Subtopic Deep Dive

Sesquiterpene Lactones Chemistry
Research Guide

What is Sesquiterpene Lactones Chemistry?

Sesquiterpene lactones chemistry studies the isolation, structural elucidation via NMR and MS, biosynthesis, and analog synthesis of these sesquiterpenoids from Asteraceae plants.

Over 5000 sesquiterpene lactone structures occur primarily in Asteraceae, with key examples from genera like Artemisia and Bidens pilosa (Ivănescu et al., 2015). Researchers use NMR and MS for structure determination and explore biosynthetic pathways involving germacrene A oxidase (Nguyen et al., 2010). More than 10 highly cited papers document their chemistry and biological roles.

Curated Papers

Key Challenges

Why It Matters

Sesquiterpene lactones provide novel scaffolds for anticancer drugs, as parthenolide targets leukemia stem cells (Guzmán et al., 2005, 672 citations). They offer treatments for cardiovascular disease and inflammation through dietary and pharmaceutical uses (Chadwick et al., 2013, 617 citations). Analogs like alantolactone combat glioblastoma via ROS generation (Khan et al., 2012). Applications extend to commercial successes like artemisinin derivatives (Moujir et al., 2020).

Key Research Challenges

Complex Structural Elucidation

Sesquiterpene lactones feature intricate stereochemistry requiring advanced NMR and MS techniques for accurate determination (Arigoni, 1975). Over 5000 structures demand precise methods to distinguish isomers (Ivănescu et al., 2015). Isolation from complex plant matrices complicates purity.

Biosynthetic Pathway Mapping

Enzymes like germacrene A oxidase drive lactone formation, but full pathways in Asteraceae remain incomplete (Nguyen et al., 2010). Few synthases account for diverse sesquiterpenes, as in Arabidopsis (Tholl et al., 2005). Evolutionary conservation poses identification challenges.

Analog Synthesis Optimization

Structure-activity studies require scalable synthesis of bioactive analogs like parthenolide (Guzmán et al., 2005). Maintaining stereochemistry during modification hinders drug development. Low yields from natural sources necessitate efficient routes.

Essential Papers

The sesquiterpene lactone parthenolide induces apoptosis of human acute myelogenous leukemia stem and progenitor cells

Mónica L. Guzmán, Randall M. Rossi, Lilliana Karnischky et al. · 2005 · Blood · 672 citations

Abstract Recent studies have described malignant stem cells as central to the initiation, growth, and potential relapse of acute and chronic myelogenous leukemia (AML and CML). Because of their imp...

Sesquiterpenoids Lactones: Benefits to Plants and People

Martin Chadwick, Harriet Trewin, Frances Gawthrop et al. · 2013 · International Journal of Molecular Sciences · 617 citations

Sesquiterpenoids, and specifically sesquiterpene lactones from Asteraceae, may play a highly significant role in human health, both as part of a balanced diet and as pharmaceutical agents, due to t...

Two sesquiterpene synthases are responsible for the complex mixture of sesquiterpenes emitted from Arabidopsis flowers

Dorothea Tholl, Feng Chen, Jana Petri et al. · 2005 · The Plant Journal · 360 citations

Summary Despite the fact that Arabidopsis is largely self‐pollinating, its flowers emit a complex mixture of terpene volatiles consisting predominantly of a large group of over 20 sesquiterpenes. H...

<i>Bidens pilosa</i>L. (Asteraceae): Botanical Properties, Traditional Uses, Phytochemistry, and Pharmacology

Arlene P. Bartolome, Irene M. Villaseñor, Wen‐Chin Yang · 2013 · Evidence-based Complementary and Alternative Medicine · 244 citations

There are 230 to 240 known Bidens species. Among them, Bidens pilosa is a representative perennial herb, globally distributed across temperate and tropical regions. B. pilosa has been traditionally...

Sesquiterpene Lactones from<i>Artemisia</i>Genus: Biological Activities and Methods of Analysis

Bianca Ivănescu, Anca Miron, Andreia Corciovă · 2015 · Journal of Analytical Methods in Chemistry · 196 citations

Sesquiterpene lactones are a large group of natural compounds, found primarily in plants of Asteraceae family, with over 5000 structures reported to date. Within this family, genus Artemisia is ver...

Stereochemical aspects of sesquiterpene biosynthesis

D. Arigoni · 1975 · Pure and Applied Chemistry · 154 citations

Abstract

Alantolactone induces apoptosis in glioblastoma cells via GSH depletion, ROS generation, and mitochondrial dysfunction

Muhammad Noman Khan, Fei Yi, Azhar Rasul et al. · 2012 · IUBMB Life · 144 citations

Abstract Glioblastoma multiforme (GBM) is the most malignant and aggressive primary brain tumor in adults. Despite concerted efforts to improve current therapies, the prognosis of glioblastoma rema...

Reading Guide

Foundational Papers

Start with Guzmán et al. (2005, 672 citations) for parthenolide bioactivity context; Chadwick et al. (2013, 617 citations) for Asteraceae lactone overview; Arigoni (1975) for stereochemistry basics.

Recent Advances

Study Ivănescu et al. (2015) for Artemisia methods; Moujir et al. (2020) for applications; Nguyen et al. (2010) for biosynthetic enzymes.

Core Methods

NMR/MS for structures (Ivănescu et al., 2015); germacrene synthases and oxidases (Tholl et al., 2005; Nguyen et al., 2010); analog synthesis for SAR (Khan et al., 2012).

How PapersFlow Helps You Research Sesquiterpene Lactones Chemistry

Discover & Search

Research Agent uses searchPapers and exaSearch to find NMR-based isolation papers, then citationGraph on Guzmán et al. (2005) reveals 672-cited apoptosis studies and analogs. findSimilarPapers expands to Artemisia lactones from Ivănescu et al. (2015).

Analyze & Verify

Analysis Agent applies readPaperContent to extract NMR spectra from Ivănescu et al. (2015), verifies biosynthesis claims in Nguyen et al. (2010) via verifyResponse (CoVe), and runs PythonAnalysis for statistical comparison of citation impacts or MS peak patterns with GRADE scoring for evidence strength.

Synthesize & Write

Synthesis Agent detects gaps in analog synthesis post-Chadwick et al. (2013), flags contradictions in biosynthetic enzyme roles, and uses exportMermaid for pathway diagrams. Writing Agent employs latexEditText for structure formulas, latexSyncCitations for 10+ papers, and latexCompile for review manuscripts.

Use Cases

"Analyze MS data from Bidens pilosa lactone isolation papers"

Research Agent → searchPapers → Analysis Agent → readPaperContent (Bartolome et al., 2013) → runPythonAnalysis (NumPy pandas parse peaks, matplotlib plot) → statistical verification output with p-values.

"Draft LaTeX review on parthenolide biosynthesis analogs"

Synthesis Agent → gap detection → Writing Agent → latexEditText (add structures) → latexSyncCitations (Guzmán 2005, Chadwick 2013) → latexCompile → PDF with diagrams.

"Find GitHub code for sesquiterpene NMR simulation"

Research Agent → paperExtractUrls (Nguyen 2010) → Code Discovery → paperFindGithubRepo → githubRepoInspect → biosynthetic model scripts for germacrene oxidase.

Automated Workflows

Deep Research workflow scans 50+ Asteraceae papers via searchPapers → citationGraph → structured report on lactone diversity (Chadwick et al., 2013). DeepScan applies 7-step CoVe analysis to verify NMR methods in Ivănescu et al. (2015) with GRADE checkpoints. Theorizer generates hypotheses on stereochemical evolution from Arigoni (1975) and Nguyen (2010).

Try Doxa for Sesquiterpene Lactones Chemistry Research

Frequently Asked Questions

What defines sesquiterpene lactones chemistry?

It covers isolation, NMR/MS structural elucidation, biosynthesis, and analog synthesis of these Asteraceae-derived sesquiterpenoids (Ivănescu et al., 2015).

What are key methods in this field?

NMR and MS determine structures; enzymatic assays map biosynthesis like germacrene A oxidase (Nguyen et al., 2010); organic synthesis creates analogs (Moujir et al., 2020).

What are major papers?

Guzmán et al. (2005, 672 citations) on parthenolide apoptosis; Chadwick et al. (2013, 617 citations) on benefits; Ivănescu et al. (2015) on Artemisia analysis.

What open problems exist?

Full biosynthetic pathways in Asteraceae; scalable stereoselective synthesis; structure-activity optimization for non-artemisinin drugs (Nguyen et al., 2010; Arigoni, 1975).