Solhy, Abderrahim; Smahi, Abdellatif; El Badaoui, Hanane; Elaabar, Brahim; Amoukal, Abderrahim; Tikad, Abdellatif; Sebti, Said; Macquarrie Tetrahedron Letters, 2003 , vol. 44, # 21 p. 4031 - 4033