Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Mori, K., M. Sasaki, S. Tamada, T. Suguru, and S. Masuda. 1979. Synthesis of optically active 2- ethyl-1,6- dioxaspiro(44)nonane (chalcogran), the principal aggregation pheromone of Pityogenes chalcographus (L) . Tetrahedron 35:1601-1605.