Showing 21 - 40 results of 483 for search '"alkaloid"', query time: 0.06s Refine Results
  1. 21

    An Indole Alkaloid Extracted from Evodia rutaecarpa Inhibits Colonic Motility of Rats In Vitro by Guo-xiang Wang, Yan-li Xiang, Hong-gang Wang, Yang-de Miu, Guang Yu

    Published 2020-01-01
    “…Evodiamine (Evo) is an indole alkaloid extracted from the traditional Chinese medicinal herb Evodia rutaecarpa. …”
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    Total syntheses of the parvistemoline alkaloids enabled by stereocontrolled Ir/Pd-catalyzed allylic alkylation by Xiao Liang, Qian-Hui Ding, Jian-Ting Yang, Hua-Fei Yang, Yi Deng, Li Shi, Kun Wei, Yu-Rong Yang

    Published 2024-12-01
    “…Abstract The functionalized polycycle with densely contiguous tertiary stereocenters is a formidable challenge in synthesizing the parvistemoline family of Stemona alkaloids. We herein report their catalytic, asymmetric total syntheses in 13–14 steps from commercially available 2-(methoxycarbonyl)-pyrrole, featuring the development and deployment of an Ir/Pd-synergistically-catalyzed allylation of α-non-substituted keto esters with secondary aryl-substituted alcohols, stereodivergently accessible to four stereoisomers. …”
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  5. 25

    Vibrational Spectroscopic Study of the Cocrystal Products Formed by Cinchona Alkaloids with 5-Nitrobarbituric Acid by Harry G. Brittain

    Published 2015-01-01
    “…For the nitrobarbiturate cocrystals with cinchonine, cinchonidine, and quinidine, the predominant interaction was with the quinoline ring system of the alkaloid. However, for quinine, the predominant interaction was with the quinuclidine group of the alkaloid. …”
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    Cryptolepine, the Main Alkaloid of the Antimalarial Cryptolepis sanguinolenta (Lindl.) Schlechter, Induces Malformations in Zebrafish Embryos by Kwesi Boadu Mensah, Charles Benneh, Arnold Donkor Forkuo, Charles Ansah

    Published 2019-01-01
    “…Previous studies on cryptolepine, the antimalarial and cytotoxic alkaloid of Cryptolepis sanguinolenta, showed that it preferentially accumulates in rapidly proliferating cells and melanin-containing tissues. …”
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  8. 28

    Alkaloid Profile, Anticholinesterase and Antioxidant Activities, and Sexual Propagation in <i>Hieronymiella peruviana</i> (Amaryllidaceae) by Olimpia Llalla-Cordova, Javier E. Ortiz, Luciana R. Tallini, Laura Torras-Claveria, Jaume Bastida, Lorena Celina Luna, Gabriela E. Feresin

    Published 2025-01-01
    “…This work examines the alkaloidal profile using GC-MS and UPLC-MS/MS of alkaloid-enriched extracts obtained from the leaves and bulbs of <i>H. peruviana</i> and their inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzymes. …”
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    Mechanism of melanoma suppression by Prosopis juliflora derived alkaloids: Apoptosis induction and signaling pathway inhibition by Jasoda Choudhari, Snehal K. Nimal, Shridhar Chougule, Trupti Shinde, N.R. Dhatrak, Gopal C. Kundu, Rajesh N. Gacche

    Published 2025-02-01
    “…In this context, we identified alkaloid fractions derived from PJLME (PJLME-AF) as key agents in PJLME's cytotoxic effect against melanoma cells. …”
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  12. 32

    Stability of Alkaloids during Drying Process and Their Effect on Anticoagulating Activity of Uncariae Ramulus Cum Uncis by Lu Zou, Fengyu Lu, Bing Lin, Ying Zhou, Tingting Liu, Yue Sun

    Published 2019-01-01
    “…It was observed that the alkaloids content of URCU firstly showed a tendency of increasing and then decreasing after reaching the peak at the 570th minute in the process of constant temperature drying. …”
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    β-Carboline Alkaloids and Essential Tremor: Exploring the Environmental Determinants of One of the Most Prevalent Neurological Diseases by Elan D. Louis, Wei Zheng

    Published 2010-01-01
    “…Harmane (1-methyl-9H-pyrido[3,4-β]indole) is a potent, tremor-producing β-carboline alkaloid, and emerging literature has provided initial links between this neurotoxin and ET. …”
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    An In Silico Study of the Interactions of Alkaloids from Cryptolepis sanguinolenta with Plasmodium falciparum Dihydrofolate Reductase and Dihydroorotate Dehydrogenase by Lois Kwane Kyei, Edward Ntim Gasu, Gilbert Boadu Ampomah, Jehoshaphat Oppong Mensah, Lawrence Sheringham Borquaye

    Published 2022-01-01
    “…Therefore, molecular docking and molecular dynamics simulations were used to investigate the interactions and stability of the alkaloids with PfDHFR and PfDHODH. Based on physicochemical characteristics, alkaloids were grouped as sterically bulky (sb) or planar (pg). …”
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    Effects of typical plant growth regulator chlormequat chloride on alkaloidal compounds in Corydalis yanhusuo and molecular mechanisms by Zixuan Du, Jiayin Cao, Jie Meng, Heng Zhou, Qing Hu, Ling Li, Yun Liao, Shui Miao, Wenting Li, Shen Ji, Tongshuai Wang

    Published 2025-01-01
    “…Transcriptomic analysis also facilitates the identification of differential genes and enzymes associated with alkaloid production between the two groups. Chlormequat chloride significantly increased the yield of C. yanhusuo, but the content of the quantitatively abundant alkaloids decreased. …”
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    First report of fatty acid-derived alkaloids produced by species of the ladybird genus Scymnus (Coccinellidae: Coleoptera) by Magro, Alexandra, Ramon-Portugal, Felipe, Touboul, David, Borges, Isabel, Hemptinne, Jean-Louis

    Published 2023-06-01
    “…The results of the GC-MS analyses suggest that Scymnus spp. produce azamacrolides, which are fatty acid-derived alkaloids.…”
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