Azulene Derivatives as Plant Growth Regulators

Abstract

AMONG the many hundreds of compounds examined for effects in promoting cell elongation, very few having activity do not have a ring structure possessing aromatic character1. Thus it is logical to look for activity in compounds having ‘non-classical’ aromatic rings such as derivatives of azulene and ferrocene. The azulene compounds are of particular significance since this ring system occurs frequently in essential oils and plant tissue, and anti-inflammatory, anti-allergic, bacteriostatic, cancerostatic and anti-arthritic activities have been claimed for azulenes2.

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MUIR, R., HANSCH, C. Azulene Derivatives as Plant Growth Regulators. Nature 190, 741–742 (1961). https://doi.org/10.1038/190741a0

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