13-Oxyingenol is a diterpenoid isolated from Euphorbia kansui, and its derivatives have strong anti-HIV activity. We achieved the construction of inside-outside framework of 13-oxyingenol by using ring-closing olefin metathesis. (C) 2007 Elsevier Ltd. All rights reserved.
Synthetic Studies towards Optically Active 13-Oxyingenol via Asymmetric Cyclopropanation
seven-membered enone compound, the key intermediate of our previous synthesis of the inside-outside framework of 13-oxyingenol in racemic form, was achieved by using asymmetric cyclopropanation and reductive deoxygenation as key steps. 13-oxyingenol - asymmetric cyclopropanation - chiral aza-semicorrin ligand - reductive deoxygenation - intramolecular aldol reaction