title: Nazarov reagents for convergent and expedient synthesis of new steroids.
abstract: [reaction: see text] A new methodology for the convergent synthesis of tetracyclic compounds was developed. Two new bicyclic Nazarov reagents of type II were synthesized, and their cycloaddition with 2-carbomethoxy-2-cyclohexenone I was studied. This cycloaddition afforded new interesting steroidal backbones.
authors.affiliation: Laboratoire de synthèse organique, Institut de pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada J1H 5N4.
authors.forename: Olivier
authors.initials: O
authors.lastname: Lepage
authors.forename: Charles
authors.initials: C
authors.lastname: Stone
authors.forename: Pierre
authors.initials: P
authors.lastname: Deslongchamps
mesh_terms: D001643:Bridged Bicyclo Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D003500:Cyclization; D003512:Cyclohexanones / Q000737:chemistry; D007202:Indicators and Reagents; D008968:Molecular Conformation; D013256:Steroids / Q000138:chemical synthesis*
chemical_list: D001643:Bridged Bicyclo Compounds; D003512:Cyclohexanones; D007202:Indicators and Reagents; D013256:Steroids