Results 41 to 50 of about 2,470 (216)

Formal Synthesis of the Akuammiline Alkaloid (±)‐Strictamine via a (4 + 2) Annulation Reaction With a Donor–Acceptor Cyclobutane

open access: yesHelvetica Chimica Acta, Volume 109, Issue 4, April 2026.
We report a concise formal synthesis of (±)‐strictamine via a silylium‐catalyzed (4 + 2) annulation of a donor–acceptor cyclobutane, achieved in 13 steps from tryptamine. ABSTRACT The akuammiline alkaloids are complex monoterpene indole natural products with a rigid cage‐like architecture and diverse biological activities.
Clément Tanguy   +2 more
wiley   +1 more source

Eco‐Friendly Practices for Cultivating Moringa oleifera to Restore Degraded Peatlands and Address Human Needs

open access: yesAdvances in Agriculture, Volume 2026, Issue 1, 2026.
Eco‐friendly agriculture is needed for degraded peatland rehabilitation purposes while also meeting community needs to reduce pressure on the land. The selection of plant species must meet the criteria for these two purposes. Moringa oleifera has been identified as capable of growing on marginal lands such as degraded peatland.
Hery Kurniawan   +14 more
wiley   +1 more source

BOTANI DAN BIOAKTIVITAS PULAI (Alstonia scholaris) [PDF]

open access: yes, 2019
Pulai or Alstonia scholaris (AS) is a species belonging Apocynaceae, which is used as medicine. The aim of thearticleto manifest the use and bioactivity of the AS.
Silalahi, M.Si, Dr. Marina   +1 more
core   +1 more source

Anticarcinogenic and antimutagenic activity of Alstonia scholaris on the albino mice bone marrow cells and peripheral human lymphocyte culture against methyl methane sulfonate induced genotoxicity

open access: yesAdvanced Biomedical Research, 2016
Background: The use of medicinal plants in modern medicine for the prevention and treatment of cancer is an important aspect. For this reason, it is important to identify antitumor promoting agents present in medicinal plants commonly used by the human ...
Md Sultan Ahmad   +3 more
doaj   +1 more source

Genetic Diversity of Landrace Rice Varieties in Lower Northern Thailand Using Chloroplast DNA Markers

open access: yesInternational Journal of Agronomy, Volume 2026, Issue 1, 2026.
In this study, the genetic diversity and evolutionary relationship among 65 Thai rice varieties were classified by the neighbor‐joining (NJ) analysis of DNA sequences, amplified by three cpDNA barcoding markers, namely, matK, rbcL, and trnH-psbA. Based on DNA sequencing analyses, all studied rice varieties were incorporated with 20 plant accessions by ...
Sittichai Urtgam   +8 more
wiley   +1 more source

Biologically active alkaloids from Alstonia angustiloba / Ku Wai Foong [PDF]

open access: yes, 2011
The alkaloidal content of Malaysian plant, Alstonia angustiloba Miq., was investigated and the results are summarized as below (Table). A total of 20 alkaloids were isolated and characterized, of which, three were new alkaloids, viz., angustilobine C (1),
Ku, Wai Foong
core  

Pharmacological, Phytochemical, and Toxicological Evaluation of the Ethanolic Extract of Alstonia boonei (Apocynaceae) Toward Antimalarial Phytodrug Development

open access: yesJournal of Chemistry, Volume 2026, Issue 1, 2026.
Despite ongoing efforts, malaria persists as a significant health challenge in developing countries. This study aims to investigate the antimalarial potential of Alstonia boonei stem bark, a traditional plant in Cameroon. The EtOH‐H2O (70:30) extract was subjected to phytochemical screening and chromatographic isolation of compounds.
Diane K. Nono   +12 more
wiley   +1 more source

An Ability of Endophytes from Blackboard Tree (Alstonia scholaris) in Increasing Chili Performance

open access: yes, 2018
Endophytes are a group of bacteria live in plant tissues, and have been numerously reported to promote plant growth. The aim of this study was to observe bacterial endophytes from blackboard tree (Alstonia scholaris) in inhibiting pathogenic fungal ...
Restya Ulfa, Erman Munir, Dwi Suryanto
core   +1 more source

Plants used in traditional medicine for treatment of malaria by Tetun ethnic people in West Timor Indonesia

open access: yesAsian Pacific Journal of Tropical Medicine, 2018
Objective: To document the medicinal plants used for the treatment of malaria by the Tetun ethnic people in West Timor–Indonesia. Methods: The ethnobotany and anthropology methods were used in the field surveys. Ninety four informants from 29 villages of
Maximus M Taek   +2 more
doaj   +1 more source

Synthesis of two novel C-19 analogues of (±)-alstoscholarisine A [PDF]

open access: yesJournal of the Serbian Chemical Society, 2019
Two new analogues of alstoscholarisine A, containing a phenyl or butyl substituent at the C-19 position, have been prepared in racemic form from the known skatole derivative.
Bihelović Filip   +2 more
doaj   +1 more source

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