Sideroxylin and 8-demethylsideroxylin from Eucalyptus saligna (Myrtaceae)

Eucalyptus saligna Sm. (Family: Myrtaceae), commonly known as “Sidney blue gum”, is an Australasian plant widely distributed in the eastern part of New South Wales and the southeast of Queensland (USDA-ARS-GRIN database, 2000. National Germplasm Resources Laboratory, Beltsville, Maryland, USA, available on-line at: www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?16022.USDA-ARS-GRIN database, 2000). Leaves and fruits of this plant were collected from San Jose, Costa Rica during July 1992 by Polybiotica, SA, San Jose, Costa Rica, and supplied by Biotics Limited, University of Sussex, UK. A voucher specimen (1100-MP037) is kept at the herbarium of the Welsh Plant Breeding Station (WPBS at IGER).