Relevant bibliographies by topics / Drypetes

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Academic literature on the topic 'Drypetes'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Drypetes"

1

Houngnon, Alfred, Aristide C. Adomou, William D. Gosling, and Peter A. Adeonipekun. "A checklist of vascular plants of Ewe-Adakplame Relic Forest in Benin, West Africa." PhytoKeys 175 (April 12, 2021): 151–74. http://dx.doi.org/10.3897/phytokeys.175.61467.

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Covering 560.14 hectares in the south-east of Benin, the Ewe-Adakplame Relic Forest (EARF) is a micro-refugium that shows insular characteristics within the Dahomey Gap. It is probably one of the last remnants of tropical rain forest that would have survived the late Holocene dry period. Based on intensive field investigations through 25 plots (10 × 50 m size) and matching of herbarium specimens, a checklist of 185 species of vascular plant belonging to 54 families and 142 genera is presented for this forest. In addition to the name for each taxon, we described the life form following Raunkiaer’s definitions, chorology as well as threats to habitat. The Rubiaceae family was the richest (20 species) followed by the Fabaceae (15 species). Life forms showed the preponderance of phanerophytes (88%). The Chorological spectrum was dominated by Guineo-Congolean species (66%). Species richness estimated were 200.52 ± 9.2808 for Bootstrap; 217.62 ± 14.5972; 224.16 ± 15.3725 and 242.67 respectively for Chao, Jacknife1 and Jacknife2. Bootstrap appears to be the estimation closer to the field records. In Benin, EARF is home for Rinorea species described as West African forest bio-indicators and single location for Nesogordonia papaverifera, Mansonia altissima, Englerophytum oblanceolatum, Octolobus spectabilis, Vitex micrantha and most of Drypeteae tribe species (Drypetes aframensis, Drypetes afzelii, Drypetes gilgiana and Drypetes leonensis) recorded in Benin. Our results provides baseline information for further in-depth analysis of vegetation history in Benin by raising the question on the past floristic connection of the Dahomey gap and community engagement in conservation.
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Wandji, Jean, François Tillequin, Dulcie A. Mulholland, Agathe D. Temgoua, Jean-D. Wansi, Elisabeth Seguin, and Z. Tanee Fomum. "Phenolic constituents from Drypetes armoracia☆☆Part 4 in the series Drypetes studies." Phytochemistry 63, no. 4 (June 2003): 453–56. http://dx.doi.org/10.1016/s0031-9422(02)00630-1.

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Ge, Ying-Zi, Hua Zhang, Hong-Chun Liu, Lei Dong, Jian Ding, and Jian-Min Yue. "Cytotoxic dinorditerpenoids from Drypetes perreticulata." Phytochemistry 100 (April 2014): 120–25. http://dx.doi.org/10.1016/j.phytochem.2014.01.013.

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4

Chen, Wen-Hao, Guang-Ying Chen, Jing Wang, Yang Hui, Lei Liu, Jiao-Jiao Han, and Xiao-Ping Song. "Chemical Constituents of Drypetes congestiflora." Chemistry of Natural Compounds 51, no. 4 (July 2015): 797–99. http://dx.doi.org/10.1007/s10600-015-1416-3.

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5

KRISHNA, GOPAL, K. KARTHIGEYAN, W. ARISDASON, and T. CHAKRABARTY. "A new species of Drypetes (Putranjivaceae/Euphorbiaceae s.l.) from West Bengal, India." Phytotaxa 319, no. 3 (September 5, 2017): 271. http://dx.doi.org/10.11646/phytotaxa.319.3.6.

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A new species, Drypetes kalamii, collected from the subtropical forests of two different Protected Areas, Buxa National Park and Jaldapara National Park in the state of West Bengal, India, is described and illustrated. This new species closely resembles Drypetes ellisii, but differs in being small shrub (female plants) or scrambling shrub (male plants) with corrugated branches and puberulous branchlets, longer petioles, laminae abruptly acuminate with pointed apices, slender and puberulent fruiting pedicels with bracts and bracteoles and smaller, ovoid-globose drupes.
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6

Cheek, Martin, Nouhou Ndam, and Andrew Budden. "Notes on the threatened lowland forests of Mt Cameroon and their endemics including Drypetes burnleyae sp. nov., with a key to species of Drypetes sect. Stipulares (Putranjivaceae)." Kew Bulletin 76, no. 2 (June 2021): 223–34. http://dx.doi.org/10.1007/s12225-021-09947-2.

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SummaryThis paper reports a further discovery of a new endemic threatened species to science in the context of botanical surveys in the lowland coastal forests of Mount Cameroon in the Cross River-Sanaga interval of west-central Africa. These studies now focus on species discovery and conservation through the Tropical Important Plant Areas programme. New species to science continue to be discovered from Mt Cameroon. Most of these species are rare, highly localised, and threatened by habitat destruction, increasing the justification for improved conservation management of surviving habitat. Drypetes burnleyae is placed in and keyed out in Drypetes sect. Stipulares, a group mostly confined to Lower Guinea, here adjusted to accommodate nine species. The conservation status of Drypetes burnleyae is assessed as Endangered (EN B1+2ab(iii)) according to the 2012 criteria of the International Union for the Conservation of Nature. An updated overview of the plant endemics of Mt Cameroon is presented.
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7

Montaut, Sabine, Gina R. De Nicola, Huguette Agnaniet, Yves Issembe, Patrick Rollin, and Chantal Menut. "Probing for the presence of glucosinolates in three Drypetes spp. (Drypetes euryodes (Hiern) Hutch., Drypetes gossweileri S. Moore, Drypetes laciniata Hutch.) and two Rinorea spp. (Rinorea subintegrifolia O. Ktze and Rinorea woermanniana (Büttner) Engl.) from Gabon." Natural Product Research 31, no. 3 (September 26, 2016): 308–13. http://dx.doi.org/10.1080/14786419.2016.1236099.

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8

HARRIS, D. J., and A. H. WORTLEY. "A NEW SPECIES OF DRYPETES (PUTRANJIVACEAE) FROM THE CENTRAL AFRICAN REPUBLIC." Edinburgh Journal of Botany 63, no. 2-3 (July 2006): 253–56. http://dx.doi.org/10.1017/s096042860600059x.

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9

Radcliffe-Smith, A. "Notes on African Euphorbiaceae: XXIV: Drypetes (ii)." Kew Bulletin 45, no. 4 (1990): 671. http://dx.doi.org/10.2307/4113873.

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10

Awanchiri, Simon Suh, Hanh Trinh-Van-Dufat, Jovita Chi Shirri, Marlise Diane J. Dongfack, Guy Merlin Nguenang, Sabrina Boutefnouchet, Zacharias T. Fomum, et al. "Triterpenoids with antimicrobial activity from Drypetes inaequalis." Phytochemistry 70, no. 3 (February 2009): 419–23. http://dx.doi.org/10.1016/j.phytochem.2008.12.017.

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Dissertations / Theses on the topic "Drypetes"

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Dongfack, Jiofack Marlise Diane. "Etude phytochimique et valorisation biologique de quatre plantes camerounaises de la famille des Euphorbiaceae (Drypetes tessmanniana Pax et K. Hoffm. ) et des Moraceae (Ficus exasperata Vahl, Ficus natalensis Leprierii et Ficus cyathistipula Warburg)." Paris 5, 2010. http://www.theses.fr/2010PA05P611.

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Cette thèse, réalisée en cotutelle, s’inscrit dans le cadre des thématiques de recherche du Laboratoire de Pharmacognosie de l’Université Paris Descartes UMR 8638 et du Laboratoire de Phytochimie de l’Université de Yaoundé I. Elle vise essentiellement la recherche de molécules naturelles d’origine végétale bioactives, potentiellement intéressantes en thérapeutique. Ce travail est consacré à l’étude phytochimique de quatre plantes : une Euphorbiaceae, Drypetes tessmanniana Pax et K. Hoffm, trois Moraceae, Ficus exasperata Vahl, Ficus natalensis Leprierii et Ficus cyathistipula Warburg utilisées en médecine traditionnelle camerounaise pour le traitement de plusieurs infections. De l’espèce Drypetes tessmanniana, 7 triterpènes pentacycliques dont 2 dérivés nouveaux ont été isolés à savoir : lupan-20(29)-èn-3β,6α-ol et 3β-O-(E)-3,5-dihydroxycinnamoyl-olean-12-èn-11-one confirmant ainsi la richesse des espèces Drypetes en triterpènes pentacycliques. Les travaux effectués sur les espèces Ficus exasperata, Ficus natalensis et Ficus cyathistipula ont montré que les plantes du genre Ficus sont riches en métabolites secondaires variées (flavonoïdes, furocoumarines, céramides,…). Les structures des composés ont été élucidées grâce l’utilisation de techniques de RMN 1D et 2D et par spectrométrie de masse
This report deals with phytochemical study and antimicrobial activities of four Cameroonian plants belong to Euphorbiaceae (Drypetes tessmanniana) and Moraceae (Ficus exasperata, Ficus natalensis and Ficus cyathistipula) family selected in base of used in traditional medicine in Cameroon and taxonomic data. This study led to the isolation by chromatographic methods (CC, MPLC and OPLC) and characterization by spectroscopic methods (NMR, Mass, UV and IR) of several metabolites. Antibacterial and antifungal tests on extract, fractions and different compounds of Drypetes tessmanniana Pax and K. Hoffm and Ficus exasperata Vahl were carried out. Isolated pentacyclic triterpenes showed moderated antimicrobial activities while l’oxypeucedanine hydrate (R) and l’oxypeucedanine hydrate (S) isolated from Ficus exasperata showed a significant antibacterial and antifungal activities against Bacillus cereus, Candida albicans, Microsporum audouinii
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2

Letseka, Ntutu. "Evolution of myrosinase from drypetes." Thesis, 2014.

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Glucosinolates are a diverse group of molecules found in plants of the order Capparales and the genus Drypetes. Hydrolysis of glucosinolates is catalysed by a thioglucosidase, myrosinase. Myrosinase has not only been detected in almost all glucosinolate-containing plants but also in insect and microbial species. Phylogenetic analysis of glucosinolate-containing plants found that all were clustered together with the exception of the outlier genus Drypetes. The important question is whether myrosinase in Drypetes arose from the same ancestral gene as that in the Capparales, or whether it arose from a different source. Myrosinaselike activity was detected in D. natalensis. A candidate molecule for the observed activity was isolated and found to be a 50 kDa heterodimer with subunits of approximately 30 kDa and 20 kDa. This contrasts with Capparales myrosinases which are typically 130-150 kDa homodimers. A 1047 bp partial sequence corresponding to the larger subunit was obtained. Analysis of the nucleic acid and amino acid sequence showed that it was similar to the cupin superfamily of proteins which include the ubiquitous seed storage proteins. Phylogenetic analysis showed that the isolated protein was closely related to seed storage proteins. The results obtained here are suggestive of an independent origin of myrosinase activity in Drypetes. With the degree of functional plasticity observed in the cupin superfamily it is proposed that the isolated factor could have acquired myrosinaselike activity. However, purification and further characterisation of the enzyme responsible for the observed activity is still required to confirm the results
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3

Chen, Chia-Hua, and 陳家華. "The Bioactive Constituents of Drypetes hieranensis." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/89591151754309317550.

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碩士
國立臺灣大學
藥學系
85
The Bioactive Constituents of Drypetes hieranensis In the course of biological activity screening，the ethanolic extract of the leaves of Drypetes hieranensis Hay.( Euphobiaceous )，exhibited inhibitory effect against EBV- DNA polymerase．Hence, this study was aimed to study the boactive ingredients of this plant. The ethanolic extract of the leaves was divided into fractions soluble in chloroform, ethyl acetate， n-butanol and H2O by liquid-liquid partitioning. The chloroform soluble fraction was repeatedly chromatographed on silica gel columns to give compounds ( 12 ) ~ (17 ) and ( 9 )．Separation of the ethyl acetate and n-butanol soluble fractions over Sephadex LH-20 ，centrifugal partition chromatography ( C.P.C. )，and Toyoperal HW-40C columns afforded compounds ( 1 ) ~ ( 8 ) and ( 10 )~( 11 )．The structural elucidation of these compounds was conducted mainly by spectroscopic analysis. According to properties of the structures, they were classified into five categories: 1. Biflavones: podocarpusflavone A ( 1 ), amentoflavone ( 2 ) 2. Polyphenolic compounds: ethyl brevifolin carboxylate ( 3 ), ethyl gallate ( 4 ) ellagic acid ( 5 ), ellagic acid 4-O-α-L-rhamnoside ( 6 ), ellagic acid 4-O-β-D-xyloside ( 7 ), 3,3-O,O- dimethylellagic acid 4-O-α-L- rhamnoside ( 8 ), hexamethylcoruleoellagic acid ( 9 ). 3. Tannins: corilagin ( 10 ), geraniin ( 11 ) 4. Sterols: β-sitosterol / stigmasterol ( 12 ), β-sitosterol 3-β-D- glucoside / stigmasterol 3-β-D-glucoside ( 13 ). 5. Triterpenes: squalene (14), 3-oxofriefelan-30-ol (15), 3β,30- dihydroxyfriedelane (16) Among compounds isolated from ethyl acetate and n-butanol， componds (2) 、( 5 )、( 10 ) and (11) show anti-HIV-1 reverse transcriptase activity with the IC50 of 17.6, 21.9, 33.8 and 17.5μM respectively；besides，compounds (10)and ( 11 ) also showed anti-EBV DNA polymerase activity at IC50 29.0 and 27.1 μ M respectively．
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4

Matochko, Wadim. "Identification of Acetylcholinesterase Inhibiting Natural Products From Buxus natalensis and Drypetes gossweileri." 2010. http://hdl.handle.net/1993/4237.

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This thesis describes phytochemical studies on two medically important plants, Buxus natalensis and Drypetes gossweileri. Chemical investigation on the acetylcholinesterase inhibiting chloroform extracts, obtained at pH 7.0 and 9.5 resulted in the isolation of seven natural products: O10-natafuranamine (123), cyclonataminol A (124), 31-demethylbuxaminol A (125), buxaminol A (126), buxaminol C (127), p coumaroylputrescine (128) and methyl syringate (129). Compound 123 is a member of a rarely occurring class of Buxus alkaloids containing a tetrahydrofuran ring incorporated in its structure. Compounds 123-129 were isolated for the first time from this plant. Structures of compounds 123-129 were elucidated with the aid of NMR and MS spectral data. All of these isolates exhibited different levels of AChE inhibitory activities with compound 123 being significantly active in this bioassay with an IC50 of 8.5 µM compared to the rest of the isolates. Compounds 123-129 were inactive in antimicrobial assays. Phytochemical studies on the crude extract of Drypetes gossweileri resulted in the isolation of a new N-linked aromatic glycoside, N-β-glucopyranosyl-p-hydroxy phenyl acetamide (151), along with two known compounds, p-hydroxy phenyl acetic acid (152) and p hydroxyphenyl acetonitrile (153). Compounds 151-153 exhibited moderate to weak AChE inhibitory activities.
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5

Johnson, S. D., M. E. Griffiths, C. I. Peter, and M. J. Lawes. "Pollinators, “mustard oil” volatiles, and fruit production in flowers of the dioecious tree Drypetes natalensis (Putranjivaceae)." 2009. http://hdl.handle.net/10962/d1005948.

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The Putranjivaceae is an enigmatic family, notable for being the only lineage outside the Capparales to possess the glucosinolate biochemical pathway, which forms the basis of an induced chemical defense system against herbivores (the “ mustard oil bomb ” ). We investigated the pollination biology and fl oral scent chemistry of Drypetes natalensis (Putranjivaceae), a dioecious subcanopy tree with fl owers borne on the stem (caulifl ory). Flowering male trees were more abundant than female ones and produced about 10-fold more fl owers. Flowers of both sexes produce copious amounts of nectar on disc-like nectaries accessible to short-tongued insects. The main fl ower visitors observed were cetoniid beetles, bees, and vespid wasps. Pollen load analysis indicated that these insects exhibit a high degree of fi delity to D. natalensis fl owers. Insects effectively transfer pollen from male to female plants resulting in about 31% of female fl owers developing fruits with viable seeds. Cetoniid beetles showed signifi cant orientation toward the scent of D. natalensis fl owers in a Y-maze olfactometer. The scents of male and female fl owers are similar in chemical composition and dominated by fatty acid derivatives and isothiocyanates from the glucosinolate pathway. The apparent constitutive emission of isothiocyanates raises interesting new questions about their functional role in flowers.
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6

Chen, Li-chun, and 陳俐君. "1.Tissue Culture Study on Kalanchoe gracilis Hance 2.Studies on the Chemical Constituents of Litsea glutinosa (Lour.) C. B. Rob. and Drypetes littoralis (C. B. Rob) Merr." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/34181411954274574365.

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碩士
國立臺灣大學
藥學系
85
I. Tissue Culture Study on Kalanchoe gracilis Hance II. Studies on the Chemical Constituents of Litsea glutinosa (Lour.) C. B. Rob. and Drypetes littoralis (C. B. Rob.) Merr.
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Books on the topic "Drypetes"

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Ltd, ICON Group. DRYPERS CORP.: Labor Productivity Benchmarks and International Gap Analysis (Labor Productivity Series). 2nd ed. Icon Group International, 2000.

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Ltd, ICON Group. DRYPERS CORP.: International Competitive Benchmarks and Financial Gap Analysis (Financial Performance Series). 2nd ed. Icon Group International, 2000.

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Book chapters on the topic "Drypetes"

1

Khare, C. P. "Drypetes roxburghii (Wall.) Hurusawa." In Indian Medicinal Plants, 1. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-70638-2_538.

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Bussmann, Rainer W., Narel Y. Paniagua-Zambrana, and Grace N. Njoroge. "Drypetes gerrardii Hutch. Puntranjivaceae." In Ethnobotany of the Mountain Regions of Africa, 1–2. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-77086-4_69-1.

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Bussmann, Rainer W., Narel Y. Paniagua-Zambrana, and Grace N. Njoroge. "Drypetes gerrardii Hutch. Puntranjivaceae." In Ethnobotany of the Mountain Regions of Africa, 467–68. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-38386-2_69.

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Müller, Sabine. "Drypetis in Fact and (Fan)Fiction." In Orientalism and the Reception of Powerful Women from the Ancient World. Bloomsbury Academic, 2020. http://dx.doi.org/10.5040/9781350077416.ch-004.

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You might also be interested in the extended bibliographies on the topic 'Drypetes' for particular source types:
Journal articles
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