Kolkata 2011 - Abstract B. Bellina
No full textBérénice BELLINA CNRS, UMR 7528, Paris Cultural dialogue between the Bay of Bengal and the South China Sea from a cosmopolitan industrial city-port of the Thai-Malay Peninsula (late first millennium BCE) The Thai-Malay peninsula is known to have been a crossroads for regional and trans-Asiatic exchange, receiving and redistributing cultural features from East and South Asia. The Thai-French archaeological mission in the Thai-Malay peninsula[1] has conducted excavations from 2005 to 2009 at Kh..
Présentation
No full textBellina-Pryce Bérénice. Présentation. In: Bulletin de l'Ecole française d'Extrême-Orient. Tome 93, 2006. pp. 249-255
Regiocontrolled Synthesis of 1,2- Diaryl 1H imidazoles by Palladium and Copper Mediated Diorect Coupling of 1-Aryl-1H-Imidazoles with Aryl Halides under ligandless conditions
No full textA large variety of 1,2-diaryl-1H-imidazoles, including a selective
COX-2 inhibitor, have been regioselectively synthesised
in moderate to high yields by direct coupling of 1-aryl-
1H-imidazoles with aryl iodides or bromides in DMF in the
presence of CsF and catalytic amounts of Pd(OAc)2 under
ligandless conditions. A possible mechanism for this new
highly regioselective C-2 arylation reaction, involving the
formation of an organocopper(I) derivatives followed by a
transmetallation reaction with an arylpalladium(II) halide
Introduction
Imidazoles possessing two aryl substituents appear frequently
in molecules that elicit important biological responses.
Thus, some 1,5-diaryl-1H-imidazoles 1 (Figure 1)
include substances that act as selective inhibitors of cyclooxygenase-
2 (COX-2)[1] and are cytotoxic against a variety
of human cancer cell lines.[2] On the other hand, some 1,2-
diaryl-1H-imidazoles 2 have been reported to be antagonists
of the cannabinoid CB1 receptor[3,4] or to be able to
inhibit COX-2 selectively.[5,6,7] The biological activities of
compounds 1 and 2 have made them popular synthetic targets,
and numerous methods for the synthesis of these heterocycles
have been developed.[8,9] These synthetic methods,
however, involve the construction of the imidazole ring by
multi-step reaction sequences and, before our studies, no
simple and straightforward synthesis of compounds 1 and
2 had been described, with the exception of that of com-
[a] Dipartimento di Chimica e Chimica Industriale, University of
Pisa,
Via Risorgimento 35, 56126 Pisa, Italy
Fax: +39-0502219260
E-mail: [email protected], [email protected]
[b] Dipartimento S.T.A.A.M., Universiy of Molise,
86100 Campobasso, Italy
[c] Istituto di Metodologie Chimiche, CNR,
via Salaria Km 29.300, 00016 Monterotondo Stazione, Roma,
Italy
[d] University of Provence, Jeune Equipe Traces, Centre de Saint-
Jerome,
Case 511, 13397 Marseille Cedex, France
Supporting information for this article is available on the
WWW under http://www.eurjoc.org or from the author.
Eur. J. Org. Chem. 2006, 693–703 © 2006 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 693
species and a reductive elimination, is proposed. New onestep
procedures for the synthesis of 1,2,5-triaryl-1H-imidazoles,
based on palladium- and copper-mediated arylation
of 1-aryl-1H-imidazoles, have also been developed. Interestingly,
some imidazole derivatives prepared in this study have
been found to exhibit significant cytotoxic activity against
some human tumour cell lines
Peter Francis Jr. : Asia's Maritime Bead Trade - 300 B.C. to the Present
No full textBellina Bérénice. Peter Francis Jr. : Asia's Maritime Bead Trade - 300 B.C. to the Present. In: Bulletin de l'Ecole française d'Extrême-Orient. Tome 89, 2002. pp. 380-385
Isolation and characterisation of sesquiterpene synthase from aromatic orchid Phalaenopsis bellina (Rchb.f.) Christenson
No full textBackground Phalaenopsis bellina, an orchid native to Borneo, is renowned for its unique appearance. It releases distinct fragrances, which have been linked to the presence of terpenoids. However, the identifcation and study of sesquiterpene synthase in P. bellina remain limited. In this study, we examines the functional characterisation of terpene synthase (TPS) from P. bellina, known as PbTS, through recombinant protein expression and its manifestation in the fower. Methods and Results Gene annotation of PbTS revealed that the inferred peptide sequence of PbTS comprises 1,680 bp nucleotides encoding 559 amino acids with an estimated molecular mass of 65.2 kDa and a pI value of 5.4. A similarity search against GenBank showed that PbTS shares similarities with the previously published partial sequence of P. bellina (ABW98504.1) and Phalaenopsis equestris (XP_020597359.1 and ABW98503.1). Intriguingly, the phylogenetic analysis places the PbTS gene within the TPS-a group. In silico analysis of PbTS demonstrated stable interactions with farnesyl pyrophosphate (FPP), geranyl pyrophosphate (GPP), and geranylgeranyl pyrophosphate (GGPP). To verify this activity, an in vitro enzyme assay was performed on the PbTS recombinant protein, which successfully converted FPP, GPP, and GGPP into acyclic sesquiterpene β-farnesene, yielding approximately 0.03 mg/L. Expressional analysis revealed that the PbTS transcript was highly expressed in P. bellina, but its level did not correlate with β-farnesene levels across various fowering time points and stages. Conclusion The insights gained from this study will enhance the understanding of terpenoid production in P. bellina and aid in the discovery of novel fragrance-related genes in other orchid species
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