Results 21 to 30 of about 4,243 (215)

Rapid Analysis of Abietanes in Conifers [PDF]

Journal of Chemical Ecology, 2006
Diterpene resin acids are major constituents of conifer oleoresin and play important roles in tree defense against insects and microbial pathogens. The tricyclic C-20 carboxylic acids are generally classified into two groups, the abietanes and the pimaranes. The abietanes have conjugated double bonds and exhibit characteristic UV spectra.
P J, Kersten, B J, Kopper, K F, Raffa, B L, Illman   +3 more
openaire   +2 more sources

Untargeted Metabolomics by Using UHPLC–ESI–MS/MS of an Extract Obtained with Ethyl Lactate Green Solvent from Salvia rosmarinus

Separations, 2022
Salvia rosmarinus (Lamiaceae), previously known as Rosmarinus officinalis, is a plant cultivated worldwide, native to the Mediterranean region. Its leaves are traditionally used for cooking.
Grover Castañeta, Nicolas Cifuentes, Beatriz Sepulveda, Daniela Bárcenas-Pérez, José Cheel, Carlos Areche   +5 more
doaj   +1 more source

Unprecedented Elimination Reactions of Cyclic Aldols: A New Biosynthetic Pathway toward the Taiwaniaquinoid Skeleton

Molecules, 2023
The acid treatment of 6,7-seco-abietane dialdehydes gives, in high yield, the corresponding derivatives with the 4a-methyltetrahydrofluorene skeleton of taiwaniaquinoids.
Juan J. Guardia, Antonio Fernández, José Justicia, Houda Zentar, Ramón Alvarez-Manzaneda, Enrique Alvarez-Manzaneda, Rachid Chahboun   +6 more
doaj   +1 more source

Abietane and Ent-abietane Diterpenoids from the Leaves of Suregada Zanzibariensis

, 2022
NMR raw data (FIDs), processed mestrenova files and NMReDATA files for the isolated compounds.
Kalenga, Thobias M., Mollel, Jackson T., Said, Joianna, Orthaber, Andreas, Ward, Jas S., Atilaw, Yoseph, Umereweneza, Daniel, Ndoile, Monica M., Muinissi, Joan. J.E., Rissanen, Kari, Trybala, Edward, Bergström, Tomas, Nyandoro, Stephen S., Erdelyi, Mate   +13 more
openaire   +2 more sources

Antibacterial profiling of abietane-type diterpenoids [PDF]

Bioorganic & Medicinal Chemistry, 2017
Abietic and dehydroabietic acid are interesting diterpenes with a highly diverse repertoire of associated bioactivities. They have, among others, shown antibacterial and antifungal activity, potentially valuable in the struggle against the increasing antimicrobial resistance and imminent antibiotic shortage.
Andreas Helfenstein, Mikko Vahermo, Dorota A. Nawrot, Fatih Demirci, Gökalp İşcan, Sara Krogerus, Jari Yli-Kauhaluoma, Vânia M. Moreira, Päivi Tammela   +8 more
openaire   +3 more sources

Rubesanolides F and G: Two Novel Lactone-Type Norditerpenoids from Isodon rubescens

Molecules, 2021
A phytochemical investigation of the leaves of the medicinal plant Isodon rubescens led to the isolation of the two new degraded abietane lactone diterpenoids rubesanolides F (1) and G (2).
Kang He, Juan Zou, Yu-Xue Wang, Chen-Liang Zhao, Jiang-Hai Ye, Jing-Jie Zhang, Lu-Tai Pan, Hong-Jie Zhang   +7 more
doaj   +1 more source

Characterization of switchgrass (Panicum virgatum L.) PvKSL1 as a levopimaradiene/abietadiene-type diterpene synthase. [PDF]

Plant Biol (Stuttg)
This study reports the discovery and functional characterization of PvKSL1, a previously unrecognized class I diterpene synthase from switchgrass. Abstract The diverse class of plant diterpenoid metabolites serves important functions in mediating growth, chemical defence, and ecological adaptation. In major monocot crops, such as maize (Zea mays), rice
Wyatt G, Zerbe P, Tiedge K.
europepmc   +2 more sources

Contribution of microscopy for understanding the mechanism of action against trypanosomatids [PDF]

, 2018
Transmission electron microscopy (TEM) has proved to be a useful tool to study the ultrastructural alterations and the target organelles of new antitrypanosomatid drugs.
A Martinez-Palomo, A Montalvetti, A Rassi, AB Penissi, AE Eakin, AH Kolien, AJ Solari, AM Sánchez, Ana Yecê das Neves Pinto, C Brack, CF Silva Da, D Gonzalez-Pacanowska, DA Campbell, DA Johnston, DJ Hammond, DV Andrade, E Bontempi, E Lozano, E Lozano, E Lozano, EO Ogbadoiyi, ES Garcia, ES Lozano, F Dos Reis, FR Opperdoes, FR Opperdoes, FR Opperdoes, FS Laranja, H Meyer, H Meyer, J Aldunate, J Lukes, J McKerrow, J Mottram, JA Urbina, JA Urbina, JA Urbina, JA Urbina, JC Engel, JC Linder, JCP Dias, JCP Dias, JD Bergstrom, JD Maya, JF Turrens, JJ Marr, JL Avila, JL Avila, Juliano de Toledo, K Lazardi, K Miranda, K Miranda, KH Lee, L Simpson, LV Muschietti, M Meirelles, M Nieto, MC Elias, MCQB Elias, MR Ariyanayagam, MR Ariyanayagam, NM Sayed El, O Campetella, OS Giordano, OS Giordano, P Barrera, P Webster, PF Pimenta, R Docampo, S Sepúlveda-Boza, SD Brengio, SR Wilkinson, T Souto-Padron, T Souto-Padron, T Souto-Padron, T Souto-Padron, TA Shapiro, TS Tiuman, V Jimenez-Ortiz, V Sülsen, VP Sülsen, VP Sülsen, VV Costantino, W Souza De, W Souza De, W Souza De, W Souza De, W Souza De, W Souza De, Wanderley de Souza, WE Gutteridge   +90 more
core   +1 more source

Abietane and Rearranged Abietane Diterpenes from Salvia montbretii

Journal of Natural Products, 1996
From the roots of Salvia montbretii six new diterpenoids were isolated in addition to eleven known compounds. The new compounds were established as salvibretol (1), 1-oxosalvibretol (4), 6-hydroxysalvinolone (5), 7-hydroxytaxodione (6), 7,7‘-bistaxodione (7), and 11,11‘-didehydroxy-7,7‘-dihydroxytaxodione (8), using 1D and 2D NMR techniques.
Topcu, G, Ulubelen, A
openaire   +2 more sources

A New Abietane and Two Dimeric Abietane Diterpenes from the Black Heartwood of Cryptomeria japonica.

ChemInform, 2004
Three new diterpenes, sugikurojins A-C (1-3) were isolated from the black heartwood of Cryptomeria japonica. The structure of sugikurojin A was deduced to be 19-hydroxy-6,7-dehydroferruginol on the basis of extensive NMR experiments. Sugikurojin B was a dimer of 6,7-dihydroxyferruginol and 6,7-dehydroferruginol with a 6-O-11' linkage. Sugikurojin C was
Shigenobu, Arihara, Akemi, Umeyama, Shinya, Bando, Shinji, Imoto, Mikako, Ono, Mayo, Tani, Kazuko, Yoshikawa   +6 more
openaire   +5 more sources