Results 71 to 80 of about 31,846 (218)

Dolabelladienols A–C, New Diterpenes Isolated from Brazilian Brown Alga Dictyota pfaffii [PDF]

, 2014
[Abstract:]The marine brown alga Dictyota pfaffii from Atol das Rocas, in Northeast Brazil is a rich source of dolabellane diterpene, which has the potential to be used in future antiviral drugs by inhibiting reverse transcriptase (RT) of HIV-1 ...
Barcelos Oliveira, Ingrid de, Castellanos, Leonardo, Cirne-Santos, Claudio Cesar, Jiménez, Carlos, Palmer Paixão, Izabel Christina Nunes de, Pardo-Vargas, Alonso, Ramos, Freddy Alejandro, Resende, Jackson Antonio Lamounier Camargos, Rodríguez, Jaime, Stephens, Paulo Roberto Soares, Teixeira, Valeria Laneuville   +10 more
core   +3 more sources

Integrating mass spectrometry and systems biology for the modernization of natural medicines: From deciphering chemical complexity to holistic efficacy assessment

VIEW, EarlyView.
This review explores how mass spectrometry is transforming research in natural medicines, with Traditional Chinese medicine (TCM) as a primary exemplar. It details the application of advanced mass spectrometry in chemical analysis, the development of comprehensive quality control methods, and systematic research on the targeted mechanisms of single ...
Yudian Xu, Linlin Cao, Chenhuan Ding, Chen Wang, Yi Lai, Dan Ru, He Li, Wei Xu   +7 more
wiley   +1 more source

Is the endophyte‐based plant protection against aphids mediated by changes in the insect microbiome?

Insect Science, EarlyView.
We showed that the fungal endophyte Epichloë strain AR37 increased the plant resistance against aphids via the production of indole diterpene alkaloids. The reduction in aphid performance was not associated with changes in abundance/composition/diversity of the insect's bacterial microbiota, but additional endophyte effects on this microbiota cannot be
Daniel A. Bastías, Luis Carvalho, Ruy Jáuregui, Richard D. Johnson, Wei Zhang, Pedro E. Gundel   +5 more
wiley   +1 more source

A natural variation within duplicated AsWRKY49‐D2 drives the subgenomic functional divergence of homeologs in salt response of allohexaploid oats

Journal of Integrative Plant Biology, EarlyView.
Transcriptome analysis of oats under salt stress identified ten important salt‐responsive transcription factor families, which show extensive functional divergence among three oat subgenomes. Further integration with a genome‐wide association study under salt stress identified the AsWRKY49‐D2 gene, whose elite haplotype holds substantial potential for ...
Cailian Du, Yange Yun, Wenjia Li, Xiaolu Wu, Xingyu Liu, Minghao Li, Yingying Li, Shuhui Wang, Wei Li, Qiang He, Zhizhong Gong, Huilong Du, Qingbin Sun   +12 more
wiley   +1 more source

Mass Spectrometry Imaging Combined With Single‐Cell Transcriptional Profiling Reveals the Multidimensional Spatial Distributions and Biosynthetic Pathways of Medicinal Components in Andrographis paniculata

Plant Biotechnology Journal, EarlyView.
ABSTRACT The synthesis and accumulation of active ingredients in medicinal plants are distributed in specific organs, tissues, and cell types, which are important for the exploitation of medicinal plants. However, the fine distribution of active ingredients is difficult to know. Here, the system of mass spectrometry imaging (MSI) integrated with single‐
HaiSheng Zeng, MeiHui Shi, ZhiRong Chen, XueJing Sun, HuiJie Zhang, Yue Huang, YuCheng Chen, Jun Ren, HuiLing Huang, Almaz Borjigidai, Man Zhang, SuJuan Duan, Yi‐Jun Chen, Hong‐Lei Jin, Hong‐Bin Wang   +14 more
wiley   +1 more source

Two new cneorubin related diterpenes from the leaves of Guarea guidonia (Meliaceae)

Journal of the Brazilian Chemical Society, 2000
Two new and two known cneorubin related diterpenes were isolated from the leaves of Guarea guidonia (Meliaceae). One of the new diterpenes has the unusual trans bicyclo[5.1.0]octane ring system. The structures were elucidated by spectral data.
Brochini Claudia B., Roque Nidia F.
doaj  

Recent Advances in Grayanane Diterpenes: Isolation, Structural Diversity, and Bioactivities from Ericaceae Family (2018–2024)

Molecules
Diterpenes represent one of the most diverse and structurally complex families of natural products. Among the myriad of diterpenoids, grayanane diterpenes are particularly notable.
Sheng Liu, Lili Sun, Peng Zhang, Changshan Niu   +3 more
doaj   +1 more source

Chemistry and Biological Activities of Terpenoids from Copaiba (Copaifera spp.) Oleoresins

Molecules, 2012
Copaiba oleoresins are exuded from the trunks of trees of the Copaifera species (Leguminosae-Caesalpinoideae). This oleoresin is a solution of diterpenoids, especially, mono- and di-acids, solubilized by sesquiterpene hydrocarbons. The sesquiterpenes and
Jamilly Kelly Oliveira Neves, José Alexsandro da Silva, Paula Cristina Souza Barbosa, Fabiano de Sousa Vargas, Lidiam Maia Leandro, Valdir Florêncio da Veiga-Junior   +5 more
doaj   +1 more source

Resin Diterpenes from Austrocedrus chilensis [PDF]

Molecules, 2011
Seventeen diterpenes belonging to the labdane, abietane and isopimarane skeleton classes were isolated from the resin of the Chilean gymnosperm Austrocedrus chilensis and identified by spectroscopic and spectrometric methods. The diterpene 12-oxo-labda-8(17),13E-dien-19 oic acid is reported for the first time as a natural product and 14 diterpenes are ...
Verónica Rachel Olate, Olatz Goikoetxeaundia Usandizaga, Guillermo Schmeda-Hirschmann   +2 more
openaire   +5 more sources

Pushing the limits of concertedness. A waltz of wandering carbocations. [PDF]

, 2019
Among the array of complex terpene-forming carbocation cyclization/rearrangement reactions, the so-called "triple shift" reactions are among the most unexpected.
Castiñeira Reis, Marta, López, Carlos Silva, Nieto Faza, Olalla, Tantillo, Dean J   +3 more
core