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1. Chimgin from Ferula haussknechtii as AChE inhibitor and confirmation of the absolute configuration NSTL国家科技图书文献中心

Feyzi, Neda |  Ebadi, Ahmad... -  《Journal of Biomolecular Structure and Dynamics》 - 2025,43(5) - 2243~2252 - 共10页

摘要: absolute configuration of chimgin was determined to be 1S | -PDA). Furthermore, we determined the absolute |  configuration of chimgin through electronic circular dichroism | Alzheimer's disease (AD) is the most common |  cause of dementia worldwide and is classified as a
关键词: Natural product |  chimgin |  monoterpenoid |  Ferula haussknechti |  HPLC |  ECD |  DFT |  AChE

2. Synthesis, Chiroptical Properties, and Absolute Configuration Determination of Phenyl‐4‐pyridyl‐2,5‐dipyrimidinylmethane NSTL国家科技图书文献中心

Kouzou Matsumoto |  Rina Tanaka... -  《Asian Journal of Organic Chemistry》 - 2025,14(1) - n/a~n/a - 共7页

摘要: determined to be S configuration both by the CD calculation | Abstract Phenyl‐4‐pyridyl‐2,5 | ‐dipyrimidinylmethane (1) has been synthesized in five steps from 5 | ‐methylpyrimidine. The structural feature of 1 is the symmetry |  elements with respect to the 180° rotation of the aryl
关键词: Chirality |  Configuration determination |  Circular dichroism |  X-ray diffraction |  Tetraarylmethane

3. Sesquiterpenes from the aerial parts of Artemisia vachanica krasch. ex poljakov and their anti-inflammatory and anti-diabetic activities NSTL国家科技图书文献中心

Sukhrobov, Parviz |  Li, Jun... -  《Phytochemistry》 - 2025,230 - 共12页

摘要: absolute configurations were successfully determined by | Eleven undescribed sesquiterpenes, vachanins A | -K covering types of germacrane, eudesmane | , guaiacane, and cadinane, along with fifteen known analogs |  were isolated from the aerial parts of Artemisia
关键词: Artemisia vachanica |  Sesquiterpene |  Isolation and structural elucidation |  Absolute configuration |  Activity

4. Hyperwightianols A-H, monoterpenoid demethylated acylphloroglucinol derivatives from Hypericum wightianum NSTL国家科技图书文献中心

Fu, Chuan-Lu |  Ying, Ping... -  《Fitoterapia》 - 2025,182 - 共11页

摘要: experiments. Absolute configurations of the new compounds |  collectively employed to validate the configuration of the C | Twelve undescribed optically pure |  monoterpenoid demethylated acylphloroglucinol derivatives | , named hyperwightianols A-H (1-8), were isolated from
关键词: Hypericum wightianum |  Monoterpene demethylated acylphloroglucinol |  Absolute configuration |  2-methylbutyryl |  Anti-inflammatory activity

5. Large-amplitude vibrations of cantilevered pipe conveying fluid with arbitrary initial configuration in three-dimensional sense NSTL国家科技图书文献中心

Guo, Zilong |  Ni, Qiao... -  《Nonlinear dynamics》 - 2025,113(4) - 3079~3096 - 共18页

摘要: on absolute node coordinate formulation (ANCF) and |  configuration and stability analysis for a straight-curved |  configuration obtained by the three-dimensional ANCF is | Up to now, three-dimensional modeling for |  investigating the nonlinear dynamics of cantilevered pipes
关键词: Pipe conveying fluid |  Large-amplitude vibration |  Absolute node coordinate formulation |  Arbitrary initial configuration |  Static equilibrium configuration |  Critical flow velocity

6. Structural Elucidation and NMR Spectral Assignments of New Diphenyl Ether Derivatives From Liuweizhiji Gegen-Sangshen Oral Liquid NSTL国家科技图书文献中心

Cui, Jinghao |  Zhou, Xin... -  《Magnetic Resonance in Chemistry》 - 2025,63(2) - 151~154 - 共4页

摘要: absolute configuration of 1 was confirmed by ECD | Chemical investigation of the Liuweizhiji |  Gegen-Sangshen oral liquid afforded one new diphenyl |  ether derivative (1), together with one known compound |  (2). Their structures were established by 1D and 2D
关键词: diphenyl ether derivatives |  identification |  Liuweizhiji Gegen‐Sangshen oral liquid |  NMR spectra |  structural elucidation |  Liuweizhiji Gegen-Sangshen oral liquid

7. New thiohydantoin derivatives from the roots of Lepidium meyenii NSTL国家科技图书文献中心

Liu, Wen-Xin |  Li, Jun... -  《Phytochemistry Letters》 - 2025,67 - 共5页

摘要: analyses. The absolute configuration of compound 1 was | Three new thiohydantoin derivatives, namely | , (4R,6R)-6-hydroxyl macathiohydantoin C (1), (4 R,6S | )-6-hydroxyl macathiohydantoin C (2), and (4S,6S)-6 | -hydroxyl macathiohydantoin A (3), were isolated from the
关键词: Lepidium meyenii |  Thiohydantoin derivatives |  NMR chemical shift calculation |  DP4+

8. A new isocoumarin derivative from endophytic fungus Pezicula neosporulosa VDB39 from Vaccinium dunalianum NSTL国家科技图书文献中心

Shu, Yuan-Cao |  Zhang, Zhi-Yu... -  《Journal of Asian natural products research》 - 2025,27(1/2) - 267~273 - 共7页

摘要: X-ray crystallography confirmed the absolute |  configuration of compound 1. Additionally, the | Four isocoumarin derivatives (1-4) and five |  phenols (5-9) were obtained from the endophytic fungus |  Pezicula neosporulosa VDB39, which was isolated from the
关键词: Ericaceae |  Vaccinium dunalianum Wight |  Pezicula neosporulosa |  isocoumarin derivatives |  antiphytopathogenic fungi

9. Use of Aldehyde-Alkyne-Amine Couplings to Generate Medicinal Chemistry-Relevant Linkers NSTL国家科技图书文献中心

Mcgown, Andrew |  Vetma, Vesna... -  《ACS medicinal chemistry letters》 - 2025,16(2) - 278~284 - 共7页

摘要: absolute configuration of which was determined by | Copper catalyzed aldehyde-alkyne-amine (A3 | ) couplings lead to multifunctional, racemic, propargylic |  amines, many on a multigram scale. As part of an |  industrial collaboration, a selection of linkers was
关键词: PROTACs |  linkers |  chiral separation |  multicomponent reactions |  bromodomains

10. Catechin, taxifolin, and proanthocyanidin derivatives from Entada elephantina rhizome and their antimicrobial activity assessment NSTL国家科技图书文献中心

Zulfiqar, Fazila |  Pandey, Pankaj... -  《Fitoterapia》 - 2025,182 - 共8页

摘要: based on 1D- and 2D-NMR and HRESIMS data. The absolute |  configuration of isolates was determined via NOESY NMR | Twenty-two compounds, predominantly catechin | , taxifolin, and proanthocyanidin derivatives, were isolated |  and characterized from the methanol extract of
关键词: Entada elephantina |  Fabaceae |  Rhizome |  Catechin |  Taxifolin |  Proanthocyanidin
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