Results 101 to 110 of about 21,898 (241)

Progress on Cassaine-Type Diterpenoid Ester Amines and Amides ( Alkaloids)

open access: yesNatural Product Communications, 2006
The structures, spectral characteristics, and bioactivities of 39 natural cassaine-type diterpenoid ester amines and amides (Erythrophleum alkaloids) and 31 synthetic analogues are reviewed.
Jing Qu   +5 more
doaj   +1 more source

Scuteparvin, a new neoclerodane diterpenoid from Scutellaria parvula.

open access: yes, 2004
The diterpenoid fraction occurring in the acetone extract of the aerial parts of Scutellaria parvula has been investigated. Only one neoclerodane diterpenoid, scuteparvin, was isolated and its structure elucidated as 4alpha,18-epoxy-6alphat-trans ...
BRUNO, Maurizio   +11 more
core   +1 more source

Unravelling the Intraspecific Variation in Drought Responses in Seedlings of European Black Pine (Pinus Nigra J.F. Arnold)

open access: yesPlant, Cell &Environment, Volume 49, Issue 12, Page 9694-9710, December 2026.
ABSTRACT Understanding intraspecific variation in drought tolerance is essential for predicting the adaptive capacity of forest species under climate change. Yet, the molecular basis of this variation remains poorly understood in ecologically and economically important conifers.
Muhammad Ahmad   +21 more
wiley   +1 more source

Leonurun, a Novel Labdane Diterpenoid from Leonotis leonurus [PDF]

open access: yes, 2015
A novel labdane diterpenoid, leonurun, has been isolated from the leaves of Leonotis leonurus. This structure was determined from spectroscopic data and the relative stereochemistry from single-crystal X-ray diffraction analysis.KEYWORDS: Labdane ...
McKenzie, JM, Green, IR, Mugabo, P
core  

13C Nuclear magnetic resonance spectroscopy in the elucidation of structures of diterpenoid alkaloids

open access: yes, 1987
13C Nuclear magnetic resonance spectroscopy is an exceptionally useful tool for the structure determination of diterpenoid alkaloids. A detailed study of the 1H and 13C nmr spectra of aconitine and 3-deoxyaconitine has permitted definite assignments to ...
Joshi, Balawant S.   +5 more
core   +1 more source

Total Synthesis of the Diterpenoid Alkaloid Arcutinidine Using a Strategy Inspired by Chemical Network Analysis [PDF]

open access: yes, 2019
Arcutinidine and other arcutinidine-type diterpenoid alkaloids feature an intricate polycyclic, bridged framework with unusual connectivity. A chemical network analysis approach to the arcutane skeleton enabled the identification of highly simplifying ...
Richmond, Sarpong   +6 more
core   +2 more sources

Biosynthetic Pathways and Regulation of Antibacterial Compounds From Endophytic Fungi: From Chemistry to Genomics and Biotechnology

open access: yesChemistry &Biodiversity, Volume 23, Issue 11, November 2026.
Endophytic fungi encode abundant cryptic biosynthetic gene clusters that remain largely silent under conventional cultivation. This review highlights how genome mining, multi‐omics, and cluster activation strategies bridge the BGC‐to‐metabolite gap, enabling the discovery of structurally diverse antibacterial natural products with activity against ...
Farkhod Eshboev   +8 more
wiley   +1 more source

Diterpenoid alkaloids from Delphinium tongolense

open access: yes, 1997
The phytochemical investigation of Delphinium tongolense Franch. yielded two new diterpenoid alkaloids tongolenine C and tongolenine D.
Chen, YZ, Pan, X, Li, BG, He, L
core  

Meroterpenoids Produced by Fungi: Occurrence, Structural Diversity, and Biological Activity (An Update: February 2020 to December 2025)

open access: yesChemistry &Biodiversity, Volume 23, Issue 11, November 2026.
This review firstly summarizes the update of meroterpenoids from February 2020 to December 2025 by applying a new classification method based on twelve key non‐terpene precursors. ABSTRACT Meroterpenoids are a class of hybrid natural products, biosynthesized from terpenoid fragments and non‐terpenoid precursors, exhibiting a wide range of biological ...
Yuqian Tang   +6 more
wiley   +1 more source

Photodynamic and Cytotoxic Evaluation of Euphorbia anacampseros Methanolic Extract: Chemical Characterization, Molecular Docking, and Light‐Activated Anticancer Activity

open access: yesChemistry &Biodiversity, Volume 23, Issue 11, November 2026.
Methanolic extract of Euphorbia anacampseros is chemically characterized by HPLC–DAD and GC–MS analyses, and its photodynamic anticancer potential is evaluated against HT‐29, MCF‐7, and A549 cells under different light wavelengths. Molecular docking reveals favorable interactions between major phytochemicals and human porphobilinogen deaminase ...
Sercin Ozlem Caliskan   +5 more
wiley   +1 more source

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