All Stories

  1. A Novel Liquid Chromatography Tandem Mass Spectrometry Technique using Multi-Period-Multi-Experiment of MRM-EPI-MRM3 with Library Matching for Simultaneous Determination of Amphetamine Type Stimulants Related Drugs in Whole Blood, Urine and Dried Blood...

    Article • Journal of Analytical Toxicology, May 2019, Oxford University Press (OUP)

    Yeun-Mun Choo

  2. Detection of Five Mycotoxins in Different Food Matrices in the Malaysian Market by Using Validated Liquid Chromatography Electrospray Ionization Triple Quadrupole Mass Spectrometry

    Article • Toxins, March 2019, MDPI AG

    Yeun-Mun Choo, Doctor Ali Mohamed Ali Alsharif

  3. Determination of Mycotoxins Using Hollow Fiber Dispersive Liquid–Liquid–Microextraction (HF-DLLME) Prior to High-Performance Liquid Chromatography – Tandem Mass Spectrometry (HPLC - MS/MS)

    Article • Analytical Letters, March 2019, Taylor & Francis

    Doctor Ali Mohamed Ali Alsharif, Yeun-Mun Choo

  4. High-throughput flow injection analysis-MRM3 (FIA-MRM3) spectrometry for alternative fast screening of the isomeric methamphetamine and phentermine in blood for forensic toxicology cases in Malaysia

    Article • Toxicology Research and Application, January 2019, SAGE Publications

    Yeun-Mun Choo

  5. A new oxathiolane from Enterobacter cloacae

    Article • Natural Product Research, November 2014, Taylor & Francis

    Yeun-Mun Choo

  6. A Coumarin-Based Fluorescent Probe as a Central Nervous System Disease Biomarker

    Article • Sensors, November 2014, MDPI AG

    Yeun-Mun Choo

  7. N-acyl Homoserine Lactone-Producing Pseudomonas putida Strain T2-2 from Human Tongue Surface

    Article • Sensors, September 2013, MDPI AG

    Yeun-Mun Choo

  8. Terminal Spin Labeling of a High-mannose-type Oligosaccharide for Quantitative NMR Analysis of Its Dynamic Conformation

    Article • Chemistry Letters, May 2013, The Chemical Society of Japan

    Yeun-Mun Choo

  9. Is chronic levodopa therapy associated with distal symmetric polyneuropathy in Parkinson's disease?

    Article • Parkinsonism & Related Disorders, March 2013, Elsevier

    Yeun-Mun Choo

  10. Phytochemical Studies of Malaysian Crotalaria Mucronata

    Article • The Open Conference Proceedings Journal, March 2013, Bentham Science Publishers

    Yeun-Mun Choo

  11. Characterization of Quorum Sensing and Quorum Quenching Soil Bacteria Isolated from Malaysian Tropical Montane Forest

    Article • Sensors, April 2012, MDPI AG

    Dr Chong Lek Koh, Yeun-Mun Choo

  12. Coexistence of quorum-quenching and quorum-sensing in tropical marine Pseudomonas aeruginosa strain MW3A

    Article • World Journal of Microbiology and Biotechnology, July 2011, Springer Science + Business Media

    Dr Chong Lek Koh, Yeun-Mun Choo

  13. Grandilodines A−C, Biologically Active Indole Alkaloids fromKopsia grandifolia

    Article • Journal of Natural Products, May 2011, American Chemical Society (ACS)

    Yeun-Mun Choo

  14. Strychnan and Secoangustilobine A Type Alkaloids fromAlstonia spatulata.Revision of the C-20 Configuration of Scholaricine

    Article • Journal of Natural Products, November 2010, American Chemical Society (ACS)

    Yeun-Mun Choo

  15. Unusual indole alkaloid–pyrrole, –pyrone, and –carbamic acid adducts from Alstonia angustifolia

    Article • Tetrahedron, September 2010, Elsevier

    Yeun-Mun Choo

  16. Structure, biological activity, and a biomimetic partial synthesis of the lirofolines, novel pentacylic indole alkaloids from Tabernaemontana

    Article • Tetrahedron Letters, January 2010, Elsevier

    Yeun-Mun Choo

  17. Structure−Activity Relationship and Mechanism of Action Studies of Manzamine Analogues for the Control of Neuroinflammation and Cerebral Infections

    Article • Journal of Medicinal Chemistry, December 2009, American Chemical Society (ACS)

    Professor Robert J Doerksen, Yeun-Mun Choo

  18. ChemInform Abstract: Bisindole Alkaloids

    Article • ChemInform, April 2009, Wiley

    Yeun-Mun Choo

  19. ChemInform Abstract: The Alkaloids of the Mersinine Group: A New Subclass of the Monoterpenoid Indole Alkaloids from Kopsia.

    Article • ChemInform, September 2008, Wiley

    Yeun-Mun Choo

  20. The alkaloids of the mersinine group: a new subclass of the monoterpenoid indole alkaloids from Kopsia

    Article • Tetrahedron, February 2008, Elsevier

    Yeun-Mun Choo

  21. Chapter 4 Bisindole Alkaloids

    Article • January 2006, Elsevier

    Yeun-Mun Choo

  22. Venalstonine and Dioxokopsan Derivatives from Kopsia fruticosa.

    Article • ChemInform, December 2004, Wiley

    Yeun-Mun Choo

  23. Mersicarpine, an Unusual Tetracyclic Dihydroindole Alkaloid Incorporating a Seven-Membered Imine Ring.

    Article • ChemInform, November 2004, Wiley

    Yeun-Mun Choo

  24. Kopsifolines A-F: A New Structural Class of Monoterpenoid Indole Alkaloids from Kopsia.

    Article • ChemInform, August 2004, Wiley

    Yeun-Mun Choo

  25. Unusual Spirocyclic Macroline Alkaloids, Nitrogenous Derivatives, and a Cytotoxic Bisindole from Alstonia.

    Article • ChemInform, August 2004, Wiley

    Yeun-Mun Choo

  26. Angustilodine, an Unusual Pentacyclic Indole Alkaloid from Alstonia.

    Article • ChemInform, July 2004, Wiley

    Yeun-Mun Choo

  27. Mersicarpine, an unusual tetracyclic dihydroindole alkaloid incorporating a seven-membered imine ring

    Article • Tetrahedron Letters, July 2004, Elsevier

    Yeun-Mun Choo

  28. Venalstonine and dioxokopsan derivatives from Kopsia fruticosa

    Article • Phytochemistry, July 2004, Elsevier

    Yeun-Mun Choo

  29. Biologically Active Ibogan and Vallesamine Derivatives fromTabernaemontana divaricata

    Article • Chemistry & Biodiversity, April 2004, Wiley

    Yeun-Mun Choo

  30. Kopsifolines A–F: a New Structural Class of Monoterpenoid Indole Alkaloids fromKopsia

    Article • Helvetica Chimica Acta, April 2004, Wiley

    Yeun-Mun Choo

  31. New Indole Alkaloids fromAlstonia macrophylla

    Article • Journal of Natural Products, April 2004, American Chemical Society (ACS)

    Yeun-Mun Choo

  32. Unusual spirocyclic macroline alkaloids, nitrogenous derivatives, and a cytotoxic bisindole from Alstonia

    Article • Tetrahedron, April 2004, Elsevier

    Yeun-Mun Choo

  33. Alkaloids from Alstonia angustifolia

    Article • Phytochemistry, March 2004, Elsevier

    Yeun-Mun Choo

  34. Angustilodine, an Unusual Pentacyclic Indole Alkaloid fromAlstonia

    Article • Helvetica Chimica Acta, February 2004, Wiley

    Yeun-Mun Choo

  35. Macrodasine A, a novel macroline derivative incorporating fused spirocyclic tetrahydrofuran rings containing a spiroacetal moiety

    Article • Tetrahedron Letters, December 2003, Elsevier

    Yeun-Mun Choo

  36. Kopsifolines A, B, and C, indole alkaloids with a novel hexacyclic carbon skeleton from Kopsia

    Article • Tetrahedron Letters, February 2003, Elsevier

    Yeun-Mun Choo

  37. Novel Macroline Oxindoles from a Malayan Alstonia

    Article • Tetrahedron, August 2000, Elsevier

    Yeun-Mun Choo

  38. Indole and monoterpene alkaloids from the leaves of Kopsia dasyrachis

    Article • Phytochemistry, November 1999, Elsevier

    Yeun-Mun Choo

  39. Alkaloids from the stem-bark of Alstonia macrophylla

    Article • Phytochemistry, July 1999, Elsevier

    Yeun-Mun Choo

  40. Structure and biomimetic, electrochemically-mediated semisynthesis of the novel pentacyclic indole danuphylline

    Article • Tetrahedron, January 1999, Elsevier

    Yeun-Mun Choo

  41. Danuphylline, a novel pentacyclic indole from Kopsia

    Article • Tetrahedron Letters, August 1998, Elsevier

    Yeun-Mun Choo

  42. Manzamine Alkaloids

    Article • Wiley

    Yeun-Mun Choo