Results 191 to 200 of about 6,589 (239)

Samara length–weight relationships in the endangered Cedro (Cedrela montana Moritz ex Turcz)

Biodiversity, 2023
Cedrela montana Moritz ex Turcz, a ‘nearly threatened’ tree species in Colombia, produces a samara (fruit) that has not been classified in the literature.
F. Ramírez
semanticscholar   +1 more source

Limonoids from Cedrela sinensis

Phytochemistry, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kumiko, Mitsui, Masato, Maejima, Haruhiko, Fukaya, Yukio, Hitotsuyanagi, Koichi, Takeya   +4 more
openaire   +2 more sources

Oleanane Triterpenoids from Cedrela montana (Meliaceae) [PDF]

Zeitschrift Fur Naturforschung - Section C Journal of Biosciences, 2002
Two new oleanane-type triterpenes, characterized as 3-oxo-11α,12α-epoxy-oleanan-28,13β- olide and 3-oxo-olean-11-en-28,13β-olide , were isolated from the fruits and seeds of Cedrela montana (Meliaceae). In addition, the known compounds oleanonic acid , a mixture of β-sitosterol and stigmasterol, and the limonoid photogedunin were also isolated.
Leonardo Castellanos, José S Calderon
exaly   +3 more sources

Annual Chronology and Climate Signals in Swietenia macrophylla and Cedrela odorata (Meliaceae) in the Maya Lowlands

Paleoceanography and Paleoclimatology
Despite efforts over recent decades, a gap persists in the global network of tree‐ring chronologies in the tropical Americas and especially for low‐elevation sites.
Isabel González‐Méndez, K. Anchukaitis, C. Pearson, Diego Pons, D. Frank, Julie Edwards, Erwin Luna, W. Pérez   +7 more
semanticscholar   +1 more source

Breeding Strategy for the Cedrela Genus in Argentina

2020
Three species from the Yungas (Cedrela balansae, C. angustifolia, C. saltensis) and one from the Alto Parana Rainforest (C. fissilis) represent the genus in Argentina. In this chapter, we present the state-of-the-art in their domestication, including afforestation experiences in block and in enrichment strips.
Grignola, Josefina, Balducci, Ezequiel Diego, Trápani, Adrián Ignacio, Saravia, Pablo Federico, Feyling, Mario H., Gatto, Miguel, Cuello, Roberto, Pérez, Gonzalo, Ríos de González, Liliana, Ruiz, Verónica Eugenia, Meloni, Diego Ariel, Saez, Julio Víctor, Pastorino, Mario Juan   +12 more
openaire   +2 more sources

Triterpenes from Cedrela odorata

Phytochemistry, 1991
Abstract From the ethanolic extract of the heartwood of Cedrela odorata were isolated gedunin, 3β- O -β- d -glucopyranosyl-24-methyllenecholesterol, oleanonic acid, sitosterol, n -octacosanol and a new triterpene threo -23,24,25-trihydroxytirucall-7-en-3-one. Structural determinations of these compounds were made by spectrometric data.
Angela M. Campos, Francisco S. Oliveira, Maria Iracema L. Machado, Francisco J.A. Matos, Raimundo Braz-Filho   +4 more
openaire   +1 more source

Chemical investigation of Cedrela toona

Phytochemistry, 1971
Abstract Two varieties of Cedrela toona Roxb. are available in West Bengal and the seeds of one variety produces cedrelone, 1,2-dihydrocedrelone, bergapten and β-sitosterol. Occurrence of 1,2-dihydrocedrelone, a new tetranortriterpenoid, provides further interesting evidence of the chemotaxonomic feature of Meliaceae .
A. Chatterjee, T. Chakrabortty, S. Chandrasekharan   +2 more
openaire   +1 more source

Triterpenoids from Cedrela sinensis

Tetrahedron, 2005
Abstract Twenty-three new triterpenoids ( 1–23 ), all having an apotirucallane skeleton, were isolated from the seeds, leaves, and stems of Cedrela sinensis (Meliaceae). Their structures were determined by 2D NMR experiments, X-ray crystallographic analysis, and chemical methods.
Kumiko Mitsui, Masato Maejima, Hiroaki Saito, Haruhiko Fukaya, Yukio Hitotsuyanagi, Koichi Takeya   +5 more
openaire   +1 more source

Tetranortriterpenoids from Cedrela fissilis

Phytochemistry, 1971
Abstract The co-occurrence of mexicanolide and 3-β-hydroxy-isomexicanolide in the seeds of Cedrela fissilis Velloso is recorded.
R. Zelnik, C. Rosito
openaire   +1 more source

Production of wood-plastic composites using cedrela odorata sawdust waste and recycled thermoplastics mixture from post-consumer products - A sustainable approach for cleaner production in Cuba

, 2020
This research aims to evaluate the application of technological efficiency to industrial waste, in the production of wood plastic composite. The raw materials used were sawdust from Cedrela odorata L., thermoplastic polyethylene terephthalate, high ...
Yonny Martínez López, J. Paes, Donatian Gustave, F. G. Gonçalves, Fermín Correa Méndez, Anna Clara Theodoro Nantet   +5 more
semanticscholar   +1 more source