Pesticide Research Journal

SCOPUSWeb of Science
  • Year: 1992
  • Volume: 4
  • Issue: 2

Chemical and Spectral Studies on Nimbin Group of Neem (Azadirachta indica A. Juss) Constituents*

  • Author:
  • C. Devakumar, S.K. Mukerjee
  • Total Page Count: 8
  • DOI:
  • Page Number: 87 to 94

Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110 012, India

**Author for correspondence

This work constitutes a part of the Ph.D thesis of CD. Contribution No. 514 from Division of Agricultural Chemicals.

Abstract

Nimbin (1), 4-epinimbin (2) and 6-desacetylnimbin (3) were converted into nimbolide (6) and two novel pentanortriterpenoidal congeners viz. desacctylnitnbinene, (8) and nimbinene (9). The two dimensional 1H HOMCOR spectrum of 1, mass spectra of 2 and 4-epinimbic acid (5), 1H and 13C nmr spectral data of 6 and pyronimbic acid (7) are also presented.