Tetrahedron Letters, , vol. 29, # 21 p. 2595 - 2598

Beddall, Nicola E.; Howes, Peter D.; Ramsay, Michael V. J.; Roberts, Stanley M.; Slawin, Alexandra M. Z.; et al. Tetrahedron Letters, 1988 ,  vol. 29,  # 21  p. 2595 - 2598