Abstract

In this short communication, we present the first Fourier Transform Infrared Absorbance (FT‐IR) study of peruphasmal; a defensive secretion from Peruphasma schultei. The spectral data collected are representative of the natural product structure proposed by Dossey et al. This study demonstrates the viability of FT‐IR as another tool in the physical and biological chemist′s repertoire for use in determining important structural characteristics from minute amounts of available sample.

Highlights

  • Individual organisms often produce natural product compounds in extremely minute amounts

  • Another physical technique that can be used to study the structures of natural products is Fourier Transform Infrared Spectroscopy (FT-IR) [5,6]

  • We report the infrared study of peruphasmal [2], an important constituent of the defensive secretion of Peruphasma schultei

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Summary

Introduction

Individual organisms often produce natural product compounds in extremely minute amounts. Dossey et al [2] were able to use this technology to study the defensive secretions from individual walkingstick insects (Order Phasmatodea). Another physical technique that can be used to study the structures of natural products is Fourier Transform Infrared Spectroscopy (FT-IR) [5,6]. Recent advances in infrared technology allow the study of extremely small amounts of natural products. In nature, these compounds are in equilibrium with their congruous diol [2] (see Fig. 1) To our knowledge, this is the first FT-IR study of peruphasmal. We were able to make spectral measurements using approximately only 140 μg of peruphasmal dissolved in 10 μl of deuterated chloroform (CDCl3); a distinct advantage over other physical methods of structural analysis which require significantly greater sample size

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