Zobrazeno 1 - 10
of 22 154
pro vyhledávání: '"Two-dimensional nuclear magnetic resonance spectroscopy"'
Publikováno v:
Petroleum Science. 19:1007-1018
The behavior of oil and water in tight rocks can change the distribution of oil or water in pores, so that affect the production of crude oil. Nuclear Magnetic Resonance (NMR) method is an effective and non-destructive tool for evaluating rocks with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a0d29486d50433db674bd34f325e479
https://doi.org/10.1016/j.petsci.2021.10.011
https://doi.org/10.1016/j.petsci.2021.10.011
Publikováno v:
Phytochemistry Letters. 47:76-80
Two new azaphilones, penicilazaphilones F (1) and G (2) together with two known analogs (3 and 4), were isolated from fermentation cultures of the marine-derived fungus Penicillium sclerotiorum E23Y-1A. Their structures were elucidated based on spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b2284ccd504f0c4221c675d2ead3f19
https://doi.org/10.1016/j.phytol.2021.11.006
https://doi.org/10.1016/j.phytol.2021.11.006
Publikováno v:
Phytochemistry Letters. 47:63-66
Three new germacrane-type sesquiterpene lactones, koanolides B–D (1-3) have been isolated from the aerial parts of Koanophyllon gibbosum (Asteraceae), along with the previously reported sesquiterpene lactone koanolide A and the flavonoid eupatorin.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0f283befc152344f9df0f0a6791eb88
https://doi.org/10.1016/j.phytol.2021.11.009
https://doi.org/10.1016/j.phytol.2021.11.009
Autor:
Pierre Mkounga, Jean-François Gallard, Véronique Fontaine, Zhiyu Zhou, Karine Leblanc, Jérôme Vanheuverzwijn, Pierre Le Pogam, Somia Rharrabti, Augustin Ephrem Nkengfack, Mehdi A. Beniddir, Franck Meyer, Alain Meli Lannang, Erwan Poupon, Hugues Fouotsa
Publikováno v:
Organic & Biomolecular Chemistry
Organic & Biomolecular Chemistry, 2021, 20 (1), pp.98-105. ⟨10.1039/d1ob01791h⟩
Organic & Biomolecular Chemistry, 2021, 20 (1), pp.98-105. ⟨10.1039/d1ob01791h⟩
A new vobasine–tryptamine-based monoterpene indole alkaloid pseudodimer was isolated from the stem bark of Voacanga africana. As a minor constituent occurring in a thoroughly investigated plant, this molecule was targeted based on a molecular netwo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c645d32a33526c87ab72a8dd63f838f7
https://doi.org/10.1039/d1ob01791h
https://doi.org/10.1039/d1ob01791h
Publikováno v:
Phytochemistry Letters. 46:90-94
Three new phenolic glycosides were isolated from the methanol extract of fresh roots of Molineria latifolia, including 1) molineriosides A (3: 5-hydroxy-2-[β-fructopyranosyl-(2→6)-β-glucopyranosyl]-benzyl-2',6'-dimethoxybenzoate); 2) molineriosid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52ed118317ebc6b4ba772babed666fe1
https://doi.org/10.1016/j.phytol.2021.09.014
https://doi.org/10.1016/j.phytol.2021.09.014
Publikováno v:
International Journal of Biological Macromolecules. 193:2281-2289
The present study investigated the structural characteristics and its protective effect against H2O2-induced injury fibroblast cells of Bletilla striata tuber polysaccharide. The polysaccharides were gently extracted by water and recovered using the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baae8051255743f43f366519370fc855
https://doi.org/10.1016/j.ijbiomac.2021.11.060
https://doi.org/10.1016/j.ijbiomac.2021.11.060
Autor:
Hao Wang, Sheng-Zhuo Huang, Rui-Jun Duan, Wen-Li Mei, Hao-Fu Dai, Hong-Ling Ran, Cui-Juan Gai, Li Yang, Ya-Li Guan, Miao Yu
Publikováno v:
Phytochemistry Letters. 46:100-104
Three new aromadendrane-type sesquiterpenoids (1–3) and five known compounds (4–8) were isolated from the stems of Strophanthus divaricatus. Their structures were determined by spectroscopic methods including HR-ESI-MS, 1D and 2D NMR. The absolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4571701d7f26c56febf082a6f6a9fb78
https://doi.org/10.1016/j.phytol.2021.09.010
https://doi.org/10.1016/j.phytol.2021.09.010
Publikováno v:
The Journal of Antibiotics. 75:86-91
A new pluramycin-class polyketide, rausuquinone (1), and its known congener hydramycin (2) were isolated from the culture extract of the deep-sea water-derived Rhodococcus sp. RD015140. Compound 1 possesses a γ-pyrone-fused anthraquinone core with a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71d5986b009f5b6486d37fb07f1706fc
https://doi.org/10.1038/s41429-021-00489-0
https://doi.org/10.1038/s41429-021-00489-0
Publikováno v:
Magnetic Resonance in Chemistry. 60:275-358
Cedrela genus, a member of the Meliaceae family, presents both chemical characteristics associated with and those that distinguish it from the rest of its members. The presence of triterpenes and limonoids is the characteristic of the Meliaceae famil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::256d87961511802dac0c5ff76f29c319
https://doi.org/10.1002/mrc.5229
https://doi.org/10.1002/mrc.5229
Publikováno v:
Journal of Asian Natural Products Research. 25:497-502
(-)-5-Methylmellein (1) and its new dimer (2) were isolated from cultures of the basidiomycete Inonotus sinensis. Their structures were elucidated on the basis of extensive spectroscopic methods including UV, IR, HR-EI-MS, 1D NMR and 2D NMR. The stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c2ea5820d35d1f5a4a2fac1c4ed337e
https://doi.org/10.1080/10286020.2021.2004129
https://doi.org/10.1080/10286020.2021.2004129