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Related Experiment Videos

Nimbolide and isonimbolide.

G Anitha1, J Josepha Lourdu Raj, S Narasimhan

  • 1Asthagiri Herbal Research Foundation, 7/1, Thirumazhisai Street, Sundaram Colony, East Tambaram, Chennai, 600 059, Tamil Nadu, India. asthagiri@vsln.net

Journal of Asian Natural Products Research
|July 26, 2006
PubMed
Summary
This summary is machine-generated.

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Researchers explored cleaving nimbolide 1

Area of Science:

  • Organic chemistry
  • Natural product chemistry

Background:

  • Nimbolide 1 is a biologically significant molecule.
  • Azadirachtins exhibit potent antifeedant properties.

Purpose of the Study:

  • To cleave the ether linkage in nimbolide 1.
  • To generate a ring-opened structure similar to azadirachtins.

Main Methods:

  • Isolation of nimbolide 1.
  • Chemical reaction using boron trifluoride etherate and tetrabutyl ammonium bromide.
  • Spectroscopic analysis for structural determination.

Main Results:

  • Attempted ether linkage cleavage of nimbolide 1 did not yield the expected ring-opened product.
  • A novel rearranged product, isonimbolide 2, was formed.

Related Experiment Videos

  • Isonimbolide 2 was identified as a structural isomer of nimbolide 1.

    • Conclusions:

    • The reaction conditions led to an unexpected rearrangement rather than simple ether cleavage.
    • Isonimbolide 2 represents a new structural isomer of nimbolide.
    • Further investigation into the properties of isonimbolide 2 is warranted.