Douglas, Christopher J.; Sklenicka, Heather M.; Shen, Hong C.; Mathias, David S.; Degen, Shane J.; Golding, Geoffrey M.; Morgan, Christopher D.; Shih, Regina A.; Mueller, Kristen L.; Seurer, Lisa M.; Johnson, Erik W.; Hsung, Richard P. Tetrahedron, 1999 , vol. 55, # 48 p. 13683 - 13696