@article{article4a3cff8e,
title   = {Core structure of eremophilanes and bakkanes through niobium catalyzed diels-alder reaction: synthesis of (+ OU -)-bakkenolide A},
author = {Constantino, Maurício Gomes and Oliveira, Kleber T. de and Polo, Ellen C. and Silva, Gil Valdo José da and Brocksom, Timothy J.},
year = {2006},
journal   = {Journal of Organic Chemistry}
}