Relevant bibliographies by topics / Retronecina

Contents

  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Retronecina'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Retronecina.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Retronecina"

1

El-Shazly, Assem, M. Abdel-All, Andreas Tei, and Michael Wink. "Pyrrolizidine Alkaloids from Echium rauwolfii and Echium horridum (Boraginaceae)." Zeitschrift für Naturforschung C 54, no. 5-6 (1999): 295–300. http://dx.doi.org/10.1515/znc-1999-5-601.

Full text
Abstract:
Abstract Echimidine was isolated from Echium rauwolfii and Echium horridum and identified by MS, 1H-and 13C NMR as a major alkaloid. In addition, structures of 12 minor alkaloids were inferred from GLC and GLC-MS analyses: 7-angeloylretronecine, 7-tigloylretronecine, lycopsamine, 7-acetyllycopsamine, uplandicine, 7-angeloyllycopsamine, 7-tigloyllycopsamine, tigloyl isomer of echimidine, 7-angeloyl-9-(2-methylbutyryl)retronecine, 7-tigloyl-9-(2-methylbutyryl)retronecine, 7-angeloyl-9-(2,3-dihydroxybutyryl)retronecine, and 7-tigloyl-9-(2,3-dihydroxybutyryl)retronecine. Both species had similar a
APA, Harvard, Vancouver, ISO, and other styles
2

Clare, BW, V. Ferro, BW Skelton, RV Stick, and AH White. "Approaches to the Synthesis of Retronecine From Some Pyrrolidine Precursors." Australian Journal of Chemistry 46, no. 6 (1993): 805. http://dx.doi.org/10.1071/ch9930805.

Full text
Abstract:
Procedures are described for the attempted conversion of the pyrrolidine (2) into a bicyclic system that would ultimately lead to retronecine (3). The only molecule to be isolated from these attempts was the epimeric ketone (6), and AM1 and MM2 calculations were used to probe this apparently favoured isomerization. Alternative procedures were then investigated that sought to convert the pyrrolidine (1) into precursors to retronecine, and notable successes were obtained with the addition of the amine (21) to both nitroethene and ethyl 2-diethylphosphonoacrylate. However, not only were these pre
APA, Harvard, Vancouver, ISO, and other styles
3

Ehmke, Adelheid, Ludger Witte, Andreas Biller, and Thomas Hartmann. "Sequestration, N-Oxidation and Transformation of Plant Pyrrolizidine Alkaloids by the Arctiid Moth Tyria jacobaeae L." Zeitschrift für Naturforschung C 45, no. 11-12 (1990): 1185–92. http://dx.doi.org/10.1515/znc-1990-11-1217.

Full text
Abstract:
Larvae of the arctiid moth Tyria jacobaeae reared on Senecio jacobaea or S. vulgaris take up and store pyrrolizidine alkaloids (PAs) from their host plants. Individual PAs are taken up without preference. The PA patterns found in the insect bodies correspond to the PA composi­tion of their host plants. Like plants the insects store PAs as N-oxides, and larvae as well as pupae are specifically able to N -oxidize any tertiary PA. Callimorphine (O9-(2-methyl-2-acetoxybutanoyl)-retronecine), an insect PA well known from several arctiids, was found in pupae and imagines of Tyria which as larvae had
APA, Harvard, Vancouver, ISO, and other styles
4

Yan, J., Q. Xia, MW Chou, and PP Fu. "Metabolic activation of retronecine and retronecine N-oxide – formation of DHP-derived DNA adducts." Toxicology and Industrial Health 24, no. 3 (2008): 181–88. http://dx.doi.org/10.1177/0748233708093727.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Zheng, Pimiao, Yuliang Xu, Zhenhui Ren, et al. "Toxic Prediction of Pyrrolizidine Alkaloids and Structure-Dependent Induction of Apoptosis in HepaRG Cells." Oxidative Medicine and Cellular Longevity 2021 (January 2, 2021): 1–12. http://dx.doi.org/10.1155/2021/8822304.

Full text
Abstract:
Pyrrolizidine alkaloids (PAs) are common phytotoxins and could cause liver genotoxicity/carcinogenicity following metabolic activation. However, the toxicity of different structures remains unclear due to the wide variety of PAs. In this study, the absorption, distribution, metabolism, excretion, and toxicity (ADMET) of 40 PAs were analyzed, and their toxicity was predicted by Komputer Assisted Technology (TOPKAT) using Discovery Studio software. The in silico results showed that all PAs except retronecine had good intestinal absorption, and all PAs were predicted to have different toxicity ra
APA, Harvard, Vancouver, ISO, and other styles
6

Culvenor, CCJ, and MF Mackay. "The Absolute Structure of Latifoline." Australian Journal of Chemistry 45, no. 2 (1992): 451. http://dx.doi.org/10.1071/ch9920451.

Full text
Abstract:
The absolute structure of latifoline, a pyrrolizidine diester alkaloid of retronecine and latifolic and angelic acids, has been defined by single-crystal X-ray crystallographic analysis of the hydrobromide salt hydrate. Orthorhombic crystals of C20H27NO7.HBr.H2O belong to the space group P 2′2′2′ with a 7.279(1), b 17.898(3), c 17.922(2) � and V 2334-9(8) � 3 . The structure has been refined to an R index of 0.054 for 1725 observed terms. The absolute configuration has been assigned by comparison with that of retronecine and also determined independently by X-ray examination of selected Bijvoe
APA, Harvard, Vancouver, ISO, and other styles
7

Morrie Craig, A., Jeannette T. Hovermale, Fraser F. Fleming, and James D. White. "Improved Labelling Methods for C9-2H-Retronecine." HETEROCYCLES 38, no. 1 (1994): 135. http://dx.doi.org/10.3987/com-93-6543.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Glinski, J. A., D. VanDerveer, and L. H. Zalkow. "Diastereoisomeric epoxides of heliotridine and retronecine, C8H13NO3." Acta Crystallographica Section C Crystal Structure Communications 41, no. 9 (1985): 1345–48. http://dx.doi.org/10.1107/s0108270185007715.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ferro, V., BW Skelton, RV Stick, and AH White. "The Synthesis of Some Pyrrolidines as Potential Precursors to Retronecine." Australian Journal of Chemistry 46, no. 6 (1993): 787. http://dx.doi.org/10.1071/ch9930787.

Full text
Abstract:
Methyl β-D-galactopyranoside was converted into methyl 4-azido-3-O-benzyl-6-O-t-butyldiphenylsilyl-2,4-dideoxy-β-D-arabino-hexoside, but subsequent transformation of the anomeric centre into a dithioacetal was unsatisfactory. Alternatively, methyl β-D- galactopyranoside easily gave methyl 4-azido-3,6-di-O-benzyl-2,4-dideoxy-β-D-arabino-hexoside, and this could be transformed by a reductive amination into two pyrrolidines as potential precursors to retronecine. Related chemistry gave (4S,5S,6R)-6-benzyloxy-4-benzyloxymethyl-3-oxa-1-azabicyclo[3.3.0]octan-2-one, the structure of which was confir
APA, Harvard, Vancouver, ISO, and other styles
10

Gelbaum, L. T., J. A. Glinski, D. VanDerveer, and L. H. Zalkow. "Retronecine and heliotridine, C8H13NO2: diastereoisomeric pyrrolizidine necine bases." Acta Crystallographica Section C Crystal Structure Communications 41, no. 9 (1985): 1342–45. http://dx.doi.org/10.1107/s0108270185007703.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Retronecina"

1

Conegero, Leila de Souza. "Estudos visando a sintese de alcaloides pirrolizidinicos e indolizidinicos : aproveitamento da (+)-retronecina e do acido D-isoascorbico." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249280.

Full text
Abstract:
Orientador: Ronaldo Aloise Pilli<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-08T05:17:50Z (GMT). No. of bitstreams: 1 Conegero_LeiladeSouza_D.pdf: 3438551 bytes, checksum: 26a173748a7748d7ec479a812badeeb7 (MD5) Previous issue date: 2006<br>Resumo: O trabalho desenvolvido visou a obtenção de alcalóides pirrolizidínicos e indolizidínicos utilizando a (+)-retronecina (1) e o ácido D-isoascórbico (35D) como matérias primas, respectivamente. A retronecina (1) foi isolada da espécie vegetal Senecio brasiliensis. Para a prepar
APA, Harvard, Vancouver, ISO, and other styles
2

Smith, Joshua C. "Studies towards the total synthesis of (+)-retronecine and anthracimycin." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/16427/.

Full text
Abstract:
This thesis consists of two separate projects. The first project involved an attempted total synthesis of (+)-retronecine A, a poisonous pyrrolizidine alkaloid via a novel asymmetric α-lithiation-substitution reaction of N-thiopivaloyl azetidine B, mediated by a chiral diamine. A total synthesis was not possible and our attention turned towards elucidating the mechanism of enantioinduction. Of particular note was how the use of carbon dioxide and methyl chloroformate as electrophiles gave products with the opposite configuration under otherwise identical reaction conditions (using (–)-spartein
APA, Harvard, Vancouver, ISO, and other styles
3

Zirngibl, Katharina [Verfasser], Reinhard [Akademischer Betreuer] Nießner, Dietmar [Gutachter] Knopp, and Reinhard [Gutachter] Nießner. "Generierung und Charakterisierung eines monoklonalen Antikörpers für die Detektion von Retronecin-basierten Pyrrolizidinalkaloiden und seine Verwendung für die Entwicklung eines Immunoassays / Katharina Zirngibl ; Gutachter: Dietmar Knopp, Reinhard Nießner ; Betreuer: Reinhard Nießner." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/122503910X/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Huang, Jie-Ming, and 黃界閔. "The Application of Free Radical Cyclizations in the Synthesis of Heliotridine, Retronecine and Other Analogous Pyrrolizidine Alkaloids." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/95375293570658711876.

Full text
Abstract:
博士<br>國立臺灣大學<br>化學研究所<br>90<br>英 文 摘 要 Using the radical cyclization strategy developed previously in our laboratory for the synthesis of the alkaloid (-)-supinidine, we now synthesized two pyrrolidine alkaloids (+)-heliotridine and (-)-retronecine. Both alkaloids contained two stereogenic centers. According to similar methodology, we are also able to synthesize 7a-epi-uspallatinecine which is an analog of the natural pyrrolizidine alkaloid uspallatinecine. Starting from readily available enantio-pure starting material L-(-)-malic acid, we prepared a chiral imide 70 tha
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography