Abstracts - Larissa C. Santos

Synthesis of sexual pheromones of the grape moth (Lobesia botrana)

Larissa C. Santos1*, Adeildo J. de Oliveira1, Maria R. F. de Lima1, Henrique F. Goulart2 e Antônio E. G. Santana2

1 Federal University of Alagoas, Institute of Chemistry and Biotechnology; adeildojro@gmail.com; mraquelf@gmail.com

2 Federal University of Alagoas, Center for Agrarian Sciences; fonsecagoulart@gmail.com; aegsal@gmaill.com

* Correspondence: larissacavalcante.s@hotmail.com

Over the years, the intense use of agrochemicals has had harmful effects on ecological balance and human health. This fact has stimulated studies of new methods to control pests. The use of synthetic sex pheromones for pest control has been prominent as they are safe tools for pest management, do not reach the environment, do not affect other organisms that are not the target of the pheromone and are not toxic [1].

Lobesia botrana (Lepidoptera: Tortricidae) is the main grapevine pest in Europe, but it is dispersing throughout the different wine countries [2]. This pest is responsible for major economic losses and recently arrived in Brazil, and is now a real problem for the Brazilian grape crop. We will discuss the synthesis of (7E, 9Z)-dodeca-7,9-dienyl acetate, (7E, 9Z)-dodeca-7,9-dien-1-ol and (7E, 9E)-dodeca-7,9-dienila, main components of the sexual pheromone of L. Botrana.

The synthetic route was performed in nine steps, with satisfactory yields and the products were confirmed by the techniques of Gas Chromatography Coupled to Mass Spectrometry (GC-MS), Nuclear Magnetic Resonance (NMR) and Infrared Spectroscopy (IR). The results obtained confirm the efficiency of the proposed route to obtain the desired sex pheromones.

1. LONDRES, F. Agrotóxicos no Brasil: um guia para ação em defesa da vida. Rio de Janeiro: AS-PTA , 2011.

2. BOTTON, M. et al.. Traça Europeia dos Cachos da Videira Lobesia botrana: uma Praga em Expansão nas Américas. Comunicado técnico, Embrapa, RS, 2014.